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Experiment Study of BFRP bars’ Mechanical Properties Baorong HUO 1,a, Xiangdong ZHANG 2,b 1.College of Architectural and Engineering ,Shenyang University, P.R.China, 110044 2.
College of Civil Engineering and Traffic, Liaoning Technical University， P.R.China 123000 aweizengkui888@163.com,bzhxd2008@yahoo.com.cn Keywords:BFRP; force - deformation curve; tensile strength; tensile elastic modulus Abstract.The testing rule of mechanical properties of material can be established and the mechanical performance can be found by studying the basic mechanical properties of BFRP bars.
Compared with steel bar, BFRP bar has advantages,such as corrosion resistance, high strength, light weight, anti-fatigue,and so on.So it can be completely or partly replaced steel for concrete structure,and fundamentally solve corrosion problems of steel.Therefore attention is gradually given in the civil engineering [4,5].
References [1] Qingduo Hao,Yanle Wang i，Jinping Ou.Experimental study on optimization of rib geometries for glass fiber reinforced composite rebars[J]．Acta Materiae Compositae Sinica, 2008,25(1):119-126.( In chinese) [2] Lieping Ye, Peng Feng.Applications and development of fiber-reinforced polymer in engineering structures[J].China Civil Engineering Journal，2006，39（3）：24-36. ( In chinese) [3] Baorong Huo, Xiangdong Zhang.Consolidation Test of RC Columns Bound with Two Kinds of Fiber BFRP,CFRP.2010 Iternational Coference on Civil Engineering in China-Current Practice and Research Report，19-20 July ,2010，836-840. ( In chinese) [4] Xianqi Hu．The overview of the present development of basalt fiber in china[J]．Hi-Tech Fiber & Application，2008，33(6)：12-19. ( In chinese) [5] Baorong Huo,Xiangdong Zhang,Zhe Hao,Xuemin Liu.Nonlinear FEM Analysis of Two-Way Curved Arch Bridge Reinforced by BFRP [J].Journal of Shenyang Jianzhu Uniwersity Natural Science,2010,26(5):887-891. ( In chinese) [6]
Baorong Huo,Bo Yang, Xiangdong Zhang,Yang Song.FEM Analysis of New-Type BFRP Reinfoced Concrete Beams’Mechanical Properties [J].Journal of Shenyang Jianzhu Uniwersity Natural Science, 2011，27（2）：286-291. ( In chinese) [7] Gang Wu，Yunbiao Luo，Zhi-shen Wu，Xianqi Hu．Experimental study on mechanics properties of steel fiber composite bar(SFCB)under uniaxial load[J]．Earthquake Resistant Engineering and Retrofitting，2009，31(1)：1-7．( In chinese) [8] Kokakos S， Samaranayake V A， Nanny A．Tensile characterization of glass FRP bars[J].

Environment Impact comparison of Different Structure System Based on Life Cycle Assessment Methodology Haibei Xiong 1, a, Yang Zhao1,b 1 College of Civil Engineering of Tongji University, China axionghaibei@126.com, bzhaoyang160@126.com Keywords: timber structure, life cycle assessment, environment Impact Abstract.
China Civil Engineering Journal, Vol.40-10 (2007), P. 41
Journal of Earthquake Engineering and Engineering Vibration, Vol.28-1 (2008), P. 91
China Civil Engineering Journal, Vol.43-11 (2010), P. 71
China Civil Engineering Journal, Vol.39-12 (2006), P. 33

Perforated FRP Shear Connector for the FRP-Concrete Composite Bridge Deck Jeong-Hun Nam 1, Soon-Jong Yoon2, Dong-Min Ok3 and Sun-Kyu Cho4 1, 2 Department of Civil Engineering, Hongik University 72-1 Sangsu-dong, Mapo-gu, Seoul 121-791, Korea 3 Daewoo E&C Co., Ltd., Daewoo Center Building, 541 Namdaemun-no 5-ga, Jung-gu, Seoul 100-714, Korea 4 Department of Civil Engineering, Seoul National University of Technology, Seoul 139-746, Korea 1 cheethar@hanmail.net, 2sjyoon@hongik.ac.kr, 30301531@dwconst.co.kr, 4 skcho@duck.snut.ac.kr Keywords: FRP-concrete composite bridge deck, Perforated FRP shear connector, Push-out test, Shear behavior Abstract.
Shahrooz: AISC Engineering J.
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Study on Prediction Models for Time-Dependent Settlement of Soft Road Foundation Aizhao Zhou1, Weiwei GU2, Wei Wang3 1 School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, China 212003 2 Jiangsu Coal Geology Exploration Fifth Battalion, China 212000 3 Department of Civil Engineering, Shaoxing University, China 312000 (2012-5-20/ 2012-6-30) Keywords: Settlement; Road foundation; Mathematical model Abstract: The characteristics of soft clay roadbed settlement prediction model are studied in this paper.
Introduction With the rapid development of civil engineering, more and more highways are constructed on soft soil foundation.
The research of this paper is helpful for management of corresponding engineering.
Mei:Journal of Nanjing Architectural and Civil Engineering Institute, Vol. 53(2000), p. 8 [4] G.
Meng: Railway Engineering, Vol. 3(2006), p.62 [8] M.

Research on Bending Resistance of Corroded RC Beams Qing Wang 1,2,a, Gang Xu 2,b, Guiling Liang2,c, Jun Wei1,d 1 School of Civil Engineering＆Architecture, Central South University, Changsha, Hunan, 410075, China 2 College of Civil Engineering＆Architecture, China Three Gorges University , Yichang, Hubei, 443002, China apostwq@163.com, bpostxg@163.com, c715137399@qq.com,djuneweii@163.com Keywords: Bending Resistance; Sustained Load; Corroded Steel Bar; Mechanical Property Abstract.
Acknowledgement This work is supported by Major Scientific and Technical Project of Ministry of Railway (No. 2008G031-18), Open Foundation of National Engineering Laboratory for High Speed Railway Construction and the Key Scientific Research Project of Hubei Education Department of China (No.
Vol. 31(2001), p. 9(In Chinese) [5] Y.S.Yuan，F.P.Jia and Y.Cai: China Civil Engineering Journal.
Vol. 35(2005), p.2371 [8] W.J.Yi and X.Zhao: China Civil Engineering Journal.
Huang: Sichuan Building Science.Vol.34(2008), p.10(In Chinese) [12] B.Sun, D.T.Niu and Q.L.Wang: China Civil Engineering Journal.Vol.41 (2008), p.1(In Chinese) [13] J.X.Gong, W.W.Wei and S.C.Zhao: Basic theory and application of modern concrete structure(China Architecture and Building Press, BeiJing 2009) (In Chinese)

Numerical Analysis for Progressive Collapse and Protection of Underground Structure under Internal Blast Load Li Tian1, a, Qi Wang1, b 1School of Civil Engineering, Tianjin University, Tianjin, 300072, China 2Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China altian@tju.edu.cn, bwq19880328@126.com Keywords: Underground Structure, Progressive Collapse, Numerical Simulation, Three-Stage Simulation Method, Foamed Aluminum.
Reston (Virginia):American Society of Civil Engineers; 2002
[3] United States Army Corps of Engineers.
US Army Corps of Engineers, Washington DC; 1999
Zheng and H.GAO: Journal of Architecture and Civil Engineering, In Chinese, Vol.24 (2007), p. 1-5 [6] Livermore Software Technology Corporation: LS-DYNA theory manual, California, (2006)

And it will be the development tendency of civil engineering[2,3].
The experiment was carried out in the laboratory of the civil engineering department of Beijing University of Technology.
Treatments for the improvement of recycled aggregate．Journal of Materials in Civil Engineering.
Engineering Structures.
An experimental study on the seismic behavior of recycled concrete frames．China Civil Engineering Journal, Vol.39(5)(2006), p. 9-15.

Basic Study on the Effect of Water Sprinkling Curing Immediately after Demolding on the Initial Strength of Steam Cured Mortars Tsubasa Sato1,a,*, Nana Katsuoka1,b, Yoshiki Uno2,c and Shigeyuki Date3,d 1Tokai University/Master course of Civil Engineering, Hiratsuka City, Japan 2Sato Kogyo Co.
/Department of Civil Engineering, Tsukuba City, Japan 3Tokai University/ Department of Civil Engineering, Hiratsuka City, Japan asatotsubasa1123@gmail.com, bkatsuoka7@gmail.com, cuno@satokogyo.co.jp, dsdat@tokai-u.jp Keywords: Concrete, Precast concrete, Curing, Compressive Strength, water sprinkling curing Abstract.
Rostami et al: Carbonation Curing versus Steam Curing for Precast Concrete Production, Journal of Materials in Civil Engineering, pp. 1221-1229, (2012) [2] Kunlin Ma, et al: A real case of steam-cured concrete track slab premature deterioration due to ASR and DEF, Case Studies in Construction Materials, Vol,6 June 2017, Pages 63-71 [3] Koji OTSUKA, et al: Properties of microcracks formed on the surface of the concrete at steam curing period, Japan Society of Civil Engineers, No.520/V-28,143-155,1995.8 [4] Xiaofeng Han et al: Volume Deformation of Steam-Cured Concrete with Slag during and after Steam Curing, Materials 2021, 14, 1647 [5] K.Maruyama et al: Study on Strength Characteristics and Pore Structure of Concrete Products under Different Steam Curing Conditions, Proceedings of the Japan Concrete Institute, Vol. 33, No. 2, pp. 571-576, (2011) [6] Q.Huang et al: Early-Age Shrinkage Effects In Precast Concrete Sandwich Panels, Precast/Prestressed Concrete Institute Journal,
(In Japanese) [10] apan Concrete Institute, Vol. 2, No. 30, pp. 163-168, (2008) Japanese Standards Association: JIS R 5201, Physical Test Methods for Cement, (2015) [11] Songhee Lee, et al: Optimization of Curing Regimes for Precast Prestressed Members with Early-Strength Concrete, International Journal of Concrete Structures and Materials Vol.10, No.3, pp.257–269, September 2016Authors’ background [12] Jin-Keun Kim, et al: Hydration and Thermal Stress in Concrete Structures, The 2013 World Congress on Advances in Structural Engineering and Mechanics (ASEM13) Jeju, Korea, September 8-12, 2013

Rehabilitation of Concrete Surfaces of Hydropower Engineering Structures Deteriorated by Soft Corrosion and Cavitation Sergii Guzii1, a, Rudolf Hela2, b, Vladimir Kirichok1, c 1Kiev National University of Civil Engineering and Architecture, SRIBM, Vozdukhoflotsky prospect, 31 Kiev 03037 Ukraine 2Brno University of Technology, Faculty of Civil Engineering, Institute of Technology of Building Materials and Components, Veveri 331/95, 602 00 Brno, Czech Republic asguziy@ukr.net, bhela.r@fce.vutbr.cz, cv.kyrychok@gmail.com Keywords: alkaline aluminosilicate, bond, cavitation, coating, concrete, resistance, soft corrosion.
This paper covers the results of study of the reasons explaining why soft corrosion and cavitation-induced erosion take place on the surfaces of the hydropower engineering structures made from concrete.
Introduction Hydropower engineering structures are subjected during service to cavitation-induced erosion and corrosion of concrete of I Type – dissolution of the cement stone hydration products with demineralized and soft waters, so-called leaching.
However, in case of dense massive concrete of which the hydropower engineering structures are made the process of leaching from the concrete takes place rather slowly and may be detected after a few decades.
Fig. 1 Schematic representation of the Са(ОН)2 leaching from the concrete surface Fig. 2 Scheme of cavitation deterioration of the concrete surface: a – a spherical cavitation vapor-gas bubble, b – losses of spherical stability under turbulent exposure of water flow, c – collapse of a cavitation bubble with formation of a cumulative jet, d – mechanical exposure of a cumulative jet (hydraulic shock) on the concrete surface: deterioration of the concrete surface, formation of microvortices, ionization of the surface and liquid (water) Nowadays, a number of different plaster mortars and shotcrete from Portland cement with organic additives as modifiers are used to protect concrete of hydropower engineering structures from soft corrosion and for rehabilitation works.

Therefore, from civil engineering perspective, it is very important to know the compaction characteristics of soils to assess their suitability as a soil liner.
Bentonite has been used widely in civil engineering application especially use activities that required action as an absorbent material, hydraulic barrier, and sealant [5,6].
Jordan Journal of Civil Engineering, 11(4), 614-622(2017)
Engineering Geology, 39(3), 239-248 (2017)
[10] BS 1377, Part 1 – 4.: Methods of test for Soils for civil engineering purposes.