FraMCoS 3 1998 Gifu, Japan

Failure of Concrete under Uniaxial Compression: an Overview

In the paper an overview of :fracture of concrete subjected to uniaxial compression is given. Since the past few years, attention for compressive fracture has increased, in particular when it was found that localization of defonnations occurs in uniaxial compression…

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Year 1998
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Abstract

In the paper an overview of :fracture of concrete subjected to uniaxial compression is given. Since the past few years, attention for compressive fracture has increased, in particular when it was found that localization of defonnations occurs in uniaxial compression experiments on prisms with varying height. In addition an enonnous dependency of post-peak behaviour on frictional constraint caused by some type of loading platens hampers the of a unique stress-strain curve for concrete under compression. determination This implies that fracture mechanics principles apply. The :fracture process is complicated however because the amount of pre-critical crack growth is much larger than in tension, whereas frictional slip in cracks seems to ·contribute to the total compressive fracture energy as well. At this stage it is not clear which compressive stress-strain (or stress-displacement) diagram should be used for analyzing structures failing in compression.