bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental Study on the Mechanical Property of Concrete-Foam Glass Sandwich Block
Authors: Wang Jian Min , Wang Neng Jun , Yuan Li Li
Published: February 2012

Foam glass is a kind of inorganic heat-insulating material. It possesses excellent properties such as fire proof, water proof, heat keeping and insulation, sound absorption. But foam glass is hard and brittle; it is easy to be broken in the process of transportation and construction. Furthermore, the construction technology is complex and uneconomical whether in the external or internal thermal insulation system in construction. In this paper, foam glass plate was inserted in the concrete test block and was poured together into the Sandwich block. The compressive strength and the tensile strength normal to the interface between the foam glass and concrete blocks were studied through experiments. It will provide effective technical supporting for further study on the manufacturing of integrally poured concrete-foam glass Sandwich building blocks.
Properties Analysis of Seaweed as a Traditional Building Material
Authors: Yang Jun
Published: February 2012

Seaweed house is special tradition at Jiaodong Peninsula, it has good ecological characteristics. This has much to do with the properties of the roof materials and the way of roofing construction. This text analyzes and discusses the components and bio-structure of seaweed (eelgrass), and the measures of these roofs, to reveal the contribution of seaweed materials on the seaweed house.
Test Study on the Dynamic Parameters of Compound Composite Foundation
Authors: Wang Na , Feng Zhen , Da Yong , Lin Wei
Published: February 2012

Influence of factors such as displacement ratio and confining pressure on the dynamic properties of composite specimen with GC pile and CFG pile was studied under a wide range of strains by regression analysis，a simple method for calculating the dynamic elastic modulus and damping ratio is Proposed and an empirical formula considering the mentioned factors above is also presented to provide a elementary reference for anti-seismic design of composite foundations with GC piles and CFG piles.
Renewal and Development of Vernacular Construction Material and Residence in West China
Authors: Li Jun Huan , Liu Na
Published: February 2012

Chinese vernacular residence is a unique type of architecture which evolved through time under the special geographical conditions. From the beginning of the traditional residence, it has been constructed using natural materials, forming a set of mature construction methodology with natural material. The article analyzed and reflected on the traditional building material in west China. The construction of traditional villages and residence are taken as object of study to explore the building strategy of constructing vernacular village houses. Efforts have been made to establish a conversational relation between tradition and present world and also to propel the process of renewing the vernacular architectures rationally. Moreover, references can be provided to rebuild regional culture in vast rural area in China, and the sustainable development and creation of vernacular architecture.
Measurement and the Distribution Law of In Situ Stresses at Deep Depth of Xingcun Coal Mine
Authors: Wang Jiong , Guo Zhi Biao , Zhou Feng , Su Feng Bin , Li Bao Liang
Published: February 2012

Many kinds of in situ stress measurement methods are used nowadays, two most common of which are the overcoring and the hydraulic fracturing methods. In order to study the distribution law of in situ stress field in the deep position of Xingcun coal mine, 4 points of in situ stress measurement were carried out in underground roadways at the -1200 m level adopting the overcoring method. The hollow included technique was used to measure the 4 points of in-situ stress. According to the analysis of the measurement data, the results indicated that: (1) Among the three principal stresses on all measurement points, two principal stresses were nearly horizontal and one was nearly vertical. Furthermore, the maximum horizontal principal stress was more than the vertical principal stress, and the magnitude of vertical stress was equal to the weight of overburden rock mass;(2)The value of the maximum horizontal principal stress reached 52.3 MPa , the directions mainly concentrated on the extension of N42°W – N85°W, and the obliquity mainly concentrated on the extension of -29° – 10°;(3)The ratio of maximum horizontal principal stress to vertical principal stress was 1.42 - 1.64 with an average value of 1.55. The result presented that the in situ stress field in Xingcun coalmine at the depth of -1200m was dominated by tectonic horizontal stress. According to the results above, we gained the in situ stress states and the distribution law in the measured region. At the same time, it can offer reasonable basic parameters for underground roadway layout and support design of Xingcun coalmine.
The Research on Microscopic Failure Criterion of Masonry
Authors: Yang Wei Jun , Li Yao , Jiang Ning
Published: February 2012

According to the microscopic structure and mechanical, a suitable expression failure mechanism of masonry has been pointed out and validated by code and test data of at home and abroad and, furthermore, the usefulness of it in masonry under shear and press state is proved.
Analysis on Reductive Kinetics of SSI Reduced by Hydrogen
Authors: Li Jun Guo , Li Shou Zhang , Tian Wei
Published: February 2012

Spherical sponge iron (SSI) with high activity and intension could be prepared through direct reduction by hydrogen. To optimize the reduction technology, reductive kinetics of SSI was analyzed on the basement of unreacted core model. In the light of the single reaction surface theory, the ratio of internal diffusion resistance fI and chemical reaction resistance fR was calculated according to the weight loss curve of SSI reduction. Under different temperature, both fI and fR increased with the reaction time, especially the radium of unreacted core was small after a period of reaction time. Compared the ratio of fI and fR, it concluded that SSI reduced by hydrogen was controlled by the chemical reaction, combination of chemical reaction and the internal diffusion, the internal diffusion under the temperature being lower than T3, from T3 to T4, more than T5, respectively.
Form and Formalism: On the Future Role of Structural Design in Architectural Education in China
Authors: Herr Christiane Margerita , Fischer Thomas , Millard Stephen , Brown Andre
Published: February 2012

Architectural designing, creating new form and often unknown structural assemblies, is, we argue, distinct from structural engineering approaches that focus on the dimensioning of members in well-understood kinds of assemblies. Based on a review of compositional approaches, we offer in this paper an appraisal of the dominant educational approaches in structural engineering and architectural design. Based on current trends in both professions, we anticipate a future that sees architectural and structural engineering responsibilities no longer strictly separated but collaboratively integrated, in a way that harnesses benefits of specialist expertise, yet–somewhat reminiscent of the role of the medieval master builder–recognizes the need for generalist awareness and oversight required to achieve architectural and structural innovation. From this position, we propose a learning approach for architectural students that focuses less on rote learning and calculation and emphasizes applied learning through model building and the development of "structural commonsense" through the detailed study of precedent case studies.
Based on Microscale Laser Shock Processing of Metal Material Characteristics Analysis and Prospect
Authors: Wang Bang Fu , Zhu Xue Li , Xie Ou , Yin Zhen
Published: February 2012

It is introduced that laser shock peening is suitable for machining metal micro components. The micro scale effect and elastic-plastic theory of micro scale laser shock processing were analyzed and discussed. The research status, mechanism, key technology and influence factors of microscale lager shock peening were summarized and the problems in microscale lager shock peening were analyzed, which provides guidance for further research.
Material Development of Nano Silica Indonesia for Concrete Mix
Authors: Bi Jon , Hariandja Binsar , Imran Iswandi , Pane Ivindra
Published: February 2012

Based on data from Indonesian Directorate General of Mineral and Coal Technology, popular sources of silica sand in Indonesia can be found: Bangka Belitung, Pangkal Pinang,South Sumatra, Lampung, West Kalimantan, South Kalimantan, West Java, and East Java. Unfortunately, the use of silica sand in concrete mix is still limited as filler material. The challenge is then to explore the use of such silica sand, for instance in the form of nano silica. This research work explores silica sand from: Bangka Belitung, Pangkal Pinang, Lampung, West Java, East Java, West Kalimantan and South Kalimantan. The selected silica sand are then processed by the novel method developed by Indonesia Center for Ceramics using Polishing Liquid Milling Technology. The result is expected to contribute in the development of increased added value of locally available silica sand and to advancing application of nano silica for concrete.
The Study of Red Mud Addition Influences in Metakaolinite-Based Geopolymer Characteristics
Authors: Simatupang Partogi H. , Hanafi Razie , Purwasasmita Bambang Sunendar , Imran Iswandi , Pane Ivindra
Published: February 2012

Bauxite tailing waste or commonly known as red mud is considered to be a very hazardous material. The using of red mud to make alternative building material has been widely studied for many years. Geopolymer as one of the breakthrough in the searching of ordinary portland cement/concrete substitution provides many options and possibilities of using different types of pozzolanic or alumina-silica materials. In this study, the using of red mud in metakaoline-based geopolymer paste has been studied in three different curing conditions for 7 days of sample age. Each sample then characterized both, macroscopically and microscopically including compressive strength testing, SEM photograph, XRD and FTIR spectroscopy
Study on Primary Reaction Kinetics of Melamine Aminated Monomethoxylpoly (ethylene Glycol)
Authors: Li Zhen , Ding Yan , Liu Jin
Published: February 2012

The reaction kinetics of amination of monomethoxylpoly (ethylene glycol) (mPEG) with melamine (MA) at the molar ratio of 1:1 was studied by FTIR. This amination reaction was carried out with potassium hydroxide as reaction catalyst under high-pressure conditions at different temperature (160 °C, 170 °C, 180 °C, and 190°C) for different time (2 h, 3 h, 4 h, 5 h and 6 h). A series of melamine aminated monomethoxylpoly (ethylene glycol) (MA-mPEG) were synthesized, and the long chain of polyethylene glycol ether was grafted on the amino groups of melamine by amination. The amination kinetics parameter of reaction order and the activation energy are about 1.5 and 45 KJ/mol, respectively. In addition, the grafting amination yield increased with the number average molecular weight of mPEG at the same reaction condition.
Experimental Study on Mix Proportion of Fair-Faced Concrete for Urban Bridge
Authors: Li Xiao Ke , Ma Xiao Lu , Zhang Xiao Yan
Published: February 2012

As the needs of fair-faced concrete structures for the ecological environment, this paper studies the mix proportion of fair-faced concrete in C30 strength grade by experiments. 13 concretes were designed and tested considering the water to cement ratio, the cement content, the percent of pulverized fly ash, the sand ratio, the water reducer and the formwork parting agent. The workability of fresh concrete, the compressive strength of hardened concrete at 7d, 28d and 56d, and the apparent quality as well as the surface brightness of concrete were got. The results show that the surface color and brightness of concrete were influenced successively by the cement content, the water to cement ratio, the sand ratio and the percent of pulverized fly ash. The use of formwork lacker may bring concrete into better brightness, while the mix oil may be a good selection considering the cost of parting agent. The suitable mix proportions of C30 concrete for urban bridge are proposed.
Research on the Light Transmitting Cement Mortar
Authors: Li Yue , Xu Zhi Yuan , Gu Zhong Wei , Bao Zhen Zhou
Published: February 2012

The light transmitting cement mortar is to rely on a large number of optical fiber embedded in the block transferring light from the light side surface to the dark side. In this article, the preparation method of light transmitting cement mortar (LTCM) was introduced and the strength and light transmitting properties of LTCM were tested too. The results show that the LTCM can get higher light transmitting ratio and can also achieve, even exceed the light transmitting ratio of the 70g A4 print paper in the light wavelength range of 520~630nm.
Experimental Study on the Combined Aggregate Concrete Strength
Authors: Zhang Yan Kun , Chen Er Yan , Guo Zhen Lei
Published: February 2012

From the experimental research, the cube compressive strength and prism compressive strength of combined aggregate concrete are compared. Based on regression analysis, the influence of different substitution ratio of lightweight aggregate, age of concrete and water-cement ratio are studied, and the age coefficient is analyzed. According to the test results, the formula of compressive strength of combined aggregate concrete is given.
A Study of Thermal Modeling for Fire Spread Mechanism in Residential Building
Authors: Ahn Chan Sol , Kim Heung Youl , You Yong Ho , Kim Hyung Jun
Published: February 2012

This study is intended to present a computational thermal model for a residential building. As the Performance Based Design is more popular, fire-intensity and fire-load have turned out to be very important factors for building design and can be predicted through some computational work. To predict and estimate the fire properties of a residential fire, we made some numerical models of combustibles and residential building. In a bid to validate the estimate values, computational analysis results from numerical models were compared with real fire tests. For computational analysis, the Fire Dynamics Simulator was used with Large Eddy Simulation model for turbulence. Consequently, fire-intensity was well predicted and flash-over of rooms were successfully estimated.
Knitting Crafts and Products Design of the Double-Faced Jacquard Stitch
Authors: Song Xiao Lei , Cheng Bing Ying , Wei Li , Yue Pei Pei
Published: February 2012

Jacquard stitch is widely used in clothing and many other areas in recent years. The paper describes the structural features, classification and knitting crafts of the jacquard stitch. Particularly are the knitting process and the locus of needles on the needle bar. However, newly design by the fancy appearance formation regularity is the emphasis of this paper. The design principle is according to the arrangement of color yarns and the drafting of new stitches. Cotton and polyester blended yarns are taken as the raw materials with several colors. Finally, a style of the double-faced jacquard stitch of the complementary yarns and a style of the sesame points are finished on the double-needle bar by the flat knitting machine.
Construction Technology and Quality Inspection of Building Waterproof
Authors: Gong Wen Ye , Hao Li Jun , Bai Biao
Published: February 2012

Leakage is a difficult problem influenced the quality of engineering. According to the latest research, improper construction accounted for 45%, short-lived materials accounted for 22%, poor design accounted for 18%, and management disadvantage accounted for 15%. So, not familiar with the technical regulations and imperfect of the quality inspection method are main reasons to cause leakage. GT is as an example, to analysis the method of construction technology and quality inspection in engineering. Introduction
Effect of Moisture Absorption on the Bending Strength of CFRP
Authors: Zhang A Ying , Li Di Hong , Zhang Dong Xing
Published: February 2012

The effects of moisture content on the bending strength of T300/914 composite laminates that immersed in water for 7 days and 14 days was discussed in this paper. The three-point bending tests were conducted on the composite laminates. Experimental results reveal that the moisture content in the laminates increased with immersion time and that moisture absorption accelerated damage propagation in the composite laminates. The bending strength of the unaged, aged specimens were characterized and analyzed. Compared to the unaged specimens, the bending strength of the composite laminates immersed for 7 and 14 days decreased by 6.62% and 16.98%, respectively. The results revealed that the bending strength of the aged specimens decreased with the increasing immersion time.
Study on the Performance of Nano Calcium Carbonate Modified Asphalt Concrete AC-13
Authors: Hao Xiu Hong , Zhang Ai Qin , Yang Wei
Published: February 2012

To make nano calcium carbonate as the modifier, firstly the best proportion of nano calcium carbonate is determined as 6% by comparing the influences of different proportions of nano calcium carbonate to the indexes of asphalt. Then the influence of mixing with nano calcium carbonate to the performance of asphalt concrete AC-13 has been studied. Tests show that, the mixing of 6% nano calcium carbonate has improved the dynamic stability of asphalt concrete AC-13 from 991 times/mm to 1269 times/mm; the residual stability from 0.87 to 0.94. This indicates that after mixing with nano calcium carbonate, both the high temperature performance and water stability of asphalt concrete have been improved.
Study on the Practicability of PVA Porous Cement Concrete Pavement
Authors: Man Du La , Hu Xiao Yu
Published: February 2012

In this study, Through the research of the porous concrete which have special structure,without sand and added PVA fibers form a fiber cement-based materials as the bonding materials of porous concrete. The results show that after mixed with quantitative PVA fibers, the bonding performance of the porous concrete aggregates can be enhanced, the flexural strength obviously improved, obtained the effective porosity and the best PVA fiber contents.
High Temperature Rheology Property of Asphalt Mastic with Different Mineral Filler
Authors: Li Xiao Min , Nan Xue Li , Wei Ding Bang
Published: February 2012

This paper focus on the high temperture performance of asphalt mastic based on repeated creep and recovery test.Asphalt mastic with four mineral filler(limestone,fly ash,hydrated lime and cement)was studied.According to the research result,it showed that asphalt mastic with different mineral filler has different rheology properties,coincide with test result of mixture.
Studies on Preparation of Concrete Water Reducer from Xylitol Residue of Corn Cob
Authors: Wang Zhe , Xue Jing Wen , Qu Jian Bo , Liu Wen Xia
Published: February 2012

Xylitol residue from corn cob was modified by alkaline sulfonation to produce lignosulfonate with good properties for concrete water reducing agent. Results showed that the optimum condition for lignin sulfonation was: total alkaline charge (calculated by Na2O) 16%, cooking temperature 170°C, holding time 3h, degree of sulfitation 80%. The yield of lignosulfonate at this condition was 68.1%. The fluidity of cement paste could reach 124mm when lignosulfonate dosage was 0.35% (on the base of solids). The surface tension of 1% lignosulfonate solution was 46.1 mN/m, and the content of sulfonic group was 2.16 mmol/g.
Hydrates and Paste Structure of Slag-Fly Ash Based Cementitious Materials
Authors: Fu Cheng Hong , Ni Wen , Wu Hui , Li De Zhong
Published: February 2012

Cascade grinding mode is often applied to prepare Slag-Fly Ash Based cementitious materials with high volume of fly ash and slag and less cement clinker. This process has low water requirement and well fluidity, which is suitable to prepare HPC．When the W/C is 0.36, the 28d compressive strength is 58.93 Mpa, 28d flexural strength is 14.26 Mpa. By X-Ray diffraction analysis (XRD) and Scanning Electron Microscope (SEM) analysis the results show that main materials in grinded sample are well activated by mechanical force and chemical action; more Aft are produced and observed in 3 days hydration products and the great amount of C-S-H gel has continuously generated with the growth of hydration time. By Infrared(IR) analysis, the results show that in the hydration products, the network of Silicon Oxygen Tetrahedron and Aluminum Oxygen Tetrahedra have depolymerized significantly; in the hydration process and various raw materials mutually promoted each other to accelerate the hydration reaction. The hydrates and paste structure of slag-fly ash based cementitious materials were explained．
Voltage Stability Criterion in New and Key Nodes and Regional Research
Authors: Li Qing En , Ren Rui , Qiu Jian
Published: February 2012

In recent years， as the load increasing gradually，problems in voltage stability of regional power network which is the terminal of power grid is serious. From the voltage stability machine rational analysis to roll out small interfering voltage stability criterion of new, and the modal method is used to determine the key nodes and areas of the system theory basis.
Strength and Durability Evaluation by DEM Approach of Green Concrete Based on Gap-Graded Cement Blending
Authors: Le L.B Nghi , Stroeven Piet
Published: February 2012

This paper discusses the particle packing background of cementitious materials. On micro-level the Portland cement and eventually the mineral admixture grains can be considered packed in the watery environment. Particularly for (super) high performance materials, the packing density can be quite significant. An economic and due to fast computer developments reliable way to study packing of the binder, is by modern discrete element modeling (DEM) approach. In this paper use is made of a concurrent algorithm-based dynamic system, HADES. Hydration is simulated based on spherical grains. Thereupon strength can be studied on the basis of packing density. For durability issues, the complex and tortuous 3D pore structure has to be investigated. This paper uses for the assessment of pore characteristics the robotics-inspired DraMuTS system. Hydrated Portland cement is compared with gap-graded rice husk ash-(RHA)-blended (green) Portland cement. Experiments on gap-graded RHA-blended PC concrete are used as reference. Packing density is shown improved by gap-graded packing. What is more spectacular are the effects of gap-grading with RHA on the pore characteristics obtained on the DEM-produced virtual materials. This paper discusses the expected positive effects on transport-based durability issues due to gap-graded packing-induced changes in the pore system
Rain-Wind-Induced Analysis of Transmission Steel Tower
Authors: Qin Li , Ding Wen Jing
Published: February 2012

The paper established a finite element model of DZV674 linear tower (500 kV Shiyang - Wuyi transmission project) by ANSYS and studies its dynamic properties. Its first 10 order modes and natural vibration period are obtained. Based on the principle of Kaimal power spectrum and linear filtering method (AR) for simulation time-history of fluctuating wind speed, power spectrum simulation program of wind-speed is got by using Matlab. The rain load simulation is finished on the former simulation.The dynamic analysis of the transmission tower is calculated subject to wind load and rain-wind load.The results demonstrate that wind is the main design load in rain-wind-induced, but the effect of rain shouldn’t be neglected.
Research of Fly Ash-Epoxy Resin Composite
Authors: Dong Jin Hu
Published: February 2012

This article researched fly ash-epoxy resin composite properties and microstructure changing with the increase of epoxy resin content. The result show that, when the epoxy resin content increased to 30%, the tensile strength, rupture elongation and impact strength of composite increased to 329%, 168% and 257% respectively compare with the composite of epoxy resin content is 15%, and various properties change little with the epoxy resin content continuous increasing. And the composite formed 2μm or so and uniform distributed micro-pores when the epoxy resin content is 30% and the consistency of micro-pores increasing and some small micro-pores gathered into larger with the epoxy resin content increasing. Considering various properties, the fly ash-epoxy resin composite has the highest cost-effective when the epoxy resin content is 30 ~ 40%.
Preparation and Photocatalytic Performances of TiO2/SnO2 Composite Films Supported on Carbon Fiber
Authors: Zheng Rong Fu , Hu Hai Xia , Fu Ya Qin
Published: February 2012

The compound photocatalytic materials of TiO2/SnO2 films with bilayer structure supported on polyacrylonitrile based carbon fiber (PAN-CF) substrates were prepared via the dip-coating technology, and Titanium dioxide (TiO2) and tin dioxide (SnO2) precursory sol were prepared by sol-gel method. Field emission scanning electron microscopy (FE-SEM), X-ray energy spectrum (EDS) and X-ray diffraction (XRD) were used to characterize the structure of materials, and methyl orange (MO) with concentration of 80mg/L as the target degradants was used to investigate the photocatalytic property of the composites under UV irradiation. The results revealed that the photocatalytic activity of composite is effectively enhanced result from the application of TiO2/SnO2 bilayer structure films, which can be considered as that the recombination of photo-induced electrons is restrained by SnO2 film effectively, and the 3#-TiO2/SnO2/CF exhibited optimum catalytic performance. In addition, the superiority of carbon fiber as carrier was played fully due to the generation of porous films, which is favorable to capture the intermediate products.
Design Procedure Concerning Composition of Composites Containing Gypsum-Free Cement
Authors: Brožovský Jiří , Zach Jiri
Published: February 2012

Composites containing gypsum-free cement features quick strength rise at the age between 1 and 3 days. Such property predestine gypsum-free cement concrete for repair of building constructions that are to be put into service as soon as possible. Repair of concrete-cement pavements and surfaces of similar character belongs to one of field of gypsum-free cement concrete application. Materials of these constructions shall comply not only with required strength characteristics but also with needed durability. That is why resistance to alternate frost, thawing and chemical deicing substances is the principal property of GFC concrete surface. Properties of gypsum-free cement concrete – whether fresh or hardened – are mainly affected by following factors: properties of gypsum-free cement (fineness of grinding, quantity of admixtures controlling initial setting time, clinker chemical composition) as well as mineralogical and chemical composition of natural compact aggregates, and water-cement ratio. Factors listed above are to be taken into account also during design of gypsum-free cement concrete composition. This article deals with design procedure concerning composition of concrete containing gypsum-free cement considering its specificities.
Hydroceramic-Concrete Designed for a Project Material of Soil Stabilization
Authors: Chen Ri Gao , Chen Yi Lan , Zhao Xin Yue , Grutzeck Michael W
Published: February 2012

As the traditional material commonly used, cement has its own limitation such as limited solidifying objects, bad stability in water, high cost and uneasy adjustment in coagulation time, not good for solidifying the waste etc.. The succeed in developing a hydroceramic-concrete for soil stabilization can take place of traditional cementing material such as conventional concrete applying and avoid the shortage of them. Here we show that a mixture of Class F fly ash, metakaolin and 8M NaOH (hydroceramic) will harden at room temperature, attaining 9.2 MPa compressive strength at 90 days, It is suggested that a hydroceramic-concrete may be used as a project material of soil stabilization as it has similar or even better compressive strength than conventional concrete.
Adsorption Characteristics of Congo Red from Aqueous Solution on the Carboxymethylcellulose/Montmorillonite Nanocomposite
Authors: Zhao Ya Hong , Wang Li
Published: February 2012

The carboxymethylcellulose/montmorillonite (CMC/MMT) nanocomposite was prepared by a solution intercalation technique. The effects of contact temperature, the initial pH value of dye solution, contact time and the initial dye concentration on the adsorption capacitiy of CMC/MMT nanocomposite for Congo red (CR) were investigated. The adsorption kinetics and isotherms of nanocomposite were also studied. The results indicated that with the contact temperature increasing and the initial pH value decreasing, the adsorption capacity of the CMC/MMT nanocomposite increased. Compared with the adsorption capacity of CMC (62.42 mg/g), the nanocomposite exhibited the higher adsorption capacity (161.08 mg/g). The adsorption behaviors of CMC/MMT nanocomposite showed that the adsorption kinetics and isotherms were in good agreement with pseudo-second-order equation and the Langmuir equation.
Research on Strength Control and Evaluation of Fly Ash Concrete
Authors: Niu Hui
Published: February 2012

This manuscript makes experiments on the relation between each index and fly-ash concrete strength, such as W/B, Sa, S/A and so on. At the same time we applicate artificial neural networks into HPFC The main research is on the relationship between component material and performance of the high-performance fly ash concrete, and also on the fly ash high-performance concrete quality control system and method, which promotes fly ash in foundation and basement construction engineering application. This text introduces the treatment technology of the non-linear artificial neural network, utilizing mixing ratio of existing concrete (import) and data as the performance index (output) to train the network, setting up concrete to non-linear import--Output mode relation, constructing concrete performance model, promoting prediction precision of concrete performance further.
Study on the Wood Carbon Storage in Low Carbon Economy Construction
Authors: Qin Lei , Guo Ming Hui
Published: February 2012

The paper which based on the idea of “low carbon economy” scanned the wood carbon storage function and analyzed the wood carbon storage from the present research situation of home and abroad. And it put forward the research content and specific research methods of the wood carbon storage. Finally it summarized the expected achievement and development trend of studying the wood carbon storage under the construction of low carbon economy. The research will have the practical directive function about realizing the energy saving and emission reduction of carbon dioxide, transforming the mode of economic development and improving the wood’s carbon storage.
Green Methods in Medical Environment Design
Authors: Cui Yi , Miao Zhan Tang
Published: February 2012

Green medical environment calls for fine quality of environment both in outside and inside. The article explains the function of natural ecological green plants in the improvement of medical environment quality from different angles, sums up the principles of green space design in various districts，and points out to lay stress on the characteristic of environment and to create green hospital which combine with the nature will be the direction of healthcare buildings design in the 21st century.
Research on Teaching Operation Modes of Design Courses in Architecture Education
Authors: Gong Wen Ye
Published: February 2012

architecture, scene type, exchange type, cooperation type, defense type Abstract. Architecture is an ancient subject discipline. Over the years, its unique teaching methods have formed. In this article, based on the analysis of present teaching problems, the author proposed teaching methods of “scene type”, “exchange type”, “cooperation type” and “defense type”. Through the teaching practice, the author research and try the new teaching operation modes of design courses, to improve the level of teaching and learning in architecture.
A Comparative Study on Traditional Architecture Culture of China and European in Historical Development View
Authors: Zheng Yu Chun , Yan Chun Mei
Published: February 2012

Owing to Different geographic human environments and developing history, the unique traditional architecture culture came into being in China and European. This paper will study different styles of traditional architecture culture of China and European in different historical period and explore their own abundant cultural connotation in order to better develop our own country’s traditional architecture culture.
Research on the Obstacle-Free Environment in the School for the Blind Based on Sensory and Perceptual Characteristics of the Blind Children
Authors: Wang Fu Rong , Wen Ji Dong , Wang Tao
Published: February 2012

Blind children, visually impaired, need to rely on other sensory and perceptual compensations to get the access to information. So their sensory and perceptual characteristics are different from ordinary people. Therefore, the environment of the school must be suitable for them to perceive and identify things so as to realize unobstructed sensation and perception. This thesis attempts to discuss the perception from three sides, namely, smoothness, identification and security.
The Fissility and the Integration of the City’s History Street and Building Protection - Take City Xi’an and Beijing as Examples
Authors: Wang Tao , Nie Fei , Li Yan
Published: February 2012

City space is one of the matter forms of human civilization, so it’s space order has the same features as the change of culture(maybe there are some factors of lag).The city space order has developed from the single ethic order to the contrary syntheses of many kinds of orders. Because in the interland cities Xi’an and Beijing are both the capitals with largest history (especially they were imperial capitals for a long time in china’s history), they enjoy more notable fissility and contradictory compared with the coastal cities. The point of fissility and contradiction in these two cities is different by reason of the political, economic status and so forth. There is the fissility to some degree in the protection of the important history relic building and street, which have some similarity and difference in it. This article studies the changes of the city space order and the fissility in the protection of the history relic buildings and streets from the point of culture or in the words “humanism”. On the basis of the culture integration, the author put forward the integration of history buildings and streets protection, which would direct us reconstruct and protect our old city more reasonable.
The Importance of Field Investigation in the Architectural and Interior Design
Authors: Hong Sun
Published: February 2012

The paper studies on the method and way of improving architectural and interior design level from the point of view of field investigation in architectural and interior design, states the positive connection and importance between field investigation in architectural and interior design and the architectural and interior design processing, indicates that designer should use professional perspective and method to search and find available factors for architectural and interior design site, and makes an abstraction and summarization. In any case, it is important to respect objective requirement of architectural and interior design site, because architectural and interior design is creative behavior of improving human living environment quality.
Feasibility of Emerging Technologies Based Cogeneration Systems for University of Technology Sydney
Authors: Madadnia Jafar , Dagci Pinar , Lewis Peter , Taskin Talia
Published: February 2012

This paper presents an optimum selection of a co-generation system for heat and power generation at University of Technology Sydney, based on technological, environmental, social and economical factors. Five potential cogeneration concepts were developed based on Internal combustion (IC) engines, External combustion engines including Stirling engine, Organic Rankine cycle (ORC), Kalina cycle, and Fuel-cells, and compared. Organic Rankine Module (ORC) is finally selected. The selected cogeneration offers shorter payback period, lower IRRand net-energy savings, lower Co2 emissions, and higher electric-power generation capacity.
Design, Build and Testing of a Noise-Free Twin Shaft Co-Axial Wind Turbine for UTS Buildings
Authors: Madadnia Jafar , Kala Deepak , Pillai Dheerej , Koosha Homa
Published: February 2012

Management and control of noise pollution in wind turbines are important to integrate wind turbines in building and urban areas. A scaled model of a horizontal-co-axial wind turbine was designed, built and tested in the wind tunnel of University of Technology Sydney (UTS) and its characteristics and aerodynamic-noise emissions were analyzed. The noise reduction capability of the horizontal-twin-shaft wind turbines was compared with wind turbines with the conical entry nozzle (stator), duct-shroud-envelop and vertical shafts. Air velocity, shaft rpm, electric-power generation, noise frequency and amplitude were measured. It was found that up to 15% reduction in the amplitude (dB) of noise emisit from twin shaft wind turbine compared to the single shaft bench mark turbine. The noise analysis performed as a result of these experiments may be used in the design and selection of a building integrated horizontal axis wind turbine for applications at UTS buildings.
Research and Development of Biomechanical Robot for Medical Operation
Authors: Gu Zu Song , Yamamoto Ikuo , Inagawa Naohiro
Published: February 2012

In the surgical operation, the research and development of the surgical robot that has both safety and effectiveness is needed in consideration of the physical mental strain decrease of the surgeon and the patient. Through the observation of the motion of fish, it has been found that fish swim efficiently using flexibility of pliable fins, giving the actuator the name of flexible oscillating fin propulsion system. The author proposed the application to the realm of healing the elastic vibration wing promotion system. The flexible forceps robot for the surgical operation of a vibrating flexible fin promotion system application was developed.
Combined Effect of Temperature and Soil Load on Buried HDPE Pipe
Authors: Li Zheng , Zhu Hong Wu , Kong Xiang Ling , Seibi Abdennour
Published: February 2012

HDPE pipes，mostly buried underground, have been widely used in industry. Much research has been done on pipe property changing with time or temperature. But thermal expansion of pipe was neglected. This paper investigated the combined effect of soil load and temperature on HDPE pipe with introduction of thermal expansion. Stress and deflection variation with time of buried HDPE pipe were studied in ABAQUS. Result showed pipe temperature had great influence on buried HDPE pipe performance. Thermal stress was much larger than stress caused by soil load. And thermal expansion prevented pipe from deflecting due to soil load, which can protect HDPE pipe in applications.
A Spectral Element Method for the Numerical Simulation of Axisymmetric Flow in Czochralski Crystal Growth
Authors: Qiu Zhou Hua , Zeng Zhong , Mei Huan , Yao Li Ping , Liu Qiu Ming
Published: February 2012

In this paper, a spectral element method (SEM) is applied to simulate the axisymmetric flow in Czochralski crystal growth. The coordinate singularity for 1/r at r=0 is avoided by using the Gauss-Radau type quadrature points for the spatial discretization. The SEM solver is validated by its application to the benchmark problems suggested by Wheeler [1]. The stream function is solved by an artificial Poisson equation with the present method. The results show that it agrees well with available data in the literatures.
Effect of Milling and Calcium Phosphate on Mechanical Properties of Nanostructured TiNbMo/CPP Biocomposites
Authors: Woo Kee Do , Park Sang Hoon , Kim Ji Young
Published: February 2012

Ti-6Al-4V ELI (Extra Low Interstitial) alloy have been widely used as alternative bone due to its excellent biocompatibility, although it still has many problems such as high elastic modulus and toxic. Therefore, biomaterial with low elastic modulus and nontoxic has to be developed. In this study, the raw materials which are nontoxic elements such as Nb and Mo were mixed and milled in a mixing machine (24h) and a high energy mechanical ball milling machine (1h, 4h and 8h) respectively. Ti-Nb-Mo-CPP composites were fabricated by spark plasma sintering (SPS) at 1000°C under 70MPa using mixed and milled powders. The effects of CPP contents and milling time on biocompatibility and mechanical property have been investigated. By X-ray diffraction (XRD), chemical reaction during the sintering was occurred and revealed new phases, Ti2O, CaO, CaTiO3, and TixPy. Vickers hardness of composites increases with increase milling time and addition of CPP contents. Biocompatibility of CPP added Ti-Nb-Mo alloys were improved.
Basic Study on the Seismic Response of the High-Speed-Moving Vehicle Considering Passengers' Dynamics
Authors: Shintani Atsuhiko , Ito Tomohiro , Iwasaki Yudai
Published: February 2012

The stability of the high-speed running vehicle subjected to seismic excitations considering passengers' dynamics are considered. A vehicle consists of one body, two trucks and four wheel sets. A passenger is modeled by simple two degree of freedom vibration system. The equations of motion of the vehicle and passengers are calculated by Lagrangian equation of motion. Combining two models, the behavior of the vehicle subjected to actual seismic input considering passengers' dynamics are calculated by numerical simulation. The stability of the vehicle is evaluated by using the risk rate of rollover. We investigate the possibility of the rollover of the vehicle. We focus on the effect of the dynamic characteristics of the human and the number of the passengers when the vehicle is subjected to the seismic excitation.
Wave Propagation Characteristics of One Dimensional Rod Phononic Crystal
Authors: Liu Xiao Jian , Fan You Hua
Published: February 2012

The elastic wave band structures of the one dimensional rod phononic crystal are studied by the lumped-mass method. For the infinite periodic structure, the accuracy of numerical results is influenced by the number of discrete mass. The initial and stop frequecy of the first bandgap need different number of discrete mass to achieve calculation accuracy when two materials composed phononic crystal at different volume ratios. For the finite structure, the different arrangements make different width of the attenuation area at periodic load. The width of the bangap exhibits largely when the external load acts on the matrial with lower denstiy and elastic modulus in front of the higher density and elastic mudulus material.
Cableless Magnetic Actuator Capable of High-Speed Movement in Pipe by New Type Propulsion Module
Authors: Izumikawa Tomohiro , Yaguchi Hiroyuki
Published: February 2012

The present paper proposes a novel cableless magnetic actuator that exhibits a very high thrusting force and is capable of high speed locomotion in a thin pipe by using new type propulsion module. The magnetic actuator is moved according to the vibration amplitude and elastic energy of a mass-spring system due to mechanical resonance energy. The proposed actuator contains an electrical inverter that directly transforms DC from button batteries into AC. The electrical DC-AC inverter incorporates a mass-spring system, a reed switch and a curved permanent magnet that switches under an electromagnetic force. Experimental results indicate that the proposed actuator is able to move upward at a speed of 51 mm/s by the power provided by 8 button batteries when pulling a 10 g load mass. This cableless magnetic actuator has several possible applications, including small pipe inspection and maintenance.
Virtual Machining Technology Based on UG and VERICUT
Authors: Wu Yu Hou , Gao Qiang , Zhao De Hong
Published: February 2012

Created HTM50200 shaped stone processing center’s virtual model Based on VERICUT and UG software, in accordance with the actual parameter, configuration component tree, and machine tool library, and system parameter of the machine, and simulate the processing program. On the exists of interference, collision, had cut, and owed cut, modify the errors, analysis the surface quality, if it don’t meet the processing precision requirements program the region again, make it eventually reach the requirements standard. According the cutter, physical properties of work materials to calculate the optimal cutting parameters, make the program optimize on the feed rate and spindle speed. In the practical application of simulation technology and manufacturing processes, reduce the risks in traditional test cutting process and personnel's labor intensity, save the machines’ take up time, improve the efficiency of use.
Transition Probability Analysis for Piezoceramic Materials
Authors: Fang Yun Mei , Fei Jun Tao
Published: February 2012

In this paper, transition probability analysis for piezoceramic actuators is presented. Nonlinear constitutive equations and resulting system models quantifying the non-linear and hysteretic field-displacement relations inherent to piezoceramic elements are developed. In the model development, lattice-level energy relations are combined with stochastic homogenization techniques to construct non-linear constitutive relations which accommodate the piezoceramic hysteresis. Simulation results demonstrated the effectiveness of the theoretical model development using transition probability analysis.
Developing the Wastewater Monitoring System Based on Ontology
Authors: Yi Jian Jun , Fan Jian Gang , Jiang Hui , Cheng Ying , Chen Shao Li
Published: February 2012

Real time Monitoring system is an important gurantee for the water quality. SDI-12 water sensors are used to monitor the water conductivity, temperature, dissolved oxygen, Ph, turbidity and other parameters in this paper. The signal of the wastewater is collected to the ARM chip, and then it is processed by the chip. The preliminary result will be displayed on a handheld terminal in real time. The handheld terminal also integrates the function of remote data transmission, which can transmit the original water data to a central server for storage via GPRS. Central server analyse the wastewater data based on ontology. Meanwhile, the system can also control water detector via remote control, which realizes the unattended effect.
Influence of the Connection Mode for the Vibration Characteristics of a Plate-Shell Coupled System
Authors: Zhao Zhi Mei , Sheng Mei Ping
Published: February 2012

As direct connection of a floor and the cylindrical shell would reduce sound stealth performance of underwater vehicles, an indirect connection mode is proposed. To compare the effect of connection mode on vibration transmission characteristics, two models, directly-connected model and indirectly-connected model, are designed and manufactured to take experiments. Experimental result shows that indirect connection can reduce the vibration energy transmitted from the floor to the shell when these two models have the same structural parameters. Thus indirect connection is more useful to improve the sound stealth performance of underwater vehicles.