CHEM-CRETE® MCE™

Chem-Crete^® MCE^TM (MCE^TM) is a multi-crystalline admixture and an innovative concrete waterproofing material. It is a significant step forward in increasing long-term concrete performance and durability that functions effectively with both Portland Cement and 1L (Limestone) Cement. It is categorized according to ASTM C494/C494M as Type S admixture. MCE^TM is a multi-compound aqueous solution that is mixed into fresh concrete during the batching process resulting in a uniform distribution throughout the cement paste. MCE^TM cures within cement hydration stages forming a network of hygroscopic and hydrophilic crystals (pore blocking) coupled with molecular layers (pore lining) that become an integral part of concrete structure. The porosity and permeability of resulting concrete structure is significantly decreased leading to concrete protection against nearly all types of water-related attacks and thereby enhances both the concrete durability and structure sustainability. The material performance has been shown through extensive laboratory studies and field trials.

A key feature of MCE^TM is its ability to actively manage water in the concrete thereby minimizing or eliminating moisture-related damage including freeze/thaw cycling and alkali silica reactivity (ASR). In addition, by controlling the amount of water entering the concrete, chloride intrusion is minimized, mold growth is inhibited, and overall concrete sustainability is greatly enhanced. Furthermore, MCE^TM improves the workability, enhances the hydration of the cement, and increases the strength of fully cured concrete. MCE^TM may allow for the elimination of fly ash in concrete for ASR mitigation.

MCE^TM is applicable to both central mixed and ready mixed plant operations.  The method of incorporating the material into the concrete during the batching process is somewhat dependent on the specific batching equipment. However, MCE^TM is generally added into the water feed similar to chemical admixtures.

MCE^TM can be added to a concrete mix at a batching plant, in a volumetric mixing truck or at a job site similar to adding typical chemical admixtures.

Concrete with MCE^TM can be placed using traditional methods, including slipform paving.

Dr. Mike Ayers inspects concrete curb and gutter with the MCE^TM admixture