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Flexural Behavior of Reinforced-Concrete (RC) Beams Strengthened with Hemp Fiber-Reinforced Polymer (FRP) Composites Seyha Yinh1,a, Qudeer Hussain1,b, Winyu Rattanapitikon2,c and Amorn Pimanmas3,d 1Graduate Students, School of Civil Engineering, SIIT, Thammasat University, Thailand 2Associate Professor, School of Civil Engineering, SIIT, Thammasat University, Thailand 3Professor, School of Civil Engineering, SIIT, Thammasat University, Thailand aseyha-yinhmr@hotmail.com, bebbadat@hotmail.com, cwinyu@siit.tu.ac.th, damorn@siit.tu.ac.th Keywords: Deflection; flexural strength; hemp FRP; reinforced concrete (RC) beams; ultimate load.
Introduction Nowadays, strengthening of new or existing reinforced concrete (RC) structures to enhance higher loading capacity has become one of the most significant studies in structural engineering society.
Fardis, Seismic retrofitting of columns with lap spliced smooth bars through FRP or concrete jackets, Journal of Earthquake Engineering. vol. 11, no. 5, pp. 653-674, 2007
Shrive, A new steel anchorage system for post-tensioning applications using carbon fibre reinforced plastic tendons, Canadian Journal of Civil Engineering. vol. 25, no. 1, pp. 113-127, 1998
Sandeep kumar L.S, Rumina Nizar, Retrofitting of RC beams using natural FRP wrapping (NSFRP), International Journal of Emerging trends in Engineering and Development. vol. 5, no. 3, pp. 168-178, September 2013.

The Mechanical Behavior Of Reactive Powder Concrete With Different Steel Fiber Volume Contents Xiaofei Wang, Licheng Wu, Yangping Wang (Beijing Jiaotong University, School of Civil Engineering, Beijing 100044) wxf.225@163.com, 1070948379@qq.com, 121392147@qq.com Keywords: Reactive Powder Concrete, Steel Fiber, Compressive Strength, Bending Strength, Tensile Splitting Strength.
The tensile splitting test and bending test were finished in Civil Engineering Laboratory of School of Civil Engineering, Beijing Jiaotong University.
The uniaxial compression test has been done in Building Materials Laboratory of Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University.
RPC compressive strength to steel fiber volume content curve as below: Fig 1: Compression Strength of RPC with Fig 2 : Flexural Strength of Reactive powder concrete with different steel fiber contents different Steel Fiber contents 3.2 Bending strength We often use the compressive strength to describe the concrete that used in civil engineering structures good or not.
We often use the tensile splitting behavior to describe the tensile strength of concrete in engineering.

The impact of construction activities on vegetation Vaclav Pospichal1,a*, Helmut Kurth1, b 1Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7, 166 29, Prague, Czech Republic apospich@fsv.cvut.cz, bdr.kurth@t-online.de Keywords: sustainable development, ecological requirements, vegetation Abstract.
The environmental effects of civil engineering activities can generally be divided into positive and negative.
Pospichal, Ecological Requirements for Concrete Construction, Applied Mechanics and Materials, Vol. 796, pp. 111-118, 2015 [2] Perez, M.A., Zech, W.C., Donald, W.N., Fang, X., Methodology for evaluating inlet protection practices using large-scale testing techniques, Journal of Hydrologic Engineering, Volume 20, Issue 4, 1 April 2015, Article number 04014049 [3] Klein, P.M., Coffman, R., Establishment and performance of an experimental green roof under extreme climatic conditions, Science of the Total Environment, Volume 512-513, April 05, 2015, Pages 82-93 [4] Bonoli, A., Conte, A., Maglionico, M., Stojkov, I., Green roofs for sustainable water management in urban areas, Environmental Engineering and Management Journal, Volume 12, Issue S11, 2013, Pages 153-156

[7] Ramezani et al, Pushing galvanized steel strips in foam concrete, International Journal of Advanced Design Engineering, (2013) 12 p
[9] Zdzisława Owsiaka, Anna Sołtysa, Przemysław Sztąboroskib, Monika Mazurb, Properties of autoclaved aerated concrete with halloysite under industrial conditions, 7th Scientific-Technical Conference Material roblems in Civil Engineering.
[10] Guo-Wei ZHANG, Bo-Shan CHEN, Hui WU, Wei XIAO, Research on Bending Performance and Engineering Application of Autoclaved Aerated Concrete Roof Panel, International Conference on Mechanics and Civil Engineering (ICMCE 2014).
Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material, Beijing University of Civil Engineering and Architecture, Beijing, China 100044(2014) 1025-1030 [11] Ali J.
Struct. & Civil Engg.

Mechanical Behavior Analysis of Reinforced Concrete Column Strengthening with Shear Wall Peng Tian 1,a, Xudong Shi 2,3, Yuanqing Wang 2,3,b and Yannian Zhang 1 1 College of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China 2 Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing 100084, China 3 Detecting Center of Structure Engineering of Tsinghua University, Beijing 100084, China atianpeng8224698@126.com,bwang-yq@mail.tsinghua.edu.cn Keywords: reinforced concrete column; hysteresis curve; axial load level; finite element; ductility.
Guo, Reinforced concrete structure reinforcement and reconstruction method research and engineering application, Hunan University, 2005
Yasar Kaltakci, Murat Ozturk, An experimental study on the strengthening of non-ductile reinforced concrete frames via external shear wall, European Journal of Environmental and Civil Engineering, 16 (2012) 59-76
Yao, Dynamic characteristics of flange frame column structure, Journal of Architecture and Civil Engineering, 6 (2009) 57-62
Elnashai, Static pushover versus dynamic collapse analysis of RC buildings, Engineering Structures, 3 (2001)

., Wuhan, China, 430000 4The 5th Construction Company of CCCC Second Harbor Engineering Co.
Design and construction of Humen Pearl River Bridge[A].in Proceedings of the eighth annual meeting of the China Civil Engineering Society[C].Beijing: Tsinghua University Press,1998
Jiangyin Yangtze River Highway Bridge in Building[A].in Proceedings of the eighth annual meeting of the China Civil Engineering Society[C].Beijing: Tsinghua University Press,1998
Introduction to Hong Kong three suspension system designed long bridge, construction and monitoring systems[A].in Proceedings of the eighth annual meeting of the China Civil Engineering Society[C].Beijing: Tsinghua University Press, 1998
[6] Ruizheng Xie, Guoji Cen. 21st Century super macro planning to construction project in two phases [A].in Proceedings of the eighth annual meeting of the China Civil Engineering Society[C].Beijing: Tsinghua University Press,1998.

Ground Source Heat Pump Application in Cold Areas for Energy Conservation Chunyu Ran1, a, Bojiao Yan2, b 1College of Civil and Environmental Engineering, Jilin Architectural and Civil Engineering Institute, Changchun, 130118, China 2College of Civil and Environmental Engineering, Jilin Architectural and Civil Engineering Institute, Changchun, 130118, China aranchunyu@hotmail.com, b474027025@qq.com Key Words: ground source heat pump; groundcoupled heat pump; severe cold and cold areas; energy conservation and environmental protection Abstract: This essay briefly introduces the heat pump technology, analyzes the characteristics of this technique in energy conservation and environmental protection, illustrates the feasibility and superiority of the application and popularization of the ground source heat pump in severe cold and cold areas, whose cold and heat sources are based on the Soil, finally points out problems which exist in the technology and puts forward the solution
Then many Scientists and engineers did a lot of researches on Heat Pump, and it lasted for 80 years.
The ground source heat pump, as a branch of heat pump technology application, is a heating-in-winter and cooling-in-summer engineering application technology on buildings from the ground or water as the heating or cooling source, and it is a new technology in engineering applications. 1.3 Limits of Ground Source Heat Pump.

The Effect of Steel Ring Width Variations as the External Confinement on Load – Moment Interaction Behavior of Reinforced Concrete Column ENDAH Safitri1,a, ISWANDi Imran2,b , NUROJI3,c, and SHOLIHIN Asa ad1,d 1Sebelas Maret University, Dept. of Civil Engineering, Indonesia 2Institute of Technology Bandung, Dept. of Civil Engineering, Indonesia 3Diponegoro University, Dept. of Civil Engineering, Indonesia asafitri47@gmail.com, biswandiimran@gmail.com, cnuroji.undip@gmail.com, dsholihinasad@gmail.com Keywords : column, concrete, external confinement, interaction diagram Abstract.
References [1] Durga Madhaba Padhi, and Rama Seshu D, Effect of Confinement on Load-Momen Interaction Behavior of Reinforced Concrete Column, International Journal of Emerging Technology and Advanced Engineering, Vol.3, Issue 5, May 2013, pp 560-566 [2] G.D.
Base, Helical Reinforcement in The Compression Zone of Concrete Beams, Constructional & Engineering, December 1962., pp. 456-460 [3] I.
Pristley, and R.Park, Theoretical Stress-Strain Model for Confined Concrete, ASCE Journal of Structural Engineering, Vol.114, No.8, Aug. 1988, pp. 1804-1826 [5] J.
Lubell, Rehabilitation and Repair of Reinforced Concrete Short Columns with External Steel Collars, Structural Engineering Report No.281, October 2008, Department of Civil & Environmental Engineering, University of Alberta

Comparison of Two Different Modes of Inverse Analysis Used For Determination of Moisture Diffusivity of Building Materials Jan Kočía, Zbyšek Pavlíkb, Robert Černýc Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thakurova 7, 166 29 Prague 6, Czech Republic ajan.koci@fsv.cvut.cz, bpavlikz@fsv.cvut.cz, ccernyr@fsv.cvut.cz Keywords: inverse analysis, moisture diffusivity, genetic algorithms, K-spline, Boltzmann, Matano Abstract.
For the application of Boltzmann-Matano method new software tool called K-Spline was developed at Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague.
These parameters were measured at Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague and were published in [16].
Bernardino, Genetic Programming in Civil, Structural and Environmental Engineering, Computational Technology Reviews, vol. 4, 2011, pp. 115-145
Kučerová, Improvements of real coded genetic algorithms based on differential operators preventing premature convergence, Advances in Engineering Software, vol. 35(3-4), 2004, pp. 237-246

Effect of Reinforcement Size on Concrete Crack Width with the Same Reinforcement Ratio Shi Nannana, Huang Dahaib, Zhang Runxiaoc Department of Civil Engineering, Beihang University, Beijing 100191,China asnn@dae.buaa.edu.cn, bhuangdh@tsinghua.edu.cn, ccrainshower@gmail.com Key words: Reinforced concrete; Crack width; FEM; Diameter Abstract.
According to the engineering experience, the smaller diameter steel bars are superior to the bigger ones with the same reinforcement ratio consideration.
In 1982, the United States civil engineering society published a review, which involved the concrete crack, bond-slip relationship between steel bar and concrete, etc [2].
Furthermore, the proposed method can be extended to other engineering cases with some modifications.
Journal of Architecture and Civil Engineering”, Vol. 24 (2007), p. 69-70 [5] Li Fumin, Meng Shaoping: “Calculating of Expansion Joint Spacing of Reinforced Concrete Frame Structures”.