Plastic Shrinkage Cracking in Internally Cured Mixtures Made with Pre-wetted Lightweight Aggregate
Ryan Henkensiefken, Peter Briatka, Dale P. Bentz, Tommy Nantung, Jason Weiss
The incorporation of pre-wetted lightweight aggregates (LWA) has been used to reduce the shrinkage cracking associated with self-desiccation in the hardened state. Little research however exists which shows the influence of internal curing on the formation of plastic shrinkage cracks. The paper presents a background on the formation of plastic shrinkage cracks and then presents results from a study that examined mortar and concrete systems with pre-wetted LWA. Specifically the results indicate that the incorporation of pre-wetted LWA can reduce the settlement and formation of plastic shrinkage cracks. It is shown that water will preferentially leave the LWA thus resulting in a system which remains more saturated.
, Briatka, P.
, Bentz, D.
, Nantung, T.
and Weiss, J.
Plastic Shrinkage Cracking in Internally Cured Mixtures Made with Pre-wetted Lightweight Aggregate, Concrete International, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901532
(Accessed February 27, 2024)