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Properties and simulation analysis of foamed concrete with polypropylene fiber


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Properties and simulation analysis of foamed concrete with polypropylene fiber
Sun Yafei12Geng Fei1Gao Peiwei1Li Haoran1Zhang Lifang1Liu Hongwei12
1.Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China; 2.Department of Civil Engineering,Yancheng Institute of Technology,Yancheng 224051,China
foamed concretes mix proportion polypropylene fiber property finite element
The effect of water binder ratio and dosages of polypropylene fiber and fly ash on the properties of grade-400 foam concretes are investigated by orthogonal test.The results show that the optimum mix proportion for grade-400 foam concretes is:water binder ratio of 0.58,0.10% of polypropylene fiber and 0% of fly ash.The compressive strengths of foam concretes are 0.76 MPa at 7 days and 1.32 MPa at 28 days,respectively.The foam concretes possesse a water absorption rate of 17.5%,a dry shrinkage value of 0.98 mm/m and a thermal conductivity of 0.072 W/(m·K).The stress and displacement of in-cast-in foamed concretes enclosing wall are all satisfied under the wind load or the horizontal seismic load,providing theoretical basis for its application.


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Last Update: 2016-06-30