Technical Questions

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

Aging of concrete

Q. What is the effect of aging on concrete?


A. Aging, if one means merely the effect caused by the passage of time, has no effect on concrete. Of course concrete sets, hardens, gains strength, and exhibits reduced permeability with the passage of time, but it is not the passage of time alone that causes these things to happen. If the concrete is kept very cold, none of this will happen. If all moisture is removed, none of this will happen. Many or even most concretes are confronted with potential deteriorative service conditions. If the concrete has not been provided with immunity against these influences, it may well slowly deteriorate as time passes, but not simply because time passes. Concrete need not deteriorate.


References: SP-1(02); ACI 308R-16

Topics in Concrete: Concrete Fundamentals; Curing

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