Technical Questions

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

The ultimate objective in proportioning concrete

Q. What is the ultimate objective in proportioning the ingredients in concrete?


A. To find the combination of cementitious material, water, and aggregate that meets the requirements of a particular structure, portion of a structure, or series of structures at least cost. Correct proportioning should produce concrete with:

- Adequate workability for proper mixing, transporting, placing, consolidating, and finishing.

- Adequate strength, resistance to degradation, and dimensional stability for the purpose intended.


References: SP-1(02); ACI 211.1-91; ACI 211.4R-08; ACI PRC-211.7-20; ACI 211.6T-14

Topics in Concrete: Concrete Fundamentals; Mixture Proportioning; Specifications

Other Sources for Answers

Search other resources on the ACI website for answers to technical questions

Please enter this 5 digit unlock code on the web page.