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《Concrete》 2005-10
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Measures to improve spalling resistance of high strength concrete at elevated temperature

YOU You-kun~1,QIAN Chun-xiang~2,MIAO Chang-wen~1 (1.Jiangsu Provincial Building Science Research Institute Co.Ltd.,Nanjing 210008,China; 2.Southeast University,Nanjing 210096,China)  
A quantitative method on concrete spalling degree under fire was proposed.The spalling restrain efforts on silica fume high strength concrete and fly ash high strength concrete blended with four kinds fiber,one polymer latex and coated with two fireproofing were study.Research shows that single polypropylene with a smaller diameter had a availability effort on restrain spalling.The calculating method on fire spalling-protected concrete column diameter which around the fiber was proposed and was described the effects on fire spalling-protected of amounts and diameter of blended fiber in concrete.Porosity structure analysis show porosity prominence elevation and a mount excursion of fired specimens when the blended had a availability anti-spalling efforts.A definite anti-spalling effort was affected by the performance of fire-proofing coating itself.
【Fund】: 教育部高等学校骨干教师计划、江苏省自然科学基金(BK99016);; 江苏省建设厅科技计划(JS200136);; 江苏省无机及其复合新材料重点实验室开放基金资助
【CateGory Index】: TU528.31
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