Specifications include, but are not limited to: Penetrating Water Repellent bids shall be for the following products or approved equal: TK Products TK 590-100 (4hr Dry Time Bid), BASF MasterProtect® H 1000 (4hr Dry Time Bid); Provide a penetrating water repellent treatment solution that consists of an organosilicon compound dissolved in a solvent carrier that, when applied, produces a hydrophobic surface covalently bonded to concrete. Use the following organosilicon compound: Alkyl-Alkoxysilane Provide a solution meeting the following requirements: Treated concrete is surface dry a maximum of 4 hours after application for the 4hr Dry Time Bid Solvent carrier leaves less than 1 percent residue upon evaporation Contains a minimum of 100 percent solids Certified to meet or exceed the performance criteria listed below based on a single application of the solution according to the specified rate of coverage Does not stain, discolor, or darken concrete Application does not alter the surface texture or form a coating on concrete surfaces Compatible with the use of special surface finish texture coatings
