Abstract
The aim of this research was to examine the influence of such crack parameters as crack width and crack surface roughness on chloride ingress into concrete. Two types of transecting, parallel-wall cracks were created by either saw-cutting or splitting concrete specimens. As a result, smooth and rough surface cracks with widths ranging from 0.08-0.68 were obtained. Cracked and uncracked samples were exposed to a 40-day chloride bulk diffusion test. In addition, lateral movement of chlorides from the crack wall into the bulk of the concrete sample was evaluated using scanning electron microscopy combined with energy dispersive x-ray analysis. Findings are given and discussed.
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