Size effect of concrete and sandstone
article
A series of uniaxial tension experiments has been conducted to investigate the size effect on strength and fracture energy of concrete and sandstone. The experiments were carried on specimens of six different sizes in a scale range of 1:32. Depending on the material and the curing conditions a stronger or weaker size effect on the nominal strength occurred in the tests. The observed size effect was attributed to a combination of statistical size effect and strain gradients in the cross section of the specimens, which were caused by the specimen shape, load eccentricity and material inhomogeneity. The fracture energy was, irrespective of the type of material, found to increase with size going towards a horizontal asymptote for large sizes.
Topics
TNO Identifier
280428
ISSN
00467316
Source
Heron, 45(2), pp. 91-108.
Pages
91-108