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《Sichuan Building Science》 2010-02
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Experimental study on durability of concrete after exposure to high temperature

JIANG Fuxiang1,2,YU Kuifeng3,4,ZHAO Tiejun1,LU Tongchun1(1.School of Civil Engineering,Qingdao Technological University,Qingdao 266033,China;2.Xi'an University of Archtecture & Technology,Xi'an 710055,China;3.School of Civil Engineering,Shijiazhuang Railway Institute,Shijiazhuang 050043,China;4.Logistics Department,Military Area in Shandong Province,Jinan 250014,China)  
Based on experiments of capillary absorption after relative lower high temperature to four different types of concrete,this paper researches on the effect of high temperature on durability of concrete.The results show that compressive strength doesn't reduce obviously till the temperature is up to 300℃,but it is increased sometimes.However,when temperature is between 150℃ to 300℃,water absorption will be changed obviously than basic ones and concrete permeability will be emhanced.Rules are similar to the four different types of concrete employed in this present paper.
【Fund】: 国家自然科学重点资助项目(50739001);; 国家“973”计划课题(2009CB623203)
【CateGory Index】: TU528
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