Technical Questions

ACI Committees, Membership, and Staff have answered common questions on a variety of concrete related topics.

Aggregate blending

Q. What is aggregate blending and why is it done?


A. Aggregate blending is the process of intermixing two or more fine or coarse aggregates to produce a combination with improved grading or other properties. ACI PRC-211.7-20 “Guide for Proportioning Concrete Mixtures with Ground Calcium Carbonate and Other Mineral Fillers” and ACI 211.6T-14 “Aggregate Suspension Mixture Proportioning Method” discuss proportioning methods that could be used to improve aggregate gradation through blending.


References: ACI PRC-211.7-20; ACI 211.6T-14; ACI 211.1-91

Topics in Concrete: Aggregate; Mixture Proportioning of Concrete

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