US: Fortera says that its ReAct low-carbon cement product is the first to meet all six ASTM C1157 performance categories simultaneously. Previously, it says, this level of versatility typically required four separate Portland cement formulations. It added that, with one formulation covering all six categories, ReAct reduces procurement complexity and streamlines mix design, enabling contractors to use a single cement instead of multiple cementitious products for different parts of the same project. Independent testing by Construction Testing Services validated the product’s performance across the standard's eight test requirements.
Craig Hargis, Vice President of Products at Fortera, said “This certification confirms that ReAct performs to the industry's established standards.” He added, “For years, lower-carbon options have been seen as a compromise on either performance or cost. ReAct shows that contractors do not have to choose. It meets the strength and durability requirements they expect, avoids a green premium, and fits into the specifications and infrastructure already in use.”
ASTM C1157 is a performance-based standard that evaluates cement on measurable outcomes rather than on its chemical composition. The specification covers factors such as compressive strength, air content, set time, fineness, density, heat of hydration, mortar expansion, and sulphate expansion. ReAct has met the requirements for all six performance categories under the standard: general use, high early strength, moderate sulphate resistance, high sulphate resistance, moderate heat of hydration, and low heat of hydration.
Fortera operates a 15,000t/yr plant in Redding, California. The company uses a technology that captures CO₂ emissions from traditional cement production and converts them into a mineral form for low-carbon cement.
