Technical Questions

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



What is the importance of consolidation on strength?

Q. What is the importance of consolidation on strength?

 

A. Consolidation is intended to minimize the amount and size of entrapped voids. Elimination of entrapped air voids results in an increase in strength. In adequately consolidated concrete, the amount of entrapped air is generally less than 2%. The strength is increased about 5% for each 1% of entrapped air that is removed during consolidation.

 

References: SP-1(02); ACI 309R-05

Topics in Concrete: Concrete Fundamentals; Consolidation; Placing

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