bluuebunny/crossref_metadata_2025 huggingface dataset:
Concerning the Application of Grass Brick House in Rural Construction - Make Shangdianzi Village in Jilin Province as an Example
Authors: Lv Fei , Cao Cong , Su Rui Fang
Published: February 2012

The grass brick house is made of the grass brick which is compressed by rice (Michael) straw and built to house. It has good heat preservation performance, low energy consumption and production building convenient, and it is harmless to the environment, protecting land and other characteristics. It meets the needs of using new building materials into the rural residential construction. To make this new type energy saving and emission reduction technology on grass brick building can improve, promote to the more rural, and provide the reference which can better service for new countryside construction on using building materials.
Morphology and Properties of ASA/PC Blends
Authors: Han Ye , Liu Jing , He Xing Jian , Zhou Chao
Published: February 2012

Acrylonitrile-styrene-acrylate copolymer/polycarbonate (ASA/PC) blends were prepared over a range of compositions via mixing PC, SAN, and ASA copolymer by melt blending. An analysis was made on the mechanical properties and morphology of the blends. When a small amount SAN was introduced to ASA/PC blends, the dispersion condition of ASA in the matrix was improved and a better integrated mechanical properties was realized. Further increasing the SAN content led to a decrease of impact strength, which was due to the changing of the morphology of the blends and the inherent brittleness of matrix. Introduction
A Study of Downhole Drillable Pulsing Cementing Device with Low Frequency Self-Excited Hydraulic Oscillation and its Field Application
Authors: Nie Cui Ping , Ye Deng Sheng
Published: February 2012

Abstract: Usually we pay more attention on how to improve gas well cementing quality in engineering design and field operations, and there are so many studies on cement agents but few researches on cement slurry injection technology. The field practice proved that conventional cementing technology can not ensure the cementing quality especially in gas well and some abnormal pressure wells. Most of the study is concentrated on cement agents and some cementing aspects such as wellbore condition, casing centralization etc. All the factors analysis on cementing quality has pointed out that a combination of good agents and suitable measurements can improve cementing quality effectively. The essential factor in cementing is to enhance the displacement efficiency, but normal hole condition and casing centralization are the fundamental for cementing only. Pulsing cementing is the technology that it can improve the displacement efficiency especially in reservoir well interval, also it can shorten the period from initial to ultimate setting time for cement slurry or improve thickening characteristics, and then to inhibit the potential gas or water channeling. Based on systematically research, aiming at improving in 7″ liner cementing, where there are multi gas reservoirs in long interval in SiChuan special gas field, well was completed with upper 7″ liner and down lower 5″ liner, poor cementing bonding before this time. So we stressed on the study of a downhole low frequency self-excited hydraulic oscillation pulsing cementing drillable device and its application, its successful field utilization proved that it is an innovative tool, and it can improve cementing quality obviously.
Braced Tube Structures for Complex-Shaped Tall Buildings
Authors: Moon Kyoung Sun
Published: February 2012

Braced tubes, which carry lateral loads by axial actions of the perimeter columns and bracings, are very efficient structural systems for tall buildings. This paper investigates structural efficiency of braced tube structures employed for complex-shaped tall buildings, such as twisted, tilted and tapered towers. For each complex form category, tall buildings are designed with braced tube systems, and their structural efficiency is studied in conjunction with building forms. In order to investigate the impacts of various important geometric configurations of complex-shaped tall buildings, parametric models are generated using appropriate computer programs, and the models are exported to structural engineering software for design and analyses. Based on the study results, structural efficiency of braced tubes for each complex form category is estimated.
Analysis on Ecological Technology and Environment Impact Evaluation of Rammed Earth Residence
Authors: Ma Jin Zhu , Du Shu Ting
Published: February 2012

Taking rammed earth residence of anji eco-house project in zhejiang province as an example, the ecological building technology used in its material selection, construction method, palisade structure practice, building design was analyzed, environmental impact of rammed earth residence was evaluated from two aspects of energy consumption and CO2 emission. It was found that energy consumption and annual CO2 emissions per area of rammed earth residence is far lower than that of common brick masonry structure residential, it shows the rammed earth residence has good ecological environmental protection performance and is worth to reference in other rural residential construction.
Review: The Effect Factors of Compatibility of Cement and Superplasticizer
Authors: Li Mao Hong , Zhao Ju Mei , Jin Hu , Li Guo Qing , Wang Yu Suo
Published: February 2012

For saving costs and improving the durability of concrete, the superplasticizer was often added into the modern concrete. Since the superplasticizer was used, many apprehensions have occured, e.g. slump loss, segregation of concrete, entraintment of air, etc. Namely, there is the compatibility problem of superplasticizer and cement. Many researchers have studied on these factors which have an effect on the compatibility of superplasticizer and cement. These factors include the physical and chemical property of cement, the property of superplasticizer and other factors. Various factors which have an impact on the compatibility of superplasticizer and cement were summarized in the paper.
The Amount Effect of Catalyst on the Urethane Reaction of 1,2-Propanediol in Xylene
Authors: Yang Peng Fei
Published: February 2012

The urethane reaction kinetics of 1,2-propanediol with phenyl isocyanate is monitored with in-situ FT-IR with xylene as solvent. Triethylamine is used as catalyst and its amount effect is investigated. Rate constants for the reaction with different concentrations of triethylamine are worked out. The urethane reaction has been found to be a second order reaction and the reaction is largely accelerated with the increase of catalyst concentration. Furthermore, when triethylamine is used as catalyst, the rate constants are different between initial stage and final stage, which belong to different hydroxyls in 1,2-propanediol. However, the rate constant is the same when there is no catalyst, which shows no reactivity difference for hydroxyls in 1,2-propanediol.
Effect of Corrosion on Mechanical Properties of Reinforcing Bar HPB235
Authors: Wang Ying , Wang Ying
Published: February 2012

The corrosion behavior of reinforcing bar HPB235 in simulated concrete pore solution (3.5 wt.% NaCl solution) was investigated, and the tensile mechanical properties before and after corrosion were tested. The results showed that, with corrosion time increasing from 240h to 720h, the corrosion rate increases and the corrosion becomes heavier. With the increase of corrosion time (corrosion rate), the yield strength and tensile strength decrease, but the elongation decreases at first and then increases.
Thermal Analysis of Multifunctional Satellite Structure-Battery
Authors: Wang Yang , Peng Chao Yi
Published: February 2012

To make the rapidly developing micro-satellite further smaller and lighter, based on gel polymer lithium-ion battery and high thermal conductivity carbon fiber reinforced epoxy resin composites and polymethacrylimide (PMI) foam, a kind of multifunctional satellite structure-battery (SB) is designed in the paper, and an investigation of its thermal property in certain working environments is carried out by numerical simulation approach. The role of two parameters, longitudinal thermal conductivity of carbon fibers and the heat dissipation area, play in the temperature distribution while the SB is working, is analyzed. The result shows that, enlarging the heat disspation area is an effective way to decrease the maximum temperature of SB and it also implys that by selecting the two parameters carefully, the largest temperature rising of the SB could be considerably lowered, alleviating the burden of satellite thermal control subsystem.
The Effects of Mineral Admixture on the Compressive Strength of Concrete
Authors: Zhao Mei Li
Published: February 2012

Mineral admixture was one or more industrial waste, or mixed with finely ground natural minerals, or grinded mixture.By replacing part of the cement with mineral admixtures , cement could be saved and improved the performance of concrete. In this paper，the compressive strength and slump of the concrete with mineral admixture were tested. The amount of cement replaced by mineral admixture in the concrete affected the compressive strength and the slump. According to the compressive strength and slump of the concrete, the optimum dosage of the mineral admixture was from 30% to 40%.
Influence Analysis of Crack Depth and Position on Asphalt Pavement Structure with 3D Finite Element
Authors: Wang Peng , Cui Can
Published: February 2012

In recent years the research on Surface-initiated longitudinal cracking along wheelpath (or Top-Down cracking) is become a fresh hotspot in the field of pavement damage focused by international asphalt pavement engineering.Because the traditional load is the vertical surface load with uniform tire pressure, this loading is applied at only one position and no effort is made to distinguish between tire pattern.The traditional method can’t explain the mechanism of the top-down cracking. In order to discuss the mechanism of TDC, this paper establish a 3D finite element model of semi-rigid pavement structure and use the large finite element software Abaqus. The analysis shows that, in the crack beginning stage, the main tensile stress appears under the center of the load on the sub-base of the pavement,and its value increases with the time. When cracks appear in the base, the position of the main tensile stress appears at the bottom of the surface layer, under the outside edge of wheel path. The value of the main shear stress increases at the stage of the cracks beginning, but the increase is small. The value of the main shear stress decreases when the cracks appear in the middle of the surface layer, and the position of the main shear stress changes with the depth of the cracks. With the increase of the cracks’ depth, the adverse influence of the shear stress becomes weaker and weaker.So the key of controlling the cracks in the surface layer is prevention. To prevent the development of the cracks, the tensile strength of the layer’s material should be enhanced in any way. The stress and its value resulted from the vehicle loaded on the structure layer is bigger than the other cases when the position of the cracks is at the edge of wheel path, and the stress is much bigger than the shear strength and the fracture toughness of the material of the layer. As the shear strength of the material is not enough, the vertical cracks are easier to appear at the edge of wheel path under the load of the vertical. Once it appearing, the cracks will extended into the layer because of the load of vertical. Eccentric load generates greater stress in the structure than the load loaded upright. In fact, though, non-channeling can reduce the appearance of the tracks, eccentric load enhance the development of the cracks in the surface because of the existence of the cracks in the surface layer.
The Deformation Analysis of Acrylic Waterproof Membrane under the Uniformly Distributed Loads
Authors: Zhao Ju Mei , Li Guo Qing , Li Mao Hong , Yang Qi Xin , Liu Dong Min
Published: February 2012

The energy method was used to analysis the deformation of acrylic waterproof membrane under the uniform load and to calculate the maximum central deflection according to the clamped circular plate. Because the shape of the deformation of waterproof membrane bulge was similar to semi-ellipsoid, the curve length corresponding to the maximum central deflection was calculated by elliptic equation. According to the curve length, the deformation could be calculated under the different water pressure and membrane thickness. Comparing the deformation with the maximum elongation ratio, the water pressure and the thickness of waterproof membrane which ensure the safety could be calculated in theory. If the water pressure was known, the thickness of spray-membrane could be determined in the tunnel engineering.
Stability Study of Chitosan-g-AM Inverse Emulsion
Authors: Ma Yong Sheng , Wang Lin Tong , Sun Xian Hui , Zhang Jiang Qiang
Published: February 2012

Graft copolymerization of chitosan and vinyl monomer (such as acryamide and acrylic acid) and application study of the copolymer used as papermaking additive were paid more and more attention in papermaking chemical industry. Chitosan and acrylamide(AM) monomer were graft copolymerizing in inverse emulsion. Several factors such as oil-water proportion, mass ratio of chitosan and AM, emulsifier types and ratio, and initiator concentration that affect the stability of inverse emulsion were elementarily studied. Stable latex can be gained when reaction condition was that the volume ratio of oil phase and water phase was 1:1, the weight ratio of chitosan and AM was 1:8, the initiator concentration was 0.8mmol/L, the dosage of emulsification agent was 8% of the oil phase weight and the weight ratio of 1227 and OP-10 was 1:1.
Dynamic Constitutive Model of Concrete
Authors: Yang Wei Wu , Liu Hai Feng , Ning Jian Guo
Published: February 2012

Based on the damage and Ottosen failure criterion, a dynamic constitutive model is proposed to investigate the mechanical behavior of concrete subjected to impact loading. The model predictions fit well with experimental results. So it can be used to simulate dynamic mechanical behavior of concrete
Effects of Solvent Polarity on the Urethane Reaction of 1,2-Propanediol
Authors: Yang Peng Fei
Published: February 2012

The urethane reaction kinetics of 1,2-propanediol with phenyl isocyanate are investigated in different solvents, such as xylene, toluene and dimethylformamide. In-situ FT-IR is used to monitor the reaction to work out rate constant. It showsthat the urethane reaction has been found to be a second order reaction, solvents largely affects reaction rates. The reaction is largely accelerated in polar solvents, following the order of dimethylformamide > toluene > xylene. Further more, when dimethylformamide is used as solvent, the rate constants are different between initial stage and final stage, which belongs to different hydroxyls in 1,2-propanediol. However, when toluene or xylene is used as solvent, the rate constant is the same. That is, there is no reactivity difference for hydroxyls in 1,2-propanediol.
Sound Insulation Provided by PET Fabric/PVC Composite Materials
Authors: Yao Yue Fei , Li Shan , Fu Ya Qin
Published: February 2012

Single layer PET Fabric/polyvinyl chloride (PVC) composite materials and double layers PET fabric/polyvinyl chloride (PVC) composite materials with super thin thickness, lightweight, flexible and high strength were manufactured by means of the infusion technology under normal pressure. The sound insulation performance of these novel materials was evaluated with a two-channel acoustic analyzer. The structure and mechanical properties were investigated by mechanical tests and SEM observation. The results show that for the small surface density the double layers composite has better sound insulation performance than that of the single one. But with increment of surface density, the difference between them becomes small, and for the surface density larger than 1.3kg/m2, the sound insulation performance becomes inverse on layers, i.e., the single layer composite has better sound insulation performance than that of double layers one. Therefore, difference structures of composites can be developed based on sound wave features.
̅̅Research on Calcination Condition of Alite-Rich Portland Cement Clinker with C2.75B1.25A3 S
Authors: Wang Shou De , Guo Xiang Yang , Lu Ling Chao
Published: February 2012

Calcination condition and mechanical performance of alite-rich Portland cement with barium calcium sulphoaluminate mineral(C2.75B1.25A3S ) were investigated by the orthogonal test method in which the influencing factors included sintering temperature, sintering time and cooling method. The composition, structure and performance of the clinker were analyzed by the means of X-ray diffraction, scanning electron microscopy-energy dispersive spectroscopy and metallographic microscope. The results show that C2.75B1.25A3S mineral and alite can coexist in one clinker system. The introduction of C2.75B1.25A3S mineral to clinker system is benefit to promote the formation of alite at lower temperature. The optimal sintering temperature, sintering time and cooling method are 1380°C, 60 min and two-stage cooling, respectively. Under these processing conditions, the compressive strength of alite-rich Portland cement with barium calcium sulphoaluminate reaches 43.4, 80.6 and 123.8 MPa at 3d, 7d and 28d curing ages, respectively, which shows excellent performance of mechanical strength.
Study on Preparation Process of SBS / Crumb Rubber Composite Modified Asphalt
Authors: Wang Yan , Zhan Bo Chuan , Cheng Jian
Published: February 2012

The incorporation of SBS into crumb rubber modified asphalt is investigated to enhance binder properties and storage stability in this paper. In order to gain the high quality of road pavement asphalt, the preparation process is optimized. The main objective of this study is to enhance the properties of crumb rubber modified asphalt through the addition of Styrene-Butadiene-Styrene (SBS) and analysis the effect of SBS type, preparation temperature and time exert on the properties of SBS /crumb rubber composite modified asphalt. The optimal preparation condition as follow: the swelling temperature for two mixed modifiers: 180 °C, swelling time: 1h; Shearing temperature: 180 °C, shearing time: 1h; Breeding temperature: 170 °C, breeding time: 3h. The results demonstrated that the properties of SBS/crumb rubber composite modified asphalt can meet the requirements of Grade C standard on SBS polymer modified asphalt.
Effects of Al2O3 on the Structure and Properties of Calcium-Magnesium-Silicate Glass Fiber
Authors: Liu Hao , Wang Xi Tang , Wang Zhou Fu , Zhang Bao Guo
Published: February 2012

Calcium-magnesium-silicate glass fiber is a kind of candidate materials for aluminosilicate ceramic fiber in high temperature resistant field. However, the large thermal shrinkage limits its rapid development and industrial application in high temperature insulation field. It has been known that the shrinkage under high temperatures is mainly affected by the structure and crystallization mechanisms of glass fibers. Thus, Al2O3 was chosen as additive in the chemical composition of glass fiber to investigate the glassy network structure, crystallization and dissolution properties of calcium-magnesium-silicate glass fiber by DTA, XRD and ICP-AES techniques. The results show that with the addition of Al2O3, the glassy network structure was strengthened and the precipitation of crystals was inhibited for heat-treated fibers. As for the dissolution properties in physiological fluids, though the weight losses, changes of pH values and leached ions concentration lowered slightly with the addition of Al2O3 for the intensified network structure, fibers still present high dissolution rates.
The Research on Flame Retardant Wind Turbines Nacelle Made through VARTM Process
Authors: Wang Zhi Tao , Luo Yong Kang , Ding Xing , Xi Guo Fang
Published: February 2012

During the process of Vacuum Assisted Resin Transfer Molding（VARTM）making flame retardant wind turbines nacelle, the viscosity of unsaturated polyester resin（UPR）with reactive flame retardant groups is too large to be used in VARTM process. In this paper, a large amount of tests were conducted by the way of adding flame retardant of Dimethyl methyl phosphate(DMMP) so as to make the resin fit for VARTM processing properties requirements as well as increase its flame retardant properties to a higher level. The results showed that, when the content of DMMP was 12%, the resin could be provided with lower viscosity with a reduction of 50.3%, making it possible for the resin to be used in vacuum import process. When the content of DMMP reached 12%, LOI of the casting body reached 31.6, with LOI of glass fiber reinforced plastic of 37.0%, the vertical burning classification of which reached V-0 level without significant drop on mechanical properties of fiberglass reinforced plastics(GFRP). Meet the requirements and provide a good material for flame-retardant wind turbines nacelle.
Experimental Study on Fracture Properties of Hybrid Fiber Reinforced Concrete
Authors: Shao Yun Da , Wang Wen Feng
Published: February 2012

Though fracture test on the fifteen specimens with notch of hybrid fiber reinforced concrete with the size of 100mm×100mm×400mm, this paper explores the hybrid effect between steel fiber and polypropylene fiber and impact on the fracture properties, such as critical effective crack length, critical crack tip opening displacement, effective stress intensity factors and fracture energy. The test results indicate that the addition of fiber is helpful to improve the fracture properties of concrete. Synergistic effect of two kinds of fibers is good, the steel fiber with high elastic module can restrain the cracking of concrete when the crack displacement is small, polypropylene macro-fiber with high ductility is more beneficial to increase the fracture properties of concrete than steel fiber when the crack displacement is big. The best fiber compounding can be gotten when the volume fractions of steel fiber and polypropylene fiber is respectively 0.5％and 1.0％in this experiment.
Effects of Low Temperature and Light Stress on Gas Exchange and Chlorophyll Fluorescence of Pumpkin Seedlings
Authors: Kang En Xiang , Luo Jun Jie , Qiu Hui Zhen , Chen Nian Lai , Su Dan , He Bao Lin
Published: February 2012

Pumpkin（Cucubita pepo L.）seedlings were exposed under different low temperature-light regimes to investigate the responses of photosynthesis and chlorophyll fluorescence to the stress. The results indicated that the contents of chlorophyll increased at first day after treatment and then decreased under special temperature(15/5、20/10、25/15°C )and poor light(50、150、250μmol•m-2•s-1).The net photosynthetic rate, evaporation rate, stomata conductance and intercellular CO2 concentration increased one day after treatment and then decreased, stomata limitation increased above15/5°C special temperature and special poor light. However, under 15/5°C temperature and special poor light, the net photosynthetic rate, evaporation rate and stomata conductance decreased, and intercellular CO2 concentration increased stomata limitation increased in 4 days after treatment then decreased. Ft、Yield(F/Fm’)、qP decreased under special temperature and poor light.The change of these parameters were less under the light density of 50μmol•m-2•s-2 than other light densities, which means that poorer light reduced the sensitivity of pumpkin to low temperature and increased the photochemical activity of PS, but the photochemical quenching (qP) decreased and the non-photochemical quenching(qN) increased at the same time.
Strengthening Mechanisms and Microstructure of Vanadium and Nitrogen Microalloyed High Strength Seismic Rebar
Authors: Cao Jian Chun , Zhao Dong Wei , Chen Wei , Shi Zhe , Zhao Wei Dong
Published: February 2012

Using metallographic test, physicochemical phase analysis, X-ray diffraction and transmission electron microscope, the microstructure of seismic rebars with yield strength of 500MPa, which were fabricated by vanadium and nitrogen microalloying and controlled rolling and controlled cooling, were investigated. The results of metallographic test show that the microstructure in centre and interlayer of tested rebar samples are made up of ferrite, pearlite and a small amount of bainite, but tempered sorbite with thickness of 0.9mm on the edge of the rebars. Physicochemical phase analysis indicates that vanadium in the rebars had precipitated by VN mainly, and the precipitation rates of V and N are 60% and 70%, respectively. The result of strengthening mechanisms analysis shows that fine grain strengthening and transformation strengthening are the dominated contributions to strength and strengthening increments of them are 184.4 MPa and 111.6 MPa, respectively.
Fiber Suitability Analysis of New Delivery Device of Friction Spinning
Authors: Tian Xin Xin , Chen Guo Hua , Wang Jin Quan , Qu Li Jun
Published: February 2012

The principle of rotated airflow transmission of friction spinning is reported in this article. The transmission experiments use six different samples of fibers and yarns, in order to study the fiber adaptability of the flats-delivered device and to draw practical conclusions.
The Structure and Properties of HDPE/EAA-Hydrotalcite Master Batch Nanocomposites
Authors: Qin Jun , Zhang Huan , Chen Li Ping , Yu Jie
Published: February 2012

The High-density polyethylene (HDPE) / the ethylene acrylic acid (EAA) - layered double hydroxide (LDH) nanocomposites were prepared by melt blending with EAA)/ LDH master batch; and the structure and properties of this nanocomposite were studied. The results showed that the EAA acted as an effective compatibilizer for the nanocomposites can enhance the interfacial adhesion between LDH and HDPE obviously, promote the dispersion of LDH in the matrix, increase both the tensile strength and toughness of nanocomposites, and improve the thermal stability and delay the onset decomposition temperature of nanocomposites.
Experimental Study of Mechanical Properties of Bamboo’s Joints under Tension and Compression Load
Authors: Fu Yu Guang , Wang Ming Yuan , Ge Hai Bo , Li Lu
Published: February 2012

The sleeve-bolt connection and the groove-plate connection are two major forms of bamboo’s joints under tension and compression load, and the strength of these two connections is normally governed by the brittle failure mode of shearing-split. A new configuration of sleeve-cement bamboo joint is designed. Comparative loading tests were carried out to study the static tensile and compressive performances of the bamboo joints. It is found that the joint with sleeve-cement connection behaves more ductile under tension and possesses higher strength under compression than those with the sleeve-bolt and groove-plate connections. The sleeve-cement connection ensures effective transition of the axial load in the bamboo joint, and there are more to be optimized in its design.
Durability of Alkali-Activated Slag Cement in Seawater Environment
Authors: Gu Ya Min , Fang Yong Hao
Published: February 2012

The durability of alkali-activated slag mortar in seawater environment, compared with that of ordinary portland cement mortar, was studied by drying-wetting test in accelerated laboratory seawater. The drying-wetting resistance, porosity, performance mechanism, and depth of chloride ingress were analyzed. The results show the mechanical properties of the AAS mortars were improved after 40 cycles, opposite to that of the OPC mortar, which is mostly due to the difference of porosity and pore structure. The chloride penetration resistance of AAS mortar was better, comparing to conventional OPC mortar.
Experiment Study on Capillary Absorption of Fly Ash Concrete at Different Curing Ages
Authors: Sun Jin Yang , Jin Nan Guo , Tian Ye , Jin Xian Yu
Published: February 2012

In this research, an experiment was designed to study the capillary absorption of fly ash concretes. In order to understand the essence of capillary absorption, samples of fly ash concrete with different heights at different curing ages were tested in this experiment. It is found that the samples tested at 7d and 28d had the same sorptivity. And the height of the samples has no influence on the capillary absorption.
Influence of MgCl2 Solution Concentration on Strength of Magnesium Oxychloride Cement Concrete
Authors: Qiao Hong Xia , Liu Yao , Zhou Ming Ru , Yu Hong Fa , Feng Jian
Published: February 2012

The molar ratio of MgO and MgCl2 affects prominently on the strength of Magnesium Oxychloride Cement Concrete. Different ratios were used to explore the optimum mixture proportion with the highest uniaxial compressive strength. The influence of the MgCl2 solution concentration is presented. XRD (X-ray diffraction) and SEM (scanning electron microscope) was used to analyze the micro-mechanism.
Experimental Research on the Properties of Modified MPC
Authors: Chen Bing , Yang Xin Yuan , Liu Ning
Published: February 2012

Magnesium phosphate cement (MPC) was modified by fly ash, silica fume and re-dispersible latex powder and the properties of modified MPC, such as fluidity, setting time and compressive strength, were tested. Based on the experimental results, the contents of 50% fly ash, 10% silica fume and 2% re-dispersible latex powder were chosen to modify MPC and the water resistance of the modified MPC was studied. The experimental results showed that the addition of fly ash prolonged the setting time and significantly increased the compressive strength of MPC. The addition of silica fume improved only the water resistance of MPC. The addition of the re-dispersible latex powder prolonged the setting time and improved the water resistance of MPC.
Northern Livable Settlements Planning and Design of Low-Carbon - In Yancheng, Suqian, Area as an Example
Authors: Wang Jin
Published: February 2012

Settlements planning and design of the settlements are reasonably livable low-carbon has a significant impact from the settlement planning and design of the angles, the use of field measurement and simulation software for energy analysis and statistics, research for Northern livable carbon settlements planning and design. Northern livable for the future development of low-carbon settlements provide a reference.
Design of Lotus-Leaf-Like Decoration Materials
Authors: Wu Rui Hong
Published: February 2012

Lotus leaf structures shows shelf-cleaning properties of water-repellent, it’s convenient to clean, especially the interior decoration materials. Polyester sea-island ultra-fine fiber was chosen as raw materials, the crepe weave was used as the organization structure, and finally through water-repellent nano-coating finishing to form a Lotus leaf-like surface, then the water repellency, the anti-fouling performance and the anti-ultraviolet performance of lotus-leaf-like materials was tested and analyzed. The conclusions drawn are as follows: the water repellency, the anti-fouling performance and the anti-ultraviolet performance of lotus-leaf-like decoration materials was excellent, the UV transmission of the materials was only 2%, which was far below the International standard and at the same time the results shows that the materials had good wrinkle resistance property, it can improve the structure stability.
The Strategies about Chinese Contemporary Building’s History Context in Speed Time
Authors: Wang Tao , Li Yan , Zhang Rui , Nie Fei
Published: February 2012

The Chinese contemporary building’s history context is very important topic in today’s architecture design. Those are new needs in the speed time, which are the Fashion, national and local features, and adapting to the speed life. The Chinese contemporary building’s history context design should not be limited in the traditional form, which the “expressing the spirit and the soul of the history and following the time” is the new inheriting principles. Combining the development of time, some new strategies about this aspect are come into beings, which are inherited traditional architecture spatial pattern heritage and it’s improved about openness, unitized design about building style Which emphasized the whole region features, fashion design, changeability design on material, structure and construction techniques, and etc..
Analysis of Glass Walls Led Display Technology of Shenyang Children’s Library
Authors: Li Chen Qi , Tang Hua , Chang Chun Quan
Published: February 2012

The glass curtain wall LED display devices of Shenyang Children's Library of at night take the night lights effect of multimedia display of building’s facade. A kind of transparent hollow bar LED module installation structure is used in these LED devices. The LED light bar and the scanning power box which is set every 0.5 m along LED bar are assembled in a frame. The LED display technology of glass curtain wall brought significant changes to architectural image.
The Recombination of Time and Space, Architecture, Visual Image and Formal Language - Practice of Accessories Manipulation of “Collage” in Indoorspace Environment Design
Authors: Wang Di , Li Ying , Ma Hui
Published: February 2012

Based on the theories of architectural typology, formal language of interior design, architectural semiotics and design aesthetics, this article, with social survey, illustrates the development overview and prospects of “collage” design technique in space environment through large amounts of data and study and deeply demonstrates the creativity and innovation of accessories approach of “Collage” in space environment.
Researches on the Space and Architectural Construction of Stone Cave-Houses at Diantou Village
Authors: Han Wei Cheng , Wang Chong En
Published: February 2012

Diantou village cave-houses are close to the mountains and are faced with the Fengyu valley mouth. There are many hidden tunnels and burrows in the stone cave-houses in the village which mutually connect. The stone construction similar to barracks has important military function. The construction here is mostly of the floor type, the upper of the pavilion style with the bricks and stones, the top and the bottom being courtyard houses. The transportation, the structure and the defense thought are unique, with the extremely high scientific value and local esthetics connotation.
The Application of Cold-Formed Thin-Walled Steel in A Villa Building Design
Authors: Fu Jian , Wu Zong Liang , Xu Zi Shuai , Li Yu Ge , Tang Ke Dong
Published: February 2012

This paper introduces the material properties of Cold-Formed Thin-Walled Steel, and analyzes the structure and building performance of the structure system, through briefly introducing and analyzing the application of Cold-Formed Thin-Walled Steel Structures in a villa building, to provide reference for the industry.
Study on Sulphate Resistance of Often-Used Cementitious Material of High Performance Concrete for Marine
Authors: Gu Kun Peng , Wang Cheng Qi
Published: February 2012

Corrosion resistance coefficient and expansion ratio of different cementitious materials are tested under the sulphate corrosion experimental condition, sulphate resistance of often-used cementitious material of high performance concrete for marine is studied and evaluated. The results show that sulphate resistance of portland cement is better than ordinary portland cement, and both of them are low, often-used cementitious material of high performance concrete for marine have certain sulphate resistance, which are better than ordinary portland cement and portland cement, and some of them have strong or very strong sulphate resistance. The evaluation results of the sulphate resistance of often-used cementitious material of high performance concrete for marine are not unanimous completely by corrosion resistance coefficient method and expansion rate method. Sulphate corrosion mechanism of different kinds of cementitious material is analyzed.
Discuss on the Unification of Architecture Innovation and Structure Form
Authors: Xu Rui Ping , Xing Shuang Jun , Guan Bin Jun
Published: February 2012

Innovation was the life of architecture creation. The pursuit of architect to innovation was endless. This article analyzed the unification of architecture innovation and structure form through typical positive and negative cases, and put forward that the architect should not only have the innovation thought, but also have enough knowledge and accumulation for new technology, thus demonstrating the development directions of the unification of architecture innovation and structure form.
The Road of Regional Architecture with Chinese Characteristics
Authors: Zhang Guang Ping , Zhang Dong Sheng
Published: February 2012

Through the regional architecture of the basic theory and practice brief, clear regional architecture of containment "building globalization" a positive meaning; review construction with Chinese characteristics, geographic origins and development, put forward in the construction boom of contemporary China, the research area building necessity; interpretation of the generalized architecture as a guide, a modern fusion of traditional and implement the concept of sustainable development of the concept of regional architecture with Chinese characteristics is the first line of the road.
An Elicitation from the Construction of Dam on the Inlet of Sea for the Urban Planning and Urban Construction
Authors: Ye You Hua , Wu Jin , Lin Shi Shi , Li Jie , Zou Jian Feng , Yu De Yong
Published: February 2012

Urban planning and urban construction are two important aspects during the urbanization process. Dam, one of the common projects in urban planning and urban construction, has induced more and more interest by far. Negative ecological effect was the mainly view on the dam construction. Does all the plans and constructions of dam were destructive to ecosystem? In order to answer this question, a dam on the inlet of sea in Dongchong, Shenzhen City, China was chosen, field investigation and remote sensing analysis were carried out. Present study aims to test if the planning and construction of dam on the inlet of sea is beneficial to the mangrove ecosystem. Results showed that the planning and construction of dam on the inlet of sea had brought an environment hospitable to mangroves and increased the distribution area of mangrove ecosystem. Results indicated that the planning and construction of dam on the inlet of sea was beneficial to the mangrove ecosystem and not all the planning and constructions of dam were disadvantage to ecosystem. This study may contribute to knowledge of how to maximize favorable factors on the ecosystem in the future urban planning and urban construction.
Green Design for Products Based on Modern Industry
Authors: Cheng Zhi Li , Cheng Wei
Published: February 2012

As modern industry highly develops and environmental & energy issues are increasingly serious, green design for products has become the key to sustainable development. This article explains the meaning of green design and discusses the criteria of green design on the four aspects of environment, technology, economy and agreeableness. On this basis, the article describes green design methods for products in the link of modern industrial design.
Innovation Dynamics of Materials Manufacturing Industry: Changes in Management of Technology due to Socio-Economic Changes
Authors: Nakagawa Masahiro , Watanabe Chihiro
Published: February 2012

A patent specification contains useful data to analyze technological innovation. A set of patent applications filed by a firm represents its MOT (management of technology) strategy. Analyzing patent application in line with socio-economic change may demonstrate the changes in MOT strategy. It is demonstrated that in the late 20th century and the early 21st century, the range of technological collaboration was broadened due to MOT strategy and socio-economic changes. Today, as various types of entities are connected in global information networks, utilizing interplay between industries and those entities will be a critical factor for success in materials innovation.
Study on Production Safety Accident Prevention and Control Method
Authors: Lv Rui Hua , Kang Ying Ying
Published: February 2012

In this paper, there is an analysis of the situation of production safety accidents that is the "Eleventh Five-Year" period, Hebei Province in China. The characteristics of production safety accidents and laws will be revealed. The monitoring method of safe production run will be proposed as the basis of decision making for the safe production conditions can be effectively controlled.
The Empirical Research on Information Innovation System - Evidence from the 322 Questionnaires in China’s Enterprises
Authors: Song Din Wei , Li Ming Xing , Zhang Tong Jian
Published: February 2012

In order to reveal the incentive functions of information technology innovation during the process of information construction, factor analysis is used in this paper. By exploratory factor analysis, reliability and validity test, SEM can effectively reveal the correlation between different information technology elements in Chinese enterprises. For illustration, 322 copies of questionnaires are sent out, 297 questionnaires are returned and the response rate is 89%. The total sample of 138 is randomly selected for exploratory factor analysis. The empirical results show that the validity of the sample structure is strong, and each indicator in the corresponding volume is greater than the load factor of 0.5 on the threshold. The empirical research has revealed information technology microcosmic mechanism in the process of information construction, which can provide the effective theoretical references for enterprises to further strengthen the information construction and raise the management efficiency.
Performance Reliability Modeling Based on ARIMA Model
Authors: Bai Fang
Published: February 2012

Performance reliability method (PRM) has great advantages on modeling with few failure data by using the performance degradation data. The purpose of this paper is to find the defects of PRM based on HOLT model, and PRM method based on ARIMA model was proposed by introducing the product fleet real-time performance reliability information to the measuring points. Finally, an example applying on the aero-engine remaining life prediction was taken to validate that PRM method based on ARIMA model can avoid variances errors derived from the formula, compared with the PRM model based on HOLT model. The relative error of the improved method has 11.765% lower. So we can draw a conclusion that this method is effective and feasible.
An Approximation Algorithm for Solving Generalized Separated Continuous Conic Programming
Authors: Wang Xiao Qing
Published: February 2012

In this paper, we study the algorithm for solving a kind of new problem called generalized separated continuous conic programming (GSCCP), which has great modeling power. Based on the relationships between GSCCP and its discretization, GSCCP and its dual, we proposed an approximation algorithm which can produce a feasible solution for GSCCP with prescribed precision. We also present a numerical example to illustrate the efficiency of this algorithm. To our knowledge, this is the first algorithm for solving GSCCP so far.
Zigzag Carbon Nanotubes under Simple Torsion – Structural Mechanics Formulation
Authors: Kasti Najib A.
Published: February 2012

When using structural mechanics to study the deformation of carbon nanotubes (CNTs), one has to pick the structural mechanics properties that are equivalent to the molecular mechanics properties. In a previous publication [1], we have determined the relation between the bending stiffness EI/a used in structural mechanics and the bond bending stiffness C used in molecular mechanics for zigzag carbon nanotubes under simple tension. This paper extends the concept and determines the corresponding relation for simple torsion. We show that the relation obtained is different than that of simple tension; in simple torsion, EI/a is load and chirality dependent. However, for the particular case of a graphene sheet, simple tension and torsion lead to the same value of EI/a, namely C/2. We also include the structural mechanics deformation of the tube that accounts for axial, bending and torsional structural stiffnesses. Unlike simple tension, the deformation in the case of simple torsion has the axial stiffness coupled to the bending and torsional stiffnesses.
Experimental Research on Wear Loss of Slipper Pair in Axial Piston Hydraulic Motor Lubricated with High Water Based Fluid
Authors: Gu Yong Xia , Zhou Zhong Ning , Gao Fei
Published: February 2012

The slipper pairs with concaves of reasonable and unreasonable structures and without concave originally are chosen for the experiment. The experimental results show that appropriate concave distribution can improve the wear and tear condition of the slipper bottom. Under the same experimental condition, the fringe wear volume can be reduced by 28.77%, and the overall wear volume 68.72%, which is the best result.
System Reliability Analysis for Planar Mechanisms Using the Matrix Method
Authors: Huang Xian Zhen , Zhang Yi Min
Published: February 2012

In this paper, a practical technique for system reliability evaluation of kinematic performance of planar linkages with correlated failure modes is proposed. Taylor series expansion is utilized to derive a general expression of the kinematic performance errors caused by random design variables. A practical limit state function for reliability analysis of the kinematic performance of planar linkages corresponding to different failure models is established. Through the reliability theory and the linear programming method the upper and lower bounds of the system reliability of planar mechanisms are provided.
Analytical Method for Temperature Distribution in Buried HDPE Pipe
Authors: Li Zheng , Zhu Hong Wu , Qiu Pin Xian , Seibi Abdennour
Published: February 2012

HDPE pipes have been widely used in industry, which were mostly buried underground. Because of special material properties, which were affected by temperature, it is necessary to get the temperature profile of buried HDPE pipe. Most past solutions for temperature distribution in buried pipe were numerical ones. The aim of this paper was to present a simple analytical model under steady-state heat transfer condition with a new special heat transfer coefficient introduced. FEM method was used to check this model. The influences of fluid temperature, soil surface temperature and soil depth on pipeline temperature were also analyzed. The results showed a good agreement between the analytical model and FEM method. And fluid temperature in pipe was proved to be the key factor that affected the pipe temperature .
Influence of Speed-up and Speed-down on Internal Stresses of Wound Rolls in Web Handling Process
Authors: Mongkol Mongkolwongrojn , Puttha Jeenkour
Published: February 2012

In web winding process, the effects of speed-up and speed-down on internal stresses of wound roll have been investigated. The air-entrainment can be obtained theoretically using the modified nonlinear Hakiel model. In this research work, air-entrainment model established by Hamrock and Dowson was applied to estimate the initial air film layers into a wound roll in the winding system with a nip-roller. Moreover, the characteristics of a wound roll were examined under varying tension and varying speed conditions. The numerical results showed the radial stress, tangential stress, and friction force distributions at central inside a wound roll under the condition for a wound roll without wrinkle and slippage phenomena.
Advances and Trends in Numerical Simulation of Vortex-Induced Vibration
Authors: Yin Zhong Jun , Wang Xiao Song , Han Tian
Published: February 2012

Vortex-induced vibration (VIV) was largely investigated by experiments. However, with the improvements in computing capabilities, the numerical method is becoming more and more popular. This paper reviews the literature on the numerical simulation of VIV and focuses on the advances in the last decade.