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Study and Application of the Self-compacting Recycled Pavement Concrete of High Early Strength Qingtao Liu1,a, Guoping Cen1,b, Liangcai Cai1,c, Yonggen Wu1,d, Hesheng Wu2,e, Xiaojun Liu1,f 1Air Force Engineering University Engineering College，Xi’an ShaanXi 710038，China 2The Sixth Air Defence Engineering Department of Air Force，Hengyang HuNan 421001，China akgywxlqt@163.com(corresponding author), bcenguoping@163.com, cliangcai07@126.com, dwuyonggen1@163.com, ecfn1958@163.com, fsmile97731@sina.com Keywords: airfield engineering; self-compacting; early strength; recycled aggregates; recycled concrete Abstract: This paper aimed at the problem of how to rapid repair the military airfield pavement after it be demolished.
The flexural strength could achieve more than 5.5MPa at 28 days, and the recycled concrete felt with the existent pavement well, which could fulfill the long-term requirements of airfield pavement, the concrete also could be used in the rapid repair the cement concrete pavement of civil airfield and highway. 1 Introduction Cement concrete has excellent construction properties and durability[1], it constitutes the mostly building material of airfield pavement.
The strength of the concrete kept on increasing afterward, the flexural strength at 28 days could achieve more than 5.5MPa, and the recycled concrete felt with the existent pavement well, which could fulfill the long-term requirements of airfield pavement[4].The concrete also could used in the rapid repair cement concrete pavement of the civil airfield and highway without suspend air service and open the traffic early, which has biggish benefits of military, economic and environmental. 2 The objects and technology programmes of preparation 2.1 Objects of preparation (1)Workability: The initial slump is more than 100mm, and the Vebe consistency within 5 seconds, the concrete could be compact by gravity or a little manual vibration so as to construct conveniently.
Air Force Engineering University Engineering College(XS1101025).
[4] GJB 1112A-2004, Construction and acceptance specification for flying area engineering of the military airfield, S

Experimental research on the influence of the pile type and stirrup on the seismic performance of PHC piles Tiecheng Wang1, a, An Gao2,b and Hailong Zhao3,c 1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China 2 School of Civil Engineering, Tianjin University, Tianjin 300072, China 3 School of Civil Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China awangtiecheng@eyou.com, bjuebuditou@yeah.net, czhaohailong@tju.edu.cn Keywords: PHC pile, Stiffness degradation, Hysteretic performance, Displacement ductility coefficient, Energy dissipation coefficient Abstract.
References [1] (DBJT29-44-2010) Engineering construction standard design of Tianjin (in China).

Mechanical Analysis and Economic Research of RPC Beam Bridge Xin Peng1,a,Jian Yang1,b, Jinsheng Wang1,c Bridge Engineering, college of Civil Engineering, Central South University, Changsha 410075 a675791010@qq.com,bjianyangyy@126.com, c1186289489@qq.com Keywords: RPC Bridge engineering Prestressed Economy Abstract: RPC(Reactive Powder Concrete) is a kind of high performance concrete which has many excellent mechanical properties, e.g. ultra-high-strength, high tenacity and good durability, and it has been applied in engineering practice.
RPC is a kind of high performance concrete which has ultra-high strength, high toughness, good durability and other excellent mechanical characteristics. there are some engineering practices used RPC in Canada, Japan, Korea, Australia and other countries [1],which include pedestrian bridge, arch, deck and engineering protection board, besides, RPC has also been applied to the engineering practices in china [2].
Comparative analysis 3.1 Mechanics properties analysis The models of NC beam bridge and RPC beam bridge are established by the FEM software Midas-Civil, and the models are separately represented by M0 and M1.
The engineering data of the bridges which have been built indicate that total construction investment of a NC(C50) pre-stressed beam bridge (the length is 40m) is 3.84 million RMB (4 thousand per square meter), and the investment of upper structure accounts for about 60% of the total construction investment.
Besides, the previous engineering data indicate that the maintenance and repair costs of the later service period of bridges account for 10% of the total construction investment, it is about 380 thousand RMB.

The important problems of Building Constructions, Building Materials, Industrial and Civil Construction and Structural Mechanics and Theory of Structures (from ideas and projects to immediate implementation) are raised and the ways of their solution and optimization are suggested in the reports presented in frameworks of these topics.
Russia – Doctor of Engineering Sciences (Advanced Doctor), Professor, Peter the Great St.
Russia – Doctor of Engineering Sciences (Advanced Doctor), Professor, Bryansk State Engineering Technological University Nenad Stoykovich Serbia – Ph.D., Nish Higher Technical School of Vocational Education Naumov A.E.
Russia – Doctor of Engineering Sciences (Advanced Doctor), Professor, Belgorod State Technological University named after V.G.
Russia – Doctor of Engineering Sciences (Advanced Doctor), Professor, Belgorod State Technological University named after V.G.

Experimental Investigation on the Shear Behaviour of Concrete Beams Reinforced with GFRP Reinforcement Bars Noor Azlina Abdul Hamid1, 2, a, Azmi Ibrahim2, b, Rendy Thamrin3, c and Hanizah Abdul Hamid2, d 1Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia 2Faculty of Civil Engineering, Universiti Teknologi Mara, Shah Alam, Selangor, Malaysia 3Faculty of Engineering, Universiti Andalas, Padang, Indonesia aazlinah@uthm.edu.my, bazmii716@yahoo.com, crendy@ft.unand.ac.id, dhanizah_ah@yahoo.com Keywords: reinforced concrete beams, GFRP bars, shear behaviour, stirrups Abstract.
Due to superior advantages compared to steel, the increasing consideration for use in civil infrastructures applications ranging from new construction structural system to the repair and rehabilitation works grow rapidly over the past decades.
Journal of Materials in Civil Engineering, 2002. 14(3): p. 191-209
Hollaway, A Review of the Present and Future Utilisation of FRP Composites in the Civil Infrastructure with Reference to their Important In-Service Properties Journal of Construction and Building Materials, 2010. 24: p. 2419-2445

Experimental Research on Concrete Confined by Width and Spacing of Straps of GFRP sheets Huaxin Liu 1, a and Dongming Wang 2, b 1 Civil Engineering & Architecture College Liaoning University of Technology, Jinzhou, 121001, China 2 National Earthquake Response Support Service Center, Beijing, 100049, China algliuhuaxin@sina.com, bsjwdm@163.com Keywords: GFRP; concrete prism; width of straps; spacing of straps Abstract.
The technology of GFRP has received significant attentions in civil engineering due to their unique properties, such as high strength-to-weight radio, good resistance to corrosion and fatigue, convenient to construction and no additional dimension.

[3] Frantzis P,Journal of Materials in Civil Engineering, American Society of Civil Engineers,Vol(16), No.4, Washington, D.C. (2004)
[4] Frantzis P, Journal of Materials in Civil Engineering, American Society of Civil Engineers, Vol (15), No.5 (2003)

School of Civil Engineering, Shenyang Jianzhu University, Shenyang, 110168, China 2.
Reference: [1] Japan Society of Civil Engineers.
Report on the Hanshin-Awaji Earthquake Disaster-Damage to Civil Engineering Structures Bridge Structure.
Mech. and Earthquake Engrg., Japan Society of Civil Engineers (1985), Tokyo, 2(1), 25-34

The phosphorus removal characteristics of Grain-slag as filter media Yan Feng1, a, Yanzhen Yu2,b,* ,Mantun Li3,c and Lei Cheng4,d 1 School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China 2 School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China 3 School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China 4School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China acea_fengy@ujn.edu.cn, bcea_yuyz@ujn.edu.cn, c limantun @163.com, d chenlei @163.com, * Corresponding author Keywords: grain-slag media，pH, chemical precipitation，phosphorus removal Abstract: A novel filter media-grain slag as filter media for the removal of phosphorous studied in the paper.

Energy consumption of rental houses for the low-income class in South Korea Park Jong Cheon1,a, Lee Kang-Guk2,b, Hong Won Hwa3,cand Joo Chi Hong4,d 1School of architectural& civil engineering, Kyungpook National University, Daegu, Korea 2School of architectural& civil engineering, Kyungpook National University, Daegu, Korea 3School of architectural& civil engineering, Kyungpook National University, Daegu, Korea 4School of architectural& civil engineering, Kyungpook National University, Daegu, Korea aace7007@nate.com, bggyi@naver.com chongwh@knu.ac.kr, dJooch@knu.ac.kr Keywords: Energy, Consumption, Building energy, rental houses, low-income class.