The maximum particle size and the grading of coarse aggregate, the cement content and water/cement ratio of the concrete were kept constant. A portion of the sand in the ordinary Portland cement ( OPC ) 42.5 concrete was replaced by a mineral admixture such as fly ash (FA), limestone filler, sandstone filler or silica fume (SF). Results of both the sorptivity coefficient and the compressive strength of OPC 42.5 concretes with these mineral admixtures, and concretes with OPC 32.5, blended cement (BC) or trass cement (TC) are reported. They indicate that the sorptivity coefficient of concrete decreases as the compressive strength of concrete increases. It is also shown that the sorptivity coefficient of concrete is very sensitive to the curing condition. The effect of curing condition on the sorptivity coefficient of concrete seems to be higher in low-strength concretes. 23 refs.