ConCarb™ is a de-dusted mineral additive designed specifically for concrete and concrete ready-mix products to improve workability, fluidity, green strength, particle packing and more. It enhances savings through reduction in segregation and abrasion. Please ask us about the ACI Guide for Proportioning Concrete Mixtures with Ground Limestone and Other Mineral Fillers (ACI 211.7R-15) and the ASTM Standard Specification for Ground Calcium Carbonate and Aggregate Mineral Fillers for use in Hydraulic Cement Concrete (ASTM C1797-16).