Silpro C-21

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C-21 ALL ACRYLIC® is a water-based, cement modifier admix/internal bonding agent that enhances the performance properties of cementitious mortars and coatings. And when you add it to the mix, it forms a plastic matrix, or film, that helps retain water and promotes cement hydration, resulting in improved compression(crushing) strength without wet curing.
It gives Portland cement and gypsum mixes greatly improved tensile and flexural strength, flexibility, and maximum adhesion to old or new concrete surfaces for patching, grouting, or coating.C-21 ALL ACRYLIC® increases the abrasion, chemical, and water resistance of these mixes making them ideal for application on floors, ramps, sidewalks, masonry walls, etc. It is classified as a nonreemulsifiable bonding admixture.