SRA-157

Shrinkage-Reducing Admixture

SRA-157 is a liquid shrinkage-reducing admixture that can be used in any Portland-cement-based product to significantly reduce drying shrinkage. SRA-157 is not expansive material, but rather functions by blocking capillaries of pore water, which is the major mechanism that causes drying shrinkage in concrete. When added to concrete at a rate of 2% by weight of cementitious material, SRA-157 can reduce shrinkage by up to 80% at 28 days of age and by up to 50% at one year of age.