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 211.7R-15 “Guide for Proportioning Concrete Mixtures with Ground Limestone 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 211.7R-15; ACI 211.6T-14; ACI 211.1-91

Topics in Concrete: Aggregate; Mixture Proportioning

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