| Smaller molecules of Lithium make the reaction more even and consistent, creating a denser surface. On the other hand, Sodium and potassium densifiers react inconsistently and irregularly, leaving clusters of calcium hydroxide, reacted and un-reacted, spread throughout the concrete surface resulting in a weaker, irregular bond. This is the basis for a potential problem if moisture should penetrate into the concrete substrate, initiating an Alkali Silica Reaction (ASR). C² lithium hardeners react with calcium elements in concrete, building strong and very stable silicate structures, maximizing and extending lithium reactivity. C² lithium hardeners also react with calcium hydroxide covering the substrate, forming complex tri-calcium silicate compounds that keep moisture out. These compounds block the micro pores in concrete, practically eliminating moisture absorption into the concrete substrate. Although these reactions are common to most surface densifiers, C² lithium hardeners react more completely and evenly than sodium and potassium. C² lithium hardeners will not contribute to map cracking or crazing and will not form silica gel to seal the concrete surface like sodium and potassium hardeners. C² lithium hardeners will not absorb water like sodium or potassium and are less water-soluble. Thus the concrete is more water resistant. www.cretecolors.com |
