SRA-157 is a liquid, shrinkage-reducing admixture, that can significantly decrease drying shrinkage in any Portland cement-based product. This 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 can reduce shrinkage (ASTM C 157) by up to 80% at 28 days of age and by up to 50% at one year of age.

Features and Benefits

• High level of shrinkage reduction that can eliminate cracking due to drying shrinkage in restrained concrete
• Reduces potential for cracking
• Improves aesthetics
• Increases water tightness of the mix
• Improves durability of the concrete
• Reduces creep and curling of slabs
• Decreases carbonation at the surface of slabs