Effect of viscosity type modifying admixture on porosity, compressive strength and water penetration of high performance self-compacting concrete

The influence of viscosity modifying admixture (VMA) on the air-content and workability of high performance self-compacting concrete (HPSCC) is analyzed in the paper. The purpose of this study is to examine the influence of the type of admixtures on air-voids parameter, open porosity, compressive strength and resistance to water penetration of HPSCC at constant water on cement ratio, type and volume of aggregate and volume of cement paste. The results presented in the paper showed that SPs and VMAs from different sources cannot be used interchangeably, even if they appear to have a similar chemical composition.