检索结果-南通市图书馆

Analysis of Micromechanical Properties at the Interface of Pre-wet SBS Modified Asphalt Mixture Based on Molecular Simulation Technology

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 103-113页

作者： CHEN Wuxing CHEN Shuang YU Yan ZHANG Jiangyi XU Haiyang GUO Wei school of Mines China University of Mining and TechnologyXuzhou 221000China College of construction Engineering Jilin Uni-versityChangchun 130026China

The pre-wetting of aggregate surface is a means to improve the interface performance of SBS modified asphalt and *** effect of pre-wetting technology on the interaction between SBS modified asphalt and aggregate was analyzed by molecular dynamics *** diffusion coefficient and concentration distribution of SBS modified asphalt on aggregate surface are *** simulation results show that the diffusion coefficient of the aggregate surface of SBS modified asphalt is increased by 47.6%and 70.5%respectively after 110#asphalt and 130#asphalt are *** concentration distribution of SBS modified asphalt on the aggregate surface after pre-wetting is more *** to the results of interface energy calculation,the interface energy of SBS modified bitumen and aggregate can be increased by about 5%after *** to the results of molecular dynamics simulation,the pre-wetting technology can effectively improve the interface workability of SBS modified bitumen and aggregate,so as to improve the interface performance.

关键词： pre-wet oil-stone interface interface interaction interface mechanics molecular dynamics simulation

GREEN construction:CONTRACTOR EXPERIENCES,EXPECTATIONS,AND PERCEPTIONS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2007年第3期2卷 106-122页

作者： Yong Han Ahn Annie R.Pearce myers-lawson school of construction Virginia Tech myers lawson school of construction Virginia Tech

As the benefits of green building continue to change the Architecture/Engineering/construction industry and the num-ber of green projects rises in the United States due to market changes,more constructionfirms are gaining experience with this new way of building and changing their expectations for new hires from degree-granting construction *** paper documents a baseline study of contractor experiences,expectations,and perceptions associated with green building conducted in Fall *** study was based on detailed survey results from 87 different companies re-cruiting from three major university construction programs in the eastern United States(Auburn,Purdue,and Virginia Tech).The survey collected data regarding current experience levels and capabilities of companies with regard to green construction,corporate expectations of new hires in terms of green construction knowledge and skills,and respondent ex-pectations and perceptions about the future of the industry with regard to green *** of this study sup-port the growing importance of green building as a component of the whole construction market and provide a bench-mark against which to measure future changes in the industry over time.

关键词： companies industry construction

Life-Cycle Bearing Capacity for Pre-Stressed T-beams Based on Full-Scale Destructive Test

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Structural Durability & Health Monitoring 2025年第1期19卷 145-166页

作者： Yushan Ye Tao Gao Liankun Wang Junjie Ma Yingchun Cai Heng Liu Xiaoge Liu China construction Seventh Engineering Division Corp. Ltd.Zhengzhou450004China school of Water Conservancy and Transportation Zhengzhou UniversityZhengzhou450001China

To investigate the evolution of load-bearing characteristics of pre-stressed beams throughout their service life and to provide a basis for accurately assessing the actual working state of damaged pre-stressed concrete T-beams,destructive tests were conducted on full-scale pre-stressed concrete *** on the measurement and ana-lysis of beam deﬂection,strain,and crack development under various loading levels during the research tests,combined with the veriﬁcation coefﬁcient indicators speciﬁed in the codes,the veriﬁcation coefﬁcients of bridges at different stages of damage can be *** results indicate that the T-beams experience complete,incom-plete linear,and non-linear stages during the destructive test *** the complete linear elastic stage,both the deﬂection and bottom strain veriﬁcation coefﬁcients comply with the speciﬁcations,indicating a good structural load-bearing capacity no longer adheres to the code’s *** the non-linear stage,both coefﬁcients exhi-bit a sharp increase,resulting in a further decrease in the structure’s load-bearing *** to the pro-visions of the current code,the beam can be in the incomplete linear stage when both values fall within the code’s speciﬁed *** strain veriﬁcation coefﬁcient sourced from the compression zone at the bottom of theﬂange is not recommended for assessing the bridge’s load-bearing capacity.

关键词： Pre-stressed T-beams whole process destructive test bearing capacity veriﬁcation coefﬁcient

GREEN LUXURY:A CASE STUDY OF TWO GREEN HOTELS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2013年第1期8卷 90-119页

作者： Yong Han Ahn Annie R.Pearce Western Carolina University myers-lawson school of construction Virginia Tech

The hotel industry is beginning to implement green design and construction practices,saving energy,water,and resources and thus helping to preserve the *** addition,green building practices also can provide healthy and comfortable indoor environments to hotel occupants including guests and ***,there is the potential for conflict between green building practices and hotel guests’satisfaction and comfort,as the conservation of resources could detract from the quality of a guest’s visitor *** study adopted a case study approach to identify and analyze green design and construction practices that create a green and luxurious environment without damaging the hotels’financial *** in-depth literature review was conducted to identify green design and construction practices,design features of premium hotels,and major design conflicts between the twin goals of green building and a luxurious hotel *** LEED platinum hotels(the Proximity Hotel and the Bardessono Hotel,both in the United States)were selected and data collected on their green design and construction practices,luxurious design features,and operation and maintenance practices from multiple sources,including the owner,designer,contractor,engineer,and LEED *** the perspective of the entire lifecycle of the building,this data was analyzed to identify green design and construction practices that not only provide a green,luxurious environment but also enhance the hotels’financial strength.

关键词： green building green design and construction practice hotel industry case study

DECISION SUPPORT TOOLS FOR GREEN BUILDING:FACILITATING SELECTION AMONG NEW ADOPTERS ON PUBLIC SECTOR PROJECTS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2007年第3期2卷 153-171页

作者： Elizabeth Keysar Annie R.Pearce Concurrent Technologies Corporation(CTC) myers lawson school of construction Virginia Tech

Green building is becoming more mainstream in the public sector,especially in federal agencies such as the ***-ment of Defense,in a large part due to federal policies requiring more sustainable outcomes in the design and construction of public sector *** policies challenge contracted design professionals by adding new demands to a process already constrained by limited budgets,multiple objectives,and short time *** purpose of this research is twofold:(a)to inventory decision support tools available to aid the green design process,and(b)to investigate approaches for organizing these tools to facilitate tool selection and adoption by designers new to green *** research ap-proach is based on principles of innovation adoption theory,specifically the constructs of relative advantage and trialability of *** 275 design-related tools examined here address the spectrum of green building concepts and represent a range of applicability to different design *** of this research indicate that while considerable investment has been made in developing freely available web-based tools to support design,a relatively small number of those tools are immediately applicable to the task of making Leadership in Energy and Environment Design(LEED)credit determinations for specific *** two characteristics of innovations explored in this research provide a basis for explaining some of the anecdotal observations of tools employed in practice,suggesting a need for further research to confirm and extend the findings.

关键词： finding becoming adding

Reverse modulation of defect density of Ce-MOF-808 by solventassisted ligand exchange for dicyclopentadiene hydrogenation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Danfeng Zhao Fajie Hu Rushuo Li Xinmeng Xu Zhaokun Wang Zuoshuai Xi Jun Tong Xiubing Huang Ge Wang Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory of Function Materials for Molecule & Structure Construction School of Materials Science and Engineering University of Science and Technology Beijing

Defect engineering is a pivotal strategy for tailoring the electronic structure and physicochemical properties of catalysts, yet the straightforward manipulation of defect density in porous materials presents a current challenge. In this work, we achieved precise control over the coordination unsaturated site（CUS） content and pore architecture of Ce-MOF-808 by employing 2-fluorobenzoic acid（2-FBA） as a modifier. Leveraging the p Kadisparities among three ligands（1,3,5-tricarboxylic benzoic acid,formic acid, and 2-FBA）, we preserved the spn topology of Ce-MOF within an aqueous system, while realizing partial substitution of the auxiliary ligands and saturation of the CUS. The amount of 2-FBA was negatively correlated with the number of ligand defects, and the consequent decrease in Ce3+content and the increase in the number of ligand linkages also induced crystal structure transformation. The modulation of the defect structure was correlated with the catalytic performance of dicyclopentadiene（DCPD） hydrogenation reaction, in which Ce-MMF0.15, constructed by the modulation of 0.15 mol amount of 2-fluorobenzoic acid, exhibited an optimal ligand defect density and micro-mesoporous structure, enabling almost complete conversion of DCPD at 100 ℃ and 2 MPa. This article also elucidates the correlation between the regulation of defect density and the accessibility of frustrated Lewis pair（FLP） active sites, guiding the application of novel porous intrinsic FLP materials in hydrogenation catalysis.

关键词：

ENVIRONMENTAL RELATIVE BURDEN INDEX:A STREAMLINED LIFE CYCLE ASSESSMENT METHOD FOR FACILITIES POLLUTION PREVENTION

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2016年第1期11卷 95-107页

作者： Deborah E.Dickerson myers-lawson school of construction Civil and Environmental Engineering Virginia Tech Department of Civil and Environmental Engineering Virginia Tech

This paper describes a new semi-quantitative streamlined life cycle assessment(SLCA)method,the Environmental Relative Burden Index(ERBI),for describing and ranking the relative environmental burdens associated with facility operations and maintenance *** long-range goal is for this ERBI method to serve as a pollution-prevention decision support tool for facilities managers,when faced with competing operations and maintenance *** specific application pre-sented in this paper evaluates asbestos-containing materials(ACM)and lead-based paint(LBP)management options in public school *** ERBI methodol-ogy is adapted from previous streamlined semi-quantitative LCA methodologies and is described in *** ERBI is then employed to evaluate the relative environmental impacts of six management strategies for these hazardous building materials:management in-situ,encapsulation/containment,and full abatement/disposal,for both ACM and *** goal definition,system boundaries,ERBI matrix,and overall ERBI Ratings(RERB)for each material management strategy are *** ERBI can be a useful tool in prioritizing building maintenance alternatives,especially in cases where detailed quantitative data are unavailable.

关键词： Life Cycle Assessment buildings maintenance environmental hazards Environ-mental Relative Burden Index(ERBI)

DECISION-MAKING FRAMEWORK FOR SELECTION AND DESIGN OF SHADING DEVICES BASED ON DAYLIGHTING

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2007年第3期2卷 88-105页

作者： Svetlana Olbina Yvan Beliveau school of Building construction University of FloridaUSA myers-lawson school of construction Virginia Polytechnic Institute and State UniversityUSA

This research looked to improve the daylighting performance of a shading device as a window *** paper describes the development of the decision-making framework(DMF)for the selection and design of shading devices based on *** DMF presents the process of analysis of the shading devices’daylighting performance in the selection of existing shading devices and in the design of new shading *** research determined the shading device daylighting performance measures(such as illuminance and daylight autonomy)as well as the variables that influence daylight *** among the variables and the effects of these interactions on the shading device daylighting performance were explained and quantified in the *** DMF also included ways of present-ing the results of testing the shading devices and the process of making the decision.A case study for three blind systems was performed to determine if the DMF provides a concept for the analysis of the daylighting performance of shading devices and for making decisions about the design/selection of the shading *** simulation was used to calculate the illuminance levels and the daylight autonomies(DAs)as a result of the application of these *** values of the DAs are compared for three blind systems to select the most appropriate sys-tem to be applied on a proposed *** DMF based on daylighting can help building designers to select the most suitable shading device based on its daylighting performance,and can help shading device manufacturers in designing new shading devices with improved daylighting *** *** DMF diagram.

关键词： decision-making framework shading device daylighting transparent blinds illuminance daylight autonomy and simulation

THE SYSTEMATIC COURSE DEVELOPMENT PROCESS:Building a Course in Sustainable construction for Students in the U.S.A.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2009年第1期4卷 169-182页

作者： Yong Han Ahn Hyuksoo Kwon Annie R.Pearce John G.Wells myers-lawson school of construction Virginia Tech Virginia Tech Curriculum and Instruction Virginia Tech

The construction industry actively adopts the concept of sustainability to not only minimize the impact on the environment but also increase social and economic benefits through accepting sustainable design and construction *** growing trend in sustainable construction requires both new knowledge and new skills for sustainability,in addition to conventional knowledge,such as scheduling,estimating,contracting,*** to this paradigm change in the construction industry,construction programs in the *** offer sustainable construction courses in order to teach sustainable knowledge,technologies and skills to their students before their entrance into *** purpose of this study is to develop a sustainable construction course designed for university construction programs using a systematic course development approach divided into three stages including preparation,development,and *** course described in this paper is used to illustrate the systematic development process and can serve as an example for faculty at other universities on how to use such a *** the preparation stage,a syllabus review is conducted in order to recognize and evaluate current sustainable construction courses offered by construction *** addition,in-depth literature review is performed to identify current trends in sustainable construction courses and related *** development stage consists of:creating the framework for a sustainable construction course,choosing the goals and objectives for this course,choosing the contents of the course,organizing the chosen contents of the course,and planning the course *** the improvement stage,the proposed course is improved,reviewed,and evaluated by experts from both the construction industry and academia through a detailed feedback *** this systematically developed sustainable construction course,students in construction programs can learn basic knowledge of sustainability and the

关键词： sustainable construction construction education course development systematic approach