Poor quality and unconventional aggregates being used (i.e. manufactured sand) for many applications: Quality associated with clay negatively impact production costs and performance; Results in plastic concrete with poor rheological properties (i.e. pump, flow, consolidation issues); Lower quality and less durable concrete produced when aggregate deficiencies not managed effectively; Increased process variability, production costs and quality control for aggregate and ready-mix produce.

What to do with millions of yd3 of concrete that’s returned every year? NRMCA estimates 1-5% of all fabricated ready mix concrete is returned (~284 million m3, or 371 million yd3) produced in N.A. in 2019).

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CLARENA® Clay Deactivation Technology

Reacts with clay through adsorption and intercalation, thus reducing absorption of water and admixture. Extends quarry life with quality aggregates, better fines management & additional yield and productivity. Consistent admixture dosage and repeatable slump and air performance. Potential to reduce quarry aggregate waste.

CLARENA® concrete admixtures mitigate the negative effects of aggregate shape, gradation, and clay content, and increase the usable amount of aggregate from a given quarry, while improving admixture performance and concrete quality. Discover more about CLARENA®.

CLARENA® MC Specialty Water Reducers

Increased slump and stability with specialty water reducing admixtures enabling the use of low cost aggregates and improved pumping & finishing with less cement. CLARENA® concrete admixtures mitigate the negative effects of aggregate shape, gradation, and clay content, and increase the usable amount of aggregate from a given quarry, while improving admixture performance and concrete quality. Find out more.

CLARENA® RC Sustainable Solution for Returned Concrete

Converts one cubic yard of returned concrete into two tons of usable, recycled, graded aggregates. CLARENA® RC converts plastic concrete to a well-graded granular form to be used in base material or as a partial replacement for virgin aggregate in concrete. Discover more.

DARAGRIND® specialty grinding aids

DARAGRIND® specialty grinding aids enable efficient grinding of calcium carbonate and other minerals, allowing the desired particle size distribution with reduced energy demand.

DARAGRIND®: Data Sheet