Publication details

The influence of blast-furnace slag hydration products on microcracking of concrete

Investor logo
Title in English The influence of blast-furnace slag hydration products on microcracking of
Authors

BOHÁČ Martin GREGEROVÁ Miroslava

Year of publication 2009
Type Article in Periodical
Magazine / Source Materials Characterization
MU Faculty or unit

Faculty of Science

Citation
Field Geology and mineralogy
Keywords granulated blast furnace slag; microcracks; concrete; hydration process
Description New hydration products of ground granulated blast-furnace slag are formed during the hydration process of Portland slag cement concrete. Spatial distribution of microcracks in concrete is related also to newly formed slag hydrates. The chemical composition of hydration products is variable and unstable. The Si/Ca ratios rise in hydration products near the unhydrated slag core significantly. There is also a certain increase of Mg and Al content in the central parts of hydration rims. The scope of the paper is to find a relation between slag hydration products and the process of microcracking. The amount of microcracks was reduced in concretes with a lower content of vitreous fraction where the slag basicity was high. Neoformation of hydration products is accompanied by volume changes, which can lead to concrete microcracking.
Related projects:

You are running an old browser version. We recommend updating your browser to its latest version.

More info