Can the strength gain of concrete that has ceased due to drying out at early ages be restored by moist curing?

Q. Can the strength gain of concrete that has ceased due to drying out at early ages be restored by moist curing?

A. Yes, partially, but at some sacrifice of strength. The most rewarding period for curing is the first few days or weeks. Continued moist curing after an early period of drying will continue to add strength, but there is always the possibility that damage from shrinkage may have resulted from early drying.

References: SP-1(02)

Topics in Concrete: Concrete Fundamentals