bluuebunny/crossref_metadata_2025 huggingface dataset:
Cyclic Behavior of High Strength Steel H-Shaped Beam
Authors: Shinohara Takuma , Suekuni Ryota , Ikarashi Kikuo
Published: June 2012

This study is intended to show possibility of using high strength steel for H-shaped beams with large depth-thickness ratio in the elastic range by conducting loading tests. Test specimens are manufactured with high strength steel of over 700N/mm2 yield stress. Elastic behaviors of such beams under cyclic loading are mainly concerned. In addition, the redundancy and the stability of these beams in plastic range are investigated. It is shown that these beams are useful as seismic design beams although the depth-thickness ratio of H-shaped beams is larger than the limit of current standards in Japan. Also, by referring to a recent study, a new limit value of plate slenderness ratio (depth-thickness ratio of web plate and width-thickness ratio of flange plate) is proposed.
The Research for the Environment Renewal of Red Buildings in the Marshal Zhang’ Mansion Memorial
Authors: Qu Wei , Ha Jing , Song Wen Jing
Published: June 2012

The Red Buildings is going to be incorporated into the Marshal Zhang’ Mansion memorial which exhibits as the State-level key cultural relics protection unit. It will be an important component of the whole exhibition. We based the design on the research of design orientation and function conversion. After studied the history of the buildings and analyzed the differences between the old and the new functions, we made a principle of less change. First, we set two different routes for the visitors and the vehicles in the Red Building. And the visitors’ route was connected whit the tour route of Marshal Zhang’ Mansion memorial closely. Second, we set up one tour axis with four landscape nodes and two landscape axes inside the Red Buildings. They will outstanding original condition and show nice scenes of the whole buildings to visitors.
Interpretation of a Primordial Design “Sha Jai Bang Eco Resort Project”
Authors: Mu Xiao Hu
Published: June 2012

This Sustainable design nowadays is the very popular designing principle in architecture, Varies of methods for saving energy has been developed that gives the possibility to be brought out in the real projects. This essay outlets all kinds of design methods and technologies. Besides, only suitable methods and technologies are chosen and applied to the primordial design of the resort hotel for seniors. Enough outdoor space takes part in the building for senior’s entertainment, communication, sports and so on. All service facilities are about seniors. A healthcare make senior’s life more enjoyable. In conclusion, this resort all serves seniors. Resort is a new supporting seniors model. My resort has done some exploration for the feature and development of this model.
Current Situation and Prospect of the Study on Sichuan Hakka Folk Houses
Authors: Li Jing , Deng An , Chen Ying , Hou Chao Ping
Published: June 2012

The paper systematically summarizes the research achievements of Sichuan Hakka folk houses and puts forward a further research direction. These findings have shown that there are a large number of Sichuan Hakka folk houses in the two Hakka districts in Dongshan of western Sichuan and Longchang of southern Sichuan which have been investigated, surveyed and mapped, etc. From the perspective of architecture to obtain a great deal of first-hand data; moreover, in order to analyze the cultural values of the Sichuan Hakka folk houses, these researches have explored the relationship of the natural environment, climate, production, lifestyle and Hakka folk houses’ architectural image, structure, space, style as well as features between these two districts from the view of anthropogeography and cultural geography; accordingly, the scope of the study on Sichuan Hakka folk houses need to be further expanded in terms of the aspects of local economy, culture, customs, and cultural exchanges between Hakka and the surrounding areas etc.; it’s necessary to reflect on the protection and reuse from the aspects of Sichuan Hakka folk houses’ regional environment, the spirit of place, as well as original intangible cultural assets.
Research on the Relation between Appearances Attributes and Design Factors of Medical Buildings
Authors: Zhou Ji Ping , Bai Pei Fang
Published: June 2012

This article is to explore factors which should be taken into consideration in medical building designing in Shanxi province, through investigation and analysis of the features and outlines of medical buildings in this area.
Analysis on Wall Material and Construction Technology of Traditional House in Yubei Village
Authors: Tai Hui Xin , Yang Yu Lan , Shen Li
Published: June 2012

Through the investigation on the traditional houses of ancient village existing in Yubei village, this paper analyzed and classified the characteristics of the shapes and the technologies of the walls of traditional house and has described the factors that have influenced their generation and development. Basing on the construction technologies, from four different material of the wall such as boulder wall，brick wall，wooden board wall and plaster on bamboo slat wall, it has studied corresponding properties of materials, basic processes, construction principles, art forms and so on and it has researched on some methods and rules of construction of wall of traditional folk house in Yubei village.
The Comparative Study of Ancient Chinese Architecture and Design Psychology of Feng Shui
Authors: Xu Jiang Hua
Published: June 2012

The modern social work, speed up the pace of pressure, the change of the living environment and so on factors, will directly affect the modern people's physical and mental. It is very multifarious feng shui principles, but mostly in the final analysis but "symbol" and "implication" principle. From the Angle of design psychology research such problems, the more realistic and profound significance.
The Effect of Grinding Aids on Grinding Portland Cement with High Proportions of Slag
Authors: Sun Su Zhen , Yu Yan Mei
Published: June 2012

The paper brings information on grinding cement with high proportions of slag in the presence of amine alcohols grinding aids. Grind respectively blended cement with 20%, 50%, and 80% granulated blast furnace slag and analyse the evolution of the specific surface area at various grinding times and grindability. Results show that the specific surface area of belended cement depends on the content of slag and the type and ratio of grinding aid, and grindalility of the cement is also affected by grinding aids.
The Potential of Cloud Computing Technology for Construction Collaboration
Authors: Fathi Mohamad Syazli , Abedi Mohammad , Rawai Norshakila
Published: June 2012

A major barrier to successful construction project delivery has been the fragmentation and poor relationships existing between players in the construction industry. This significant issue has exerted a negative influence on project objectives, especially those which are predetermined, such as time, specified budget and standard quality. Construction projects require intensive efforts and processes, which it is often a challenge to provide to parties within the construction industry, to access accurate information and efficient communications. The purpose of this paper is to investigate the construction collaboration tools along with concepts of context-aware computing and cloud computing. The findings in this research are based on a thorough review of the comprehensive literature on IT, computing and construction. Consequently, this study sets out to introduce and develop the concepts of potential innovative collaborative tools, such as Context-Aware Cloud Computing Information Systems (CACCIS), for facilitating the construction supply chain processes and networks by enhancing the opportunities for achieving better competitive advantages. Firstly, it is hoped that this study will lead to improved construction collaboration to enhance the competitive advantages and opportunities for the internationalisation and globalisation of the construction industry. Secondly, it presents an effective method to provide new insights into the process of integration and, most significantly, to improve the productivity, efficiency and effectiveness of the construction industry.
Embodied Environmental Burdens of Wood Structure in Taiwan Compared with Reinforced Concrete and Steel Structures with Various Recovery Rates
Authors: Li Sheng Han
Published: June 2012

This paper investigates environmental impacts of wood structure, reinforced concrete (RC) structure and steel structure in Taiwan in terms of embodied energy consumption and embodied CO2 emissions. The methodology of life cycle assessment (LCA) is applied to the analysis in building materials both from ‘cradle to gate’ perspectives and from ‘cradle to cradle’ perspectives. The results first show that wood structure with the resource from the USA has the least environmental impacts. In addition, as far as material recovery phase is concerned, the substitution effect of wood structure instead of RC and steel structure has an obvious increase as the recovery rate reaches more than 60%. To summarise, wood structure is beneficial for our environment not only in the construction phase but also in the material recovery phase.
Construction of a New Spatial Pattern of Industries under the Industrial Transfer in Xi'an Metropolitan Area
Authors: Pan Yong , Chen Xiao Jian
Published: June 2012

Under the development background of Xi’an international metropolitan area, the industries spatial distribution patterns facing with Xi’an and its surrounding areas change greatly. The authors explore the current industries distribution characters in Xi’an based on the industrial spatial transfer perspective and empirical analysis. Then the authors discuss the potential holding spaces for industrial transfer based on the main component analysis method. Finally, the new pattern and some countermeasures and suggestions are put forward.
Impacts and Adaptation of Climate Change on Urban Economic System: A Perspective from the Urban Planning
Authors: Wei Yan Qiang , Fang Yi Ping
Published: June 2012

Climate change has a significant impact on the environment and is expected to increase the frequency and intensity of nature disaster and create new hazards (e.g., rise in sea level). As densely populated and resource-intensive regions, cities will experience the enhanced heat island effect, flooding or water scarcity as a result of extremes in rainfall, and severe storms may devastate entire settlements. In the face of a projected rise in the frequency and severity of nature disasters due to socio-economic developments and climate change the question arises of how to adapt to and ameliorate impacts of natural disasters. This paper provides some insights into this subject from an urban planning perspective and takes a review on the aspects of climate change impacts on urban economics, based on the practices of mitigation and adaptation experiences, some strategies of adaptation are provided and discussed at last.
Study on the Features and External Factors in China’s Urban Fringes — The Case of Suzhou-Wuxi-Changzhou Region
Authors: Lei Cheng , Fan Ling Yun
Published: June 2012

With the rapid development of Urbanization, China’s urban fringes are faced with a new development background and have new features which are different from the ones the domestic scholars summarized in early years. This document based on a better knowledge of the new development background of urban fringes in Suzhou-Wuxi-Changzhou Region, concludes two external factors, summarizes features of fringe evolution in an empirical perspective and proposes prospect of future research directions.
Study on the Protection and Renovation Mode of Blocks with Historic and Cultural Value with Recent Period Lifen House “Xian’anfang Neighborhood” in Wuhan as an Example
Authors: Jiang Bo
Published: June 2012

This Article focuses on the study of how to carry out effective protection, planning, development and renovation facing the streets and blocks with historic and cultural value during the process of urbanization, takes the recent period Lifen House “Xian’anfang Neighborhood” as an example, puts forward the idea and strategy for protection and renovation of streets and blocks with historic and cultural value, and elaborates on the method for protection and planning of Lifen House and on the mode for gradual renovation.
The Study on Urban Planning Based on 3D City Model
Authors: Pang Chun Yu , Yin Qing
Published: June 2012

One of the most important developments in GIS technology is the ability to extend two-dimensional analytical functionality into the third dimension. The approach of modeling objects for three-dimensional (3D) descriptions of the real world has been very useful for some urban applications such as planning, construction, management and representation of the urban sceneries. 3D city model is basically a computerized model or digital model of a city. Normally 3D city model delivers a true picture and real scene of the ground and enable the planners to view the locations of services and real places in an intuitive and use-friendly way. And there are many useful applications of 3D city model in urban planning analysis, noise propagation simulations and flood simulations. Nowadays, 3D city models play a more and more important role in GIS.
Research on the Space Linking up Changsha-Zhuzhou-Xiangtan under the Background of Environmental-Friendly Society
Authors: Hu Dong Xiang , Wu Yue , Li Xin Hai
Published: June 2012

The urban-rural integration is suggested to be used in the urbanization of Changsha-zhuzhou-Xiangtan (CZT),according to the characteristics of the space linking up three cities on the basis of the existing research results . the landscape pattern of the space should be small cities-towns-forest land-cropland -water area by insisting on the rule of people-oriented and the natural environment least destroyed.The space should be environment-friendly that the model of the big city construction doesn’t be totally copied.At last,the suggestions on the basic characteristics of the space pattern are put forward
Application of the Golden Section and Golden Rectangle to Fountain Location in Landscape Design
Authors: Xu Ling , Yang Chuan Gui , Wei Tong Chun
Published: June 2012

The paper mainly conducts the study on the application of The Golden Ratio in landscape design through the planning of Liuqing Park. Exploring firstly the popularity of The Golden Ratio in plants, animals, and human, and as well as the exploitability in art, architecture, and formal garden design, it makes creative designs to the determination of a fountain and the path annexed to the minor roads. Under the guide of The Golden Ratio, detailed drawing methods to locate the position and the paths have been given, and to be a good try to combine mathematics and landscape design.
Technique Development of Recycling and Utilizing Waste Concrete as Building Material
Authors: Qian Da Xing , Yun Ying Wei , Jang Il Young , Park Woo Young
Published: June 2012

In this paper shucking technique is developed to improve the performance of recycled coarse aggregate concrete. Comparison test has been done to demonstrate the good performance of shucking recycled coarse aggregate concrete than that of common recycled concrete. Simultaneously recycled fine aggregate concrete and recycled finely grinded admixture are extracted and studied too. Results show that this new technique can not only improve the performance of recycled material and enlarge recycled material type, but also make waste concrete to be reused completely.
Factors Affecting Implementation of Resource Scheduling in Indian Construction Projects
Authors: Venkatesh M. Paranthaman , Malathi Balasubramanian , Umarani C.
Published: June 2012

This paper describes the factors affecting resource based scheduling and the barrier/constraints against the implementation of resource based scheduling in Indian construction project. However the traditional methods such as critical path method and program evaluation and review technique are based on time but actual work is not completed on time. Hence it becomes essential to follow a resource based schedule which is based on actual availability of resource to meet the project deadline. This paper mainly focuses the resource oriented scheduling techniques and it is helpful to investigate the implementation of scheduling, type of scheduling adopted, method of scheduling, status of scheduling implementation in various construction firm. The questionnaire survey was conducted to determine the factors affecting resource oriented scheduling implementation and barriers/constraints against its implementation in the Indian construction project. The collected data was analyzed using statistical tool. Prioritization of the factors by frequency analysis and average index method was carried out. The barriers/constraints against implementation of resource scheduling were identified and presented. Suitable suggestions for the Indian construction companies were given to promote and motivate the professionals entering the firm at the initial stage about the concepts of resource scheduling so that they have a genuine commitment in the implementation of resource scheduling.
A Fuzzy Evaluation Method of Construction Project Risk Based on Cooperation
Authors: Gao Yun Li , Wang Qing Chun
Published: June 2012

The cooperation of project participants affects the information communication and impacts on project risk. A fuzzy evaluation method of construction project risk based on cooperation was presented. Because the effect of the same risk factor to project objectives was distinguishing, each risk factor had different weight. The cooperation of project participants was considered as the influencing factor to project objectives. The total risk rating of project could be calculated by the fuzzy reasoning method. The new method is practised to be effective in a actual project.
The Analysis of Game Behavior between the Management Contractor and the Construction Contractor in Management Contracting Mode
Authors: Jiang Lin , Li Shu Jing , Ren Zhi Tao
Published: June 2012

The management contracting mode is a new construction pattern of construction projects, and has been applied more and more widespread. To guarantee the project implemented smoothly, the Management Contractor (MC) needs to supervise the construction contractor's opportunism behavior. The behavior was analyzed between the MC and the Construction Contractor (CC) by using the gaming model to discover how their different behaviors influenced the final results. The purpose is to give some advice for the MC.
Study on Defensiveness of Ancient Dwellings in High-Chair Village of Huitong County of Hunan Province
Authors: Luo Ming , Liu Su
Published: June 2012

High-Chair Village is located in the south of the Wuling Mountain with a complicated living environment. But it has never undergone any wars, fire and other major damage since Ming dynasty. It is a large-sized and relatively intact residential building of architectural complex of Ming and Qing dynasties. Defensiveness plays an important role in traditional residences. This paper analyses its defensive tactics and techniques full of geographical characteristics from three aspects, namely village location, architectural form and spatial organization in order to learn the essence of creation from the ancient people.
The Development of Analysis of Relationship between Built Environment and Travel: A Review and Discussion
Authors: Tan Xiao Yu , Deng Wen , Zhu Nuo
Published: June 2012

This study aims to find out the development tendency of relationship analysis of Built Environment and Travel over decades, especially in the United States, which is a very important and meaningful work. The review of develop tendency in the developed countries such as US will benefit the similar work in China. Particularly, we can know what stage china research in and what we can do something innovative to improve the built environment-travel relationship research in China.
Research on Mode Selection and Layout of Parking in the New Residential Quarter
Authors: Ma Hui , Liang Guo Hua , Liang Su Zhi , Liu Hong Ying
Published: June 2012

In order to make new residential quarters’ parking mode selection and layout become more rational which can response to the parking pressure bring by the growing private car to the residential quarter.By analyzing the factors of affecting parking model and characteristics of parking demand, studying on the characteristics and applicability of various parking models, derive the method of parking mode selection and allocation according to parking land use. Layout of the parking based on the shape of land, so as to meet most of the parking demand. The results show that the method is feasible to mode selection and layout of parking.
Applied Research on Wood Epidermal Interface of Cultural Building
Authors: Gao Bo , Gao Jie , Li Min , Zhao Juan
Published: June 2012

This thesis is to introduce the presentation and application of wood, the traditional building material, as one of the epidermis materials of contemporary cultural architectures. It will clarify materials types as wood architecture epidermis materials and the creating tendency of interface presentation, as well as its treatments and protections in architecture application. This intends to provide technical and theoretical supports to methods of emergence of appearance type of new wood structure architecture material.
Review on Inventory Controlling of Building Materials Supply Chain from Uncertainty Demands in Civil Engineering
Authors: Yang Bin
Published: June 2012

Inventory control is a necessary strategy that enterprises use to offset the effect of uncertainties in manufacturing, supply and demand. Normally, probability distribution is used to analyze the uncertainty problems, however, this analysis can’t be completed with inadequate data, resulting in an increase in inventory costs. The paper establishes inventory cost models of single supply chain member under uncertainty demands and applies Simulated Annealing Algorithm to imitate the models in 52 weeks to seek for the optimal speaking for amount and anew speaking for point so that compares the difference of supply chain total inventory cost and the sufficing rate of order for goods between independently and collaborated controlling strategy in supply chain, and in order to provide the necessary theoretical supports for the enterprises to establish supply chain partnerships and possibly improve the supply chain capability of providing external integration.
Development Patterns and Approaches of Low-Carbon Economy in Jiangxi Province
Authors: Zhang Qiu Gen , Shen Wen Qin , Chen Su Hua , Wei Li An
Published: June 2012

Low-carbon economy is becoming the main trend of economy developing for all countries. Jiangxi Province has a preliminary basis and advantage to develop low-carbon economy. The developing pattern and approaches of low-carbon economy in Jiangxi province were put forward which includes developing low-carbon industry and constructing low-carbon society. The pattern of low-carbon industries include enterprise model of clean production, industry model of low-carbon industrial, low-carbon agriculture, low-carbon services and eco-tourism, regional model of low-carbon industrial park. The patterns and approaches of low-carbon society include town model of low-carbon operation, the village model of low-carbon construction, residents model of low-carbon living.
Classification of the Urbanization Types in the Yangtze River Delta
Authors: Yang Li , Zhang Wei , Xu Juan
Published: June 2012

The Yangtze River Delta was selected as a case study to evaluate urban sustainability based on the index system, which was composited of economic development, social development, resources and environmental press. Factor analysis was applied to extract principal component. Then based on the factor scores of the principal components extracted from three aspects, four urbanization types are obtained.
The Control System Design of Copper Sleeve Press-Fit Machine
Authors: Ma Xin , Li Hong Li
Published: June 2012

The copper sleeve press-fit machine is a kind of device applied in automobile parts processing. The machine is used to press nine copper sleeves into a mold with nine holes. An automatic control system based on PLC is designed. CPU 224 of Siemens S7-200 series PLC is adopted as the core controller. The machine can be operated by either the human-machine interface or the pushbutton panel. There are all ten cylinders in this machine. The operation sequence and interlock protection of the ten cylinders are controlled by the PLC. In this system there are some necessary fault alarms and protective measures. The machine can be operated in manual mode or automatic mode. The press-fit machine is designed to operate simple with the high degree of automation and reliability, thereby saving work force and enhancing the efficiency of automobile parts production.
Seismic Performance of High Titanium Heavy Slag High Strength Concrete Columns
Authors: Li Xiao Wei , Li Xue Wei , Yuan Xin
Published: June 2012

For expedite the development of high titanium heavy slag concrete, eight high titanium heavy slag high strength reinforced concrete (HTHS-HSRC) scale model column are studied. The eight HTHS-HSRC model columns are tested under reversed horizontal force. Primary experimental parameters include axial load ratio varying from 0.3 to 0.5, volumetric ratios of transverse reinforcement ranging from 1.38% to 1.56%, strength of high titanium heavy slag high strength concrete varying from 55.9 to 61.6 N/mm2 and configurations of transverse reinforcement. It is found from the test result that HTHS-HSRC model columns provides comparable seismic performance to those usually used reinforced concrete column in terms of member ductility, hysteretic and energy dissipation capacity. Primary Factors of Displacement Ductility of Model Columns are also discussed.
Effect of Naphthalene Compounded Superplasticizer on Strength and Shrinkage of Ready-Mixed Concrete
Authors: Wang Yu Fei , Yan Han Dong
Published: June 2012

Superplasticizer is widespread applied in the ready-mixed concrete in China. In the specific engineering, it is not only has the requirement of water-reducing ratio for superplasticizer, but also the superplasticizer has to meet the demand such as early-strength, air-entraining, retarding and so on. In current, the naphthalene compounded superplasticizer is conducted on the basis of the FDN modification. This paper selects two kinds of representative naphthalene compounded superplasticizers, one is the setretarder superplasticizer (WRA1), and the other one is the early strength-air entraining-retarding superplasticizer (WRA2). The effect of performance on neat cement paste, mortar and concrete which mixed with the two admixtures are compared with the benchmarks (not mixed with water reducing agent) and mixed with FDN. Through the analysis and comparison of the test data, the general rules of the naphthalene compounded superplasticizer to concrete strength and shrinkage are put forward in this paper. Also, according to those rules, it poses the concrete problems to be noted in the production. This may have guidance for reducing the early cracks of ready-mixed concrete.
Behavior of High Performance PVA Fiber Reinforced Cement Composites under Uniaxial Compressive Load
Authors: Li Yan , Liu Ze Jun
Published: June 2012

Abstract. Based on an extensive experimental program, the paper studies the behavior of High Performance Fiber Reinforced Cement Composite (HPFRCC) under Uniaxial compression. The experimental parameters are: PVA fiber content by volume, fly ash and silica fume content. The compressive strength, peak strain as well as compressive stress-strain curves are obtained. The test results reveal that PVA fibers can greatly improve plastic deformation ability of HPFRCC, especially have significant impact on ductility after the peak stress, though fiber content has small influence on compressive strength. With the increase of fly ash content, peak stress of HPFRCC decreases, but toughness increases. 10% silica fume content has not obvious effect on compressive strength for HPFRCC with large quantities of fly ash , but leads to less ductile behavior.
Research on Properties of Low Grade Cement-Based Composite Materials Modified by Silica Fume
Authors: Xu Zi Fang , Zhang Ming Xu , Li Jin Hua
Published: June 2012

In order to notably improve the mechanical properties and durability of low-grade cement-based material, superfine silica fume was used to modify the cement-based composite based on special perfomance and effects of nano powder. The mechanical performance and durability were investigated.Then the phase compositions,microstructure and morphologies of as-received cement-based composite were studied by X-ray Diffractometer、TGA-DTA and SEM. The results show that： the best formula of raw materials is 1:1:0.025:0.015, and hydration can be accelerated and increasing of hydration products is observed after modification. In the hardened cement matrix, microstructure is very compacted and C-S-H gel forms densed structure, so the structure defect is notably reduced. This means that both strength and durability of cement-based composite are notably improved by the addition of superfine silica fume.
A study on polarization properties of the carbon black modified 0-3 cement-based piezoelectric composites
Authors: Li Mi Mi , Huang Shi Feng , Xie Shi Hui , Zhou Mei Juan , Cheng Xin
Published: June 2012

A carbon black modified 0–3 cement-based piezoelectric composite was fabricated with piezoelectric ceramic [0.08Pb(Li1/4Nb3/4)O•0.47PbTiO3•0.45PbZrO3], sulphoaluminate cement and carbon black by compressing technique. The influences of poling conditions on the piezoelectric and dielectric properties of the composites were investigated. The results show that the higher poling electric field, the longer poling time and the higher poling temperature, the composites have the higher piezoelectric strain factor d33, piezoelectric voltage factor g33, dielectric constant εr and dielectric loss tanδ. At the same time, the carbon black modified composites are polarized more easily than the unmodified composites, and have better piezoelectric and dielectric properties. Meanwhile, the optimum poling conditions were obtained, and the optimum poling field E, poling time t and poling temperature T were 4 kV/mm, 20 min and 80 °C.
Influence of Sustained Load on Tension Behavior of Waterproofing
Authors: Shu Zhi Jian , Yu Chun Chun
Published: June 2012

A simulation experiment on PVC waterproofing under sustained load and evaluated the results ,to find out the waterproofing tensile property change at 70 °C. 1) The tensile property of PVC waterproofing increased with ratio of initial elongation at 70 °C. when the ratio of initial elongation is 57.4%, the ratio of rupture elongation decreased more than 70%,and the Average of tensile strength increased 71.8%。2) Between one and seven days, the time duration had little influence on tensile property of PVC waterproofing. at 70 °C
Effect of Calcination Temperature on Pozzolanic Reaction of Calcined Shale Mortar
Authors: Cheng An , Chao Sao Jeng , Lin Wei Ting
Published: June 2012

This study investigated the influence of calcination temperature on the pozzolanic activity of shale. Calcination temperatures of 500 °C, 600 °C, 700 °C, 800 °C, and 900 °C were used. The calcined shale powder was then passed through a No.200 sieve before being used to replace 20% of the cement in standard mortar samples. X-ray fluorescence spectrometery (XRF) was used to analyze the chemical composition of the calcined shale. In addition, the effects of replacing mortar with calcined shale were also examined with regard to setting time, pozzolanic activity, compressive strength, ultrasonic wave velocity, and the water absorption of the mortar. The test results demonstrate that the chemical composition of SiO2+Al2O3+Fe2O3 exceeded the 70% required by ASTM C618 specifications. The strength activity index (SAI) of calcined shale at 7, 28, 56 days exceeded 75%. At 28 days, the SAI values of samples produced with shale calcined at 700 °C and 800 °C exceeded 99%. After 28 days, the SAI, water absorption, and ultrasonic wave velocity values were nearly identical to those of control samples produced using only cement. Among all shale samples, those calcined at temperatures between 700 and 800 °C demonstrated the highest pozzolanic activity.
Experiment on the Bonding Performance of BFRP Bars Reinforced Concrete
Authors: Jiang Shi Yong , Ye Yong , Fei Wei
Published: June 2012

Through the pull-out test methods, the concrete strength、reinforcement diameter Basalt Fiber Reinforced Plastics Bars、the anchorage length、 stirrup rate and other factors on the bonding properties of the BFRP reinforced concrete is analyzed. The BFRP bars and reinforcing steel bars bonding properties is compared. BFRP reinforced concrete bond failure mode has two types .As the concrete strength increases, the bond strength of the BFRP reinforced concrete increased. With the increase BFRP bars diameter and shear lag relationship, the cohesive force of the BFRP reinforced concrete decrease accordingly. And the failure modes of the shape of the BFRP reinforcement concrete in BFRP bonding properties with a big impact for the specimens’ configuration stirrups on the ductility. When BFRP bars loading under the same load level, the end of the slip is greater than the free end slip.
Study on Residential Building Energy-Saving Comprehensive Evaluation System in Hot Summer and Cold Winter Zone Based on AHP
Authors: Tu Jin Song , Li Rui Xia , Qin Feng Yan
Published: June 2012

A new evaluation method was proposed for hot -summer and cold -winter zone, which based on domestic and foreign energy-saving standard and evaluation technology as well as the current situation. The residential building energy-saving system evaluation model was established by referencing the AHP method model, its weight of each evaluation index came from the experts’ investigation method, and was modified by entropy technology to index. The results show that, this method can not only simplified the qualitative and quantitative evaluation index quantification process but also improve the whole evaluation system operability. At last, we made a empirical analysis and evaluation of comprehensive of a small unit residential in Lu'an, the result shows that although the residential building energy conservation in the basically meet the national building energy efficiency requirements,it still needs to be improved in some other aspects.
The Cooperation and Coordination Game of Constructing Low-Carbon Green Oil Port
Authors: Fan Hou Ming , Dong Guo Song , Zhang Xiao Nan
Published: June 2012

Constructing low-carbon green oil port is not only beneficial to change the present situation of Chinese oil port which has pollution problems and many risks, but also to increase the economic efficiency and improve the ability of sustainable development of low-carbon green oil port. While coordinating the cooperative relationship between each related enterprises participated in the construction of oil port low-carbon green oil port, is the important segment to build a low-carbon green oil port. This paper adopted the static game model under the asymmetric circumstance to research cooperative relations of low-carbon green oil port between the oil port enterprises and other enterprises and achieved good research achievements. The study results can provide for oil port supply chain related enterprise whether you choose cooperative strategy with the theory basis and the reference for decision.
Comparison with Determing Methods of Organic Matter for Sludge Compost in Different Treatments
Authors: Yang Jian She , Li Pei , Ding Ying
Published: June 2012

the organic matter contents in deferent treatments of the sludge compost were determined by using Comparison the potassium dichromate with the burning method ,in order to understand changes of the organic matter contents for the Sewage sludge compost in adding different treatments of Fermentation accelerant and nutrient agents . The results showed as following: 1, the organic matter content for the sludge single composting at the end (53.36%) was lower 8.65% than at the beginning of composting(58.41%), the other corresponding treatment in composting all declined 12.37% -7.98%, indicating that the sludge compost would made The organic matter content are significantly reduced. 2, adding Fermentation accelerant into the sludge from 8% to 40%, the organic matter contents of their composting at the end increased more 2.94% ~ 19.73% than that of the single sludge compost. the highest organic matter content occurred in treatment 6 (sludge +40% Fermentation accelerant, 63.89 %). 3, at adding 24% Fermentation accelerant in the sludge ,as adding 8~32% of nutrient agents, the organic matter contents at the end of composting have been increased more 10.48%, 7.46%, 6.39% and 2.42% than the sludge single treatment , indicating that the sludge Adding 24% Fermentation accelerant and adding more nutrient agents can significantly improved the level of the organic content. 4, the organic matter contents for the sludge adding 30-50% nutrient agents have been declined 4.10% ~ 6.90% than the single-sludge compost treatment. 5, comparison of two measurement results showed that the potassium dichromate method is More advantages in measuring organic matter content of sludge compost than the burning method.
The Networked City and the Sustainable Packaging Design
Authors: Li Yang , Yang Da Yu , Gu Wen Juan
Published: June 2012

The networks of different types and scales in the modern cities can be integrated into larger network complexes serving multiple functions. The networked compact city can be a sustainable urban form in China. And it will bring hope to deal with complicated problems which emerge one after another during the procedure of urbanization; for example, the problems of landfill and pollution problems. In the traditional model, more than one-third of landfill waste is attributable to packaging. The concept of the sustainable packaging being discussed in this paper is to reconstruct the functions of the packaging and to build an independent packaging design centre that can benefit both the suppliers and users of the packaging. It consists of the networked cities’ interactive medium, information systems, and logistics systems; and consumes less energy, natural resources and creates less waste.
A Study on the Earth Pressure of Top Culvert of High Embankment
Authors: Zhou Shi Sheng , Sun Xi Meng , Peng Jun , Lv Jia
Published: June 2012

Based on the extensive research and analysis of actual condition of top culvert of high embankment, a calculation theory for the earth pressure of top culvert was presented. The theory could optimize the structure design for culverts, and reduce the waste of resource. First, based on the simplified assumption of the stress of soil on the top culvert and the analysis of single unit of the load on the top culvert, the calculation formula of earth pressure on different position of top culvert was presented by theoretical derivation. Then, to verified the results by using scaled test model and ABAQUS finite element software. Through the comparison with the traditional calculation theory and finite element simulation, we could prove that the calculation theory is more tallies with the actual situation of the earth pressure on the top culvert.
Load Analysis of Transversely Prestressed Continuous Concrete Pavement with Oblique-Reinforced
Authors: Cai Hua , Jiang Ke , Miao Jian , Liao Jian Gang
Published: June 2012

Aiming at the problems of the concrete pavement transverse joint, and the characteristics of prestressed concrete pavement and continuously reinforced concrete pavement, a transversely prestressed continuous concrete pavement with oblique-reinforced is presented. ABAQUS software is adopted to establish respectively two three-dimensional finite element models of plain concrete pavement and transversely prestressed continuous concrete pavement with oblique-reinforced for calculating mechanical behavior under the standard load. The results show that, with a concrete pavement slab transversely prestressed, a finite prestressing force exist in longitudinal by bonding among oblique-reinforced and concrete, and there isn’t tensile stress under the load, so the possibility of slab breakage due to tensile stress is low. Due to its excellent performance, in addition its great load-carrying capacity and overall stability, the investigation is valuable for the research of seamlessly prestressed pavement.
Bonding Characteristics Analysis of Ultra-Thin Overlay of Asphalt Pavement Layer
Authors: Yang Yan Hai , Liu Zhuo , Gao Jing Xiong , Zhu Guang Shan
Published: June 2012

It researches ulter-thin overlays and bonding characteristics of the original road with a large number of laboratory test simulation tools in the thesis. From different spread quantities and different temperature of the adhesive layer shear strength test, you can get the layers of oil content should not be less than 2.5% of SBS modifier, the emulsified asphalt solid content should not be less than 60%. Through factor analysis of sticky layer of oil spread quantities, you can get the ultra-thin overlay layer with voids in asphalt mixtures VV and significant influence of the original pavement structure depth TD on interlayer bonding properties, the design range of appropriate void UTFC10 ultra-thin overlay is 8 ~ 12 %, the range of oil spread quantities of sticky layer is 0.8 ~ 1.2 L/m2.
Mechanism of Shallow Slide on Soil Road Cutting Slope during Spring in Seasonal Frozen Region
Authors: Shan Wei , Zhang Cheng Cheng , Guo Ying
Published: June 2012

Through surveyed engineering geologiy and hydrogeology in-situ,summed up the forms of expression of the freeze-thaw slumping of the soil road cutting slope in seasonal frozen region.By way of combined field tests and lab tests, and studied the influence of the stability of side slopes with seasonal temperature,precipitation,varieties of plants on the slope surface,and locations of the slope during sping-thawing period.This study can provide basis for prevention and treatment of freeze-thaw destabilization of soil road cutting slopes in seasonal frozen region.
Research on Relationship between Riding Quality and Pavement Distress of Asphalt Pavement
Authors: Peng Bo , Hu Lu , Jiang Yang Sheng , Yun Liang
Published: June 2012

For asphalt pavement performance evaluation, pavement roughness, which is subject to cracks, potholes, road repairs and so on, is a major factor to influence riding quality. Therefore, riding quality is partly correlated with pavement distress, and the relationship can be transformed to that between pavement roughness and distress rate. However, this relationship is not clear, and not reflected in existing evaluation models. Thus, correlation analysis and non-parametric test of independent samples were applied in this paper to find that, international roughness index and pavement distress rate are significantly different due to different grades of roads, then, linear and nonlinear regression were used to analyze the relationships between international roughness index and pavement distress rate for different road grades. Furthermore, original data were processed by logarithmic transformation, radical transformation, exponential transformation and so on, based on which, corresponding relationships were analyzed by linear and nonlinear regression. Finally, best models to describe relationships between international roughness index and pavement distress rate for different road grades were solved out, and corresponding 90% confidence intervals were computed. Research in this paper offers a reference for improving asphalt pavement performance evaluation system and models, which is conducive to further theoretical research and practice.
Study on Performance and Microstructure of SBS Modified Asphalt during Shearing Process
Authors: Kang Ai Hong , Zhang Wu Hong
Published: June 2012

To explore the relationships between the performances and microstructures of modified asphalt, in the tests, one kind of basic asphalt、two kinds of modifiers and four kinds of modifiers content were selected to prepare modified asphalt. The SBS modified asphalt performances such as softening point, viscosity, Rutting Factor G*/sinδ and the corresponding microstructures with different shearing time were analyzed. The results show that different modifiers have different modification effects on the asphalt，but the change trends of performances and microstructures with the modifier content and shearing time are basically the same. It is also found that there is a good relationship between microstructure and macro performance, the average area of the modifier is closely related to the softening point, total area (or area percentage) and the shape factor of the modifier are suitable to reflect the mechanical behavior of modified asphalts.
Study on Critical Fracture Criterion of Asphalt Mixture Based on the Semi-Circular Bending Test
Authors: Liu Yu , Li Jing , Zhang Xiao Ning
Published: June 2012

Crack resistance is an important indicator to evaluate asphalt mixture performance, so the critical fracture criterion of asphalt mixture was deeply studied based on semi-circular bending test under different temperature. The results show that Semi-circle bending test is suitable to evaluate the crack resistance of asphalt mixture; fracture toughness Jc is a more reasonable indicator of the fracture criterion for asphalt mixture than Kc; The fracture toughness calculation model of single specimen built in this paper can simplify the semi-circular bending test operation, and can reduce the number of test specimens.
Cohesive Cracking Simulation of Concrete Using Effective Modulus
Authors: Wang Jin Chang , Zhang Lei , Zhang Jia Min
Published: June 2012

The research methods of Cohesive Zone Model (CZM) are introduced and the parameters of cohesive zone model in ABAQUS software are calibrated based on the cohesive constitutive model determined by the fracture energy. Besides adopting exponential cohesive zone model, this paper applies a bilinear one to simulate the crack propagation of a simply supported single-edge notched concrete beams SE(B) (Mode I) and make comparisons with experimental result. Finally, the results represent effectiveness of the effective modulus and the special advantage in term of failure of fracture based on the cohesive zone model, which is of directly guiding significance for achieving a deep going understanding of crack propagation.
Evaluation of Local Asphalt Binders under Superpave Specification
Authors: Arshad Hussain , Qiu Yan Jun
Published: June 2012

Premature rutting due to high temperatures and heavy loads has been a major distress on flexible pavements in Pakistan. One of the main causes of this early rutting is the available asphalt binders, which are still graded by using penetration grading system. The penetration grading system is based on empirical tests and does not link with performance. To improve the quality of the flexible pavement and to avoid the premature rutting the performance based testings were conducting in laboratory. This study evaluated performance graded (PG) binders for use in pavement construction in the country. Five different penetration graded asphalt binder, typically available in the country were graded according to PG system. The performance grades (PG) for all binders were determined based on DSR and BBR results. The two same penetration grades ARL60/70 and NRL 60/70 have different PG grades. The two different penetration grades ARL60/70 and NRL 80/100 have same PG grade. The results show that the local binders are very soft due to which they performed poorly at high temperatures and prone to severe rutting.