Sika 705677 SikaCem® 190 Concrete Control 5 gal - SikaCem® 190 Concrete Control is a non-film forming, low VOC, amorphous colloidal silica topical additive (evaporation retardant and finishing aid) that is ideal for all decorative and colored concrete applications. Apply during floating and troweling of freshly placed concrete to control moisture loss. This allows proper hydration of the cement that will extend workability and makes finishing concrete flatwork easier and faster under adverse conditions such as wind, sun, high temperatures, or low humidity. SikaCem® 190 Concrete Control lubricates the surface and increases cream for a smoother finish, which makes troweling easier and faster. Colloidal silica densifies and improves surface consolidation resulting in increased compressive strength and abrasion resistance. SikaCem® 190 Concrete Control minimizes the potential for cold joints checking, crazing, curling, dusting, stains, and efflorescence on both standard and colored concrete.