FraMCoS 3 1998 Gifu, Japan

Crack Formation around Aggregates in High-Shrinkage Cement Paste

An investigation of cracking around aggregates embedded in high-shrinkage cement paste has been carried out. For this purpose a set of models are set up to determine the stresses inside a cylindrical inhomogeneity as a result of shrinkage in the…

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Year 1998
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Abstract

An investigation of cracking around aggregates embedded in high-shrinkage cement paste has been carried out. For this purpose a set of models are set up to determine the stresses inside a cylindrical inhomogeneity as a result of shrinkage in the surrounding cement paste. The stress intensity factor at a crack tip near the cylinder is also included in the models. Results from calculations based on the models are compared with test results. The tests are carried out on specimens consisting of a granite cylinder embedded in a high shrinkage cement paste. The initiation of cracks and crack growth is studied as a function of time using a microscope.