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Experiment and Research of the basic mechanical properties of reactive powder concrete

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Tutor: HuangZhengYu
School: Hunan University
Course: Building Materials
Keywords: RPC200,axial compression,direct shearing,pure shearing,bending toughness,size ef
CLC: TU528
Type: Master's thesis
Year:  2002
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In this paper, the effect of steel fiber content on RFC compressive strength has been investigated. The results showed that steel fiber can increase the compressive strength of RFC, but only when the steel fiber content is higher than a critical value and the W/B of RFC is lower than a critical value that the steel fiber could increase the compressive strength of RFC significantly. The stress-strain curve of axial compression of RPC200 has been gained by using the rigid-jointed machine to increase rigidity of testing machine. The test results indicated that RTC200 have very high compressive strength and excellent deformation performance. The excellent mechanics performance of RPC200 is profited from steel fiber. A kind of test specimen with same height and different width has been designed for the pure shearing test. It indicated that the failure mechanics of the direct shearing test and the pure shearing test of RPC200 are different. The toughness of RPC200 can be got from the load-deflection curve by bending test. Comparing toughness index number, RPC200 displayed excellent bending ductility. The size effect has been researched in this article and the test results showed that the homogeneity of RTC200 is better than ordinary concrete.The results of those basic mechanics performance indicated that RPC200 is a kind of ultra high performance concrete with the superior performance.
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