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Numerical stimulation method of chloride concentration in the concrete structure Exposed to Chloride Aggressive Environment Ying Huang 1,2 a ,Jun Wei 1,b, Rongzhen Dong 1, c and Huihuang Yan1,d 1School of Civil Engineering, Central South University, Changsha 410075,China 2College of Architecture and Civil Engineering, Jiangxi Science & Technology Normal University, Jiangxi 330013, China ahuangying7871@163.com,bjuneweii@163.com (corresponding author), cdongrongzhen@126.com , d704518970@qq.com Keywords: heat conduction equation; chloride diffusion coefficient; chloride concentration; life prediction Abstract.
Numerical stimulation method of chloride ion concentration in concrete structures based on the thermal analysis module of the ANSYS Finite element analysis software ANSYS is widely used in civil engineering, railway engineering and other industries.
Journal of wuhan university of technology，2005,27(6)：45-47（In Chinese） [9] Xianqiang MENG, Xianli WANG, Kaiying WANG.A multi-coefficient diffusion equation for predicting chloride ions concentration of concrete in marine environment [J].Engineering Journal of Wuhan University,2007,40(3)：57-60,92（In Chinese） [10] Zhao Yuxi, Wang Chuankun, Jin Weiliang. etc.
Experimental Analysis on Time-dependent Law of Surface Chloride Ion concentration of Concrete[J].Journal of Civil, Architectural & Environmental Engineering,2010,32(3):8-13（In Chinese） [11] Shangchuan ZHAO, Jinxin GONG, Jinfeng SHUI.

A novel hybrid algorithm with marriage of particle swarm optimization and homotopy optimization for tunnel parameter inversion HU Jian-ping1, LIU Ya-lian2, HE Xing3, WEN Jian-hua4 1The Civil and Architecture Department, Guangdong Technical College of Water Resources and Electric Engineering, Guangdong 510635 China 2Department of Water Resources, Guangdong Technical College of Water Resources and Electric Engineering, Guangdong 510635 China 3Guangzhou Development District Construction and Environmental Administration, Guangdong 510530 China 4College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangdong 510645 China email:459151252@qq.com Keywords: parameter inversion; Homotopy Optimization; Particle Swarm Optimization; tunnel displacement Abstract.
Tunnel Engineering Example Analysis We studied back-analysis of tunnel displacement based on HO-PSO at Shuibuya engineering.
New evolutionary back analysis algorithm in geotechnical engineering[J].Chinese Journal of Rock Mechanics and Engineering, 2003, 22(2)：192–196
Genetic algorithms for inverse analysis of displacements in geotechnical engineering[J].Chinese Journal of Rock Mechanics and Engineering, 2000, 19(Supp.)：979–982
Institute of Electrical and Electronics Engineers, 1997,(4):303-308

There is no doubt that this special edition will be useful to civil engineers and architects.

STUDY ON GEOLOGY MODEL OF GE-HE-YAN'S BACK ROCK MASS SLOPE Jie Liu1,2, a, Shiwei Luo2,b, Liangpeng Wan 2,c, Min Zhu 2,d 1Wu Han University , Wu Han ,430072, China 2College of Civil and Hydroelectric Engineering,China Three Gorges University,Yichang, 43002,China a liujiea@126.com,b luoshiwei@163.com,c 364528061@qq.com, d zhumin2006101531@126.com Keywords: Engineering geology model, Unloading rock mass theory,Deformation mechanism.
According to the research of geology condition in Ge-he-yan's back rock mass slope,set up the homologous engineering geology model, carried on parts of qualitative analysises, combined with numerical analysis method based on the unloading rock mass theory, gave the quantitative analysis of the engineering geology model, then got the special deformation mechanism of this slope. 1 Engineering geological model The significance of modeling.Model for the study of geological rock mass stability evaluation is important because： Each geological model has its own special law of deformation and failure ，which is the foundation of monitoring and prediction of rock mass deformation；geological model is the basis for physical and numerical simulation; geological model provides the object's boundary conditions and the initial mechanical parameters for stability calculation of rock mass; according to the geological model , the mechanism of rock deformation and failure can be studied.
Geological model for rock slope.The rock of slope engineering is composed by structural plane and intact rock.
Natural factors and human factors in slope engineering including: Slope excavation, the backfill replacement, building the construction of artificial and structures on slope,slope reinforcement,surfacewater and groundwater(pressure,seepage,the interaction between rock and water),ground stress(tectonic stress,gravity stress and residual stress).
In terms of slope on hydraulic engineering, the pressure and fluctuation of reservior water, and the thrust of dam on the slope should be considered again and again. 2 Conditions of engineering geological GE-HE-YAN'S back rock mass slope Ge-he-yan Dam located on Shangyang Tujia Autonomous County,in Yichang City ,Hubei Province.

Experimental Study of Mix Proportion on Masonry Mortar’s Common Strength Grade in Material Engineering and its Application Hongliang Huanga, Huifang Zhangb, Yanfang Lic, Guoqing Mad and Minfeng Lie Hebei Institute of Architecture Civil Engineering, Zhangjiakou 075000, China ahuanghong.5055@163.com, bzhfsyf_79@sohu.com, cshxianlmf@126.com, d23606745@qq.com, eliminfeng11@163.com Keywords: Masonry mortar, Mix proportion, Experimental study, Material engineering, Application Abstract.
It’s aimed for seeking the optimum mix proportion of masonry mortar through the comparative analysis of strength of Various proportions of masonry mortar, Promotion and application to be in material engineering.
Material engineering and its application In modern society, with the development of the construction industry, the popularity and application of new walling materials also set even higher requirements for masonry mortar’s functions.
This subject optimum mix proportion of masonry mortar, promotion and application in materials engineering.

Analysis on Excess Pore Water Pressure caused by Prestressed Concrete Pipes Construction in Saturated Clay Ground Guihai Fu1,2,a, Limin Wei1,b and Hui Zhou3,c 1College of Civil and Architectural Engineering, Central South University, Changsha 410075 , China 2College of Civil Engineering , Hu Nan City University , Yiyang 413000 , China 3College of City Manage Engineering , Hu Nan City University , Yiyang 413000 , China afugui6666@126.com, blmwei@mail.csu.edu.cn, cglxzhoufu@yahoo.cn Keywords: soft clay; single pile; piles-driving; excess pore water pressure Abstract: Prestressed concrete pipes construction by hammer cause high excess pore water pressure in deep soft soils because Soil disturbance by violent and poor permeability of soft soil.
Engineering [M].New York: Elsevier Science Publishing Co Inc
[4] Z.X Hu(1990), introduction of environmental geotechnical engineering.
Chinese Journal of Rock Mechanics and Engineering, (1):35-39
Chinese Journal of Rock Mechanics and Engineering.

Shear Test and Nonlinear Finite Element Analysis of Hybrid Fiber Reinforced HPC Deep Beams Shengbing Liu 1, a, Lihua Xu 2, b, Hailin Lu1, c and Hao Tan 1, d 1School of Environment and Civil Engineering, Wuhan Institute of Technology, Wuhan 430074,China 2School of Civil Engineering, Wuhan University, Wuhan 430072, China aajie2046@sina.com, bXulihua-d@126.com, chail_lu@yangtzeu.edu.cn, dhhao330@yahoo.com.cn Keywords: hybrid fiber; high performance concrete (HPC); deep beam; shear test; finite element analysis Abstract.
In recent decades, due to its excellent properties, hybrid fiber (steel fiber and polypropylene fiber) reinforced concrete becomes one of the new concrete materials which attract much attention in civil engineering [3-5].
Ding: High Performance Concrete and its Applications in Engineering (China Machine Press, Beijing 2007) (In Chinese)
Xu: China Civil Engineering Journal Vol. 46(2013) p. 29(In Chinese)

Flexural Fatigue Behavior of PAN Fiber Reinforced Concrete under Cyclic Loading Weidong Zhuoa, Ping ShangGuanb and Yin Guc College of Civil Engineering, Fuzhou University, Fujian, P.
Introduction In recent years, polyacrylonitrile (PAN) fiber reinforced concrete（PANFRC）has been used in civil engineering structures such as airport pavements, highway overlays, bridge decks and machine foundations, etc.
To predict the fatigue life of PANFRC used in practical engineering structures such as highway overlays and bridge decks, etc. 3.
Traditional S-N equations are not suitable for civil engineering structures.
Gu: Journal of Civil Engineering, Vol. 23 (1990), p.11-22 [in Chinese]

Mechanical Behavior of The Slab on Prestressing Tendons Concentrated Arranged along the Columns Rong Yao 1,a, Henghong Liang 2,b , Pinghua Zhu 3,c 1 Department of Civil Engineering, Yangzhou Polytechnic College, Yangzhou 225009 , China; 2School of Communications, Southeast University, Nanjing 210008,China 3 Department of Civil Engineering, Changzhou University，Changzhou 213164，China ayaorong2004@126.com, blianglei@seu.edu.cn,cdoctormrzhu@tom.com Keywords: Prestress; Unbonded; Slab; Concentrated Layout Prestressing Tendons.
Introduction In engineering design, the prestressing tendons(shortened form:PT) in beam-less slab are often considered as the hidden beams.
Non-cohesive Prestressing Concrete Construction Technical Regulation, Construction Industry Publications, China, BJ (2005) [4] W.H.Hao:ANSYS Application Examples in Civil Engineering, Chap.4, Hydraulic and Hydroelectric Publications, BJ (2005) [5] X.Z.Lu,J.J.Jiang: Analysis with Complex Stress State of Concrete structure applied ANSYS SOLID65, ANSYS CHINA user conference proceedings(2002), p.473-478 [6] J.M.Fu,J.Cai: submitted to Journal of Guangdong Civil Engineering and Construction (2009)

Recycled poly(vinyl butyral) used as a barrier to prevent mortar carbonation Michael Tupý1,a, Daniela Štefková2,b, Konstantinos Sotiriadis1,c, Lukáš Krmíček3,d, Ladislav Carbol2,e and Vít Petránek1,f 1Institute of Technology of Building Materials and Components, Faculty of Civil Engineering, Brno University of Technology, Veveří 331/95, 602 00 Brno, Czech Republic 2Department of Physics, Faculty of Civil Engineering, Brno University of Technology, Žižkova 17, 602 00 Brno, Czech Republic 3Institute of Geotechnics, Faculty of Civil Engineering, Brno University of Technology, Veveří 331/95, 602 00 Brno, Czech Republic atupy.m@fce.vutbr.cz, bstefkova.d@fce.vutbr.cz, csotiriadis.k@fce.vutbr.cz, dkrmicek.l@fce.vutbr.cz, ecarbol.l@fce.vutbr.cz, fpetranek.v@fce.vutbr.cz Keywords: Poly(vinyl butyral), mortar, CO2 diffusion, carbonation, impact-echo method Abstract.
Worldwide, the total amount of PVB sheet produced by automotive industry and civil engineering is estimated to around 120 million kg per year [6].
The response was picked up by an MIDI type piezoelectric sensor, whose output voltage was fed into a TiePie engineering Handyscope HS3, which is a two-channel, digital, 16 bits oscilloscope.