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Internal Curing: A 2010 State-of-the-Art Review
Internal Curing - A 2010 State-of-the-Art Review
By Dale Bentz, National Institute of Standards and Technology
and W. Jason Weiss, Purdue University
The American Concrete Institute in 2010 defined internal curing as "supplying water throughout a freshly placed cementitious mixture using reservoirs, via pre-wetted lightweight aggregates, that readily release water as needed for hydration or to replace moisture lost through evaporation or self-desiccation" (American Concrete Institute, 2010). While internal curing has been inadvertently included in many lightweight concretes produced within the past 100 years, it is only within the first decade of the 21st century that this technology has been intentionally incorporated into concrete mixtures at the proportioning stage, using a variety of materials including pre-wetted lightweight aggregates, pre-wetted crushed returned concrete fines, superabsorbent polymers, and pre-wetted wood fibers.
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