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Effect of some key factors on the strength of recycled concrete Xuebing Zhang1,2,a, Zhi Fang1,b 1 College of Civil Engineering, Hunan University, Changsha 410082, Hunan, China 2 College of Civil Engineering & Mechanics, Xiangtan University, Xiangtan 411105, Hunan, China azhangxb00@163.com, bfangzhi@hnu.cn Key words: recycled concrete; compressive strength; split-tension strength; key factors Abstract: Because there exists a used cement mortar layer outside the recycled aggregate, there are more interfaces inside recycled concrete, which would result in recycled concrete has different properties from ordinary concrete.
The Raw Materials in Experiment Coarse Aggregate Using the concrete test cube abandoned by the College of Civil Engineering and Mechanics, Xiangtan University, the Detection Centre for Test (The coarse aggregate in primary concrete is pebble) was broken by manual work, screened to get the recycled aggregate, which has the surface characters similar to crushed stone, in dried condition.
But in actual engineering, the sand ratio can’t be much little.
[13] Xiaoqin Peng, Tao Huang, Kaiyu Wang, et.al: Journal of Civil, Architectural & Environmental Engineering Vol. 3 (2009), p. 124-129, in Chinese
[14] Xiaoming Huang, Ganghua Pan, Yongli Zhao: Civil Engineering Materials (Southeast University Press, Jiangsu 2001), in Chinese.

Evaluating Sulphate Resistance of Cement-Based Systems by Sulphate Content Determination after Exposure Vivek BINDIGANAVILE*1a, Chiqian OU2b, Zheng CHEN3c and Yaman BOLUK4d 1 Associate Professor & Contact Author, Department of Civil and Environmental Engineering, The University of Alberta, Edmonton, Canada, T6G 2W2 2 Graduate Research Assistant, Department of Civil and Environmental Engineering, The University of Alberta, Edmonton, Canada, T6G 2W2 3Professor, Key Laboratory of Disaster Prevention & Structural Safety, Guangxi University, Nanning, China, 530028 4Professor and Nanofibre Chair, Department of Civil and Environmental Engineering, The University of Alberta, Edmonton, Canada, T6G 2W2 a vivek@uablerta.ca, b chiqian@ualberta.ca, c chenzheng@gxu.edu.cn, d yaman@ualberta.ca Keywords: cement-based composites, compressive strength, fly ash, expansion, pore size refinement, splitting tensile strength, sulphate ingress Abstract.
Acknowledgements The authors thank the Natural Sciences and Engineering Research Council (NSERC) Canada for financial support of this study through the Collaborative Research and Development Grant.
Journal of Materials in Civil Engineering. 2003;15(4):305-13
Journal of Materials in Civil Engineering. 2003;15(4):314-22

Mechanical evaluation of timber conservation processes by bending tests Dulce Franco Henriques 1, a, Lina Nunes 2,4b and Jorge de Brito 3,c 1 Department of Civil Engineering - Instituto Superior de Engenharia de Lisboa - ISEL, Lisbon, Portugal 2 Structures Department, Laboratório Nacional de Engenharia Civil, Lisbon, Portugal 3 Department of Civil Engineering and Architecture, Instituto Superior Técnico, Technical University of Lisbon, Portugal 4 Azorean Biodiversity Group (CITA-A) and Platform for Enhancing Ecological Research & Sustainability (PEERS), Universidade dos Açores, 9700-042 Angra do Heroísmo, Terceira, Açores a mfhenriques@dec.isel.pt, b linanunes@lnec.pt, c jb@civil.ist.utl.pt Keywords: Wood, degradation, conservation, consolidation, old buildings.
The authors also wish to acknowledge the support of the research centre ICIST (Instituto de Engenharia de Estruturas, Território e Construção), IST, Technical University of Lisbon and of the National Laboratory of Civil Engineering (LNEC).
Highley, Biodeterioration of wood, Wood handbook - Wood as an engineering material, Gen.

The Fuzzy Matter-element Comprehensive Evaluation Model for Erosion Stability of Geocell Protection of Slope and its Application Wang Guangyue1, a, Zhao Janwu1,b 1School of Civil Engineering, Shandong University, NO 17923 Jingshi Road, Jinan, China P R awgyue@sdu.edu.cn, b 630707919@qq.com Keyword: Geocell Protection of Slope, Stability, Matter-element, Dependent Degree.
Some failure cases appeared in engineering practices which lead to economic loss and casualty.
The evaluation result accord with practical engineering.
Bao: Principle and application of geosynthetics in engineering.
Wang: Comprehensive Evaluation Technology and Application to Civil Engineering.

CHARACTERIZATION OF A CLAY BODY USED FOR RED CERAMICS IN SÃO SEBASTIÃO, DISTRICT OF CAMPOS DOS GOYTACAZES, STATE OF RIO DE JANEIRO, BRAZIL Afonso Rangel Garcez de Azevedo1,a, Jonas Alexandre1,b, Euzébio Barnabé Zanelato1,c, Rafael Picanço Oliveira1,d, Rodolfo Cretton de Souza1,e, Gustavo de Castro Xavier 1,f and Sergio Neves Monteiro2,g 1 UENF - State University of the Northern Rio de Janeiro, LECIV – Civil Engineering Laboratory; Av.
Alberto Lamego, 2000, 28013-602, Campos dos Goytacazes, Brazil 2Department of Materials Science, Military Institute of Engineering - IME, Praça General Tibúrcio, 80, Praia Vermelha, Urca, RJ, CEP 22290-270, Urca, Rio de Janeiro, RJ, Brazil.
Introduction In past years the market for civil construction in Brazil is undergoing an expansion owing to countrywide government projects such as the “Minha Casa, Minha Vida” (My House, My Life) and the “PAC” (Program for Acceleration of the Growth) [1].
Materials and Methods This work was performed at the Laboratory of Civil Engineering (LECIV) of the State University of the Northern Rio de Janeiro (UENF) located in the city of Campos dos Goytacazes, Brazil.
Conclusions · The clay body typically used in the fabrication of common red ceramic products for civil construction in São Sebastião, a district of Campos dos Goytacazes, northern region of the state of Rio de Janeiro, Brazil, was found to be mostly composed of kaolinitic clay but with a relatively low amount of fluxing components

Journal of geotechnical engineering, 1989,11 (4) :35-44 [2] J.F.Xie, Z.J.
Earthquake engineering and engineering vibration, 1988,8(1):61-77 (in Chinese) [3] The Chinese academy of sciences institute of engineering mechanics[M].
Journal of civil engineering. 2003,36 (6) :67-72.
Earthquake engineering and engineering vibration, 2003,23(3):35-40．
Applied in civil engineering .Vols. 90-93 (2011) pp 172-175(in Chinese)

To dynamically address these and to capitalise on real opportunities which they present for the future, University Clermont Auvergne, Queen's University Belfast and Universitat Politècnica de Catalunya have united leading building and civil engineering sector players and international experts, and other key stakeholders in a framework of this a milestone event in 2021's professional and business calendar.
The conference attracted 180 people a wide range of academics, scientists, researchers, students, designers, policymakers, and other industrialists from a wide variety of backgrounds, including fields of engineering, materials, sustainable development, architecture, and ecological technologies, biomaterials, materials sciences, environmental engineering and government agencies, end-users, etc.
We also value the financial support of Association Universitaire de Génie Civil AUGC and GdR MBS Matériaux de construction biosourcés (CNRS).

The Organizing Committee of ICSBM 2012 Sponsored by The College of Architecture and Civil Engineering, Beijing University of Technology School of Civil Engineering and Architecture, Zhejiang University of Technology Conference Organization Co-Chairmen Prof.

Measuring the Deflection of Reinforced Concrete Slab Branislav Páleník1, a *, Anna Stará2,b ,Richard Kratochvíl3,c and Miloš Zich4,d 1, 2, 3, 4 Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, 602 00 Brno, Czech Republic a palenik.b@fce.vutbr.cz, b stara.a@fce.vutbr.cz, c kratochvil.r2@fce.vutbr.cz, d zich.m@fce.vutbr.cz Keywords: Concrete, a slab deflection, a very precise levelling.
Measurement Measurements were carried out in collaboration with the Institute of Geodesy, Faculty of Civil Engineering by a precise levelling method.

There are also corresponding provisions in Code for design of civil buildings, as shown in Table 2.
For example, a wall adopts 90mm-thick round hole boards of ceramsite concrete, field measurement shows that its standard weighted sound pressure level difference for octave frequency band is only 37dB; and after stemming the round holes in the board with wet sand, field measurement shows that its standard weighted sound pressure level difference for octave frequency band reaches 40dB, meeting the requirements of Code for design of civil buildings
[2] Inner Mongolian Autonomous Region, in: Specifications and Testing Method of Thermal Performance for Passive Solar Houses[S],Chinese Academy of Agricultural Engineering (1994) (In Chinese)
Zhang, in: Application of Sound Insulation Technology to Civil Engineering[J], Environment Engineering, 2002, 20(3), pp. 44-46(In Chinese).