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《Concrete》 2008-01
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Fracture performance of high strength concrete

ZHANG Guo-qiang,LI Rui-ge(Department of Civil Engineering,Pingdingshan Institute of Technology,Pingdingshan 467001,China)  
With the strength of concrete increasing it becomes more brittle,which restrains its development and application.The fracture toughness,critical crackle propagation load,critical crack tip opening displacement and characteristic length of concrete were studied by adding different mineral admixtures.And fracture performances of those concretes were compared and analyzed.Testing results show that when moderate fly ash is added,concrete toughness increases,but the strength doesn't change very much.
【CateGory Index】: TU528.31
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