My concrete countertops have a few small voids (created by trapped air). What is the best way to fill them?
Voids are best filled with a color-matched slurry, containing cement, pigment and an acrylic bonding agent. Large voids should be filled with slurry containing sand while smaller voids should be filled with slurry containing NO sand at all, such as our CHENG Pro-Formula Acrylic Slurry. The CHENG Concrete Densifying Agent is an admixture that drastically minimizes the air bubbles that develop when mixing the concrete.