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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Pre-soaked Lightweight Fine Aggregates as
Additives for Internal Curing in Concrete
Author(s): Y. Wei and W. Hansen
Publication: Special Publication
Appears on pages(s): 35-44
Keywords: autogenous shrinkage; internal curing; moisture warping; self-desiccation
shrinkage; self-induced stress
Abstract:High-performance concrete (i.e. water-cementitious ratio below 0.40) for bridge-deck applications has been shown to develop shrinkage-related cracking. This study explores the concept of internal curing using pre-soaked lightweight fine aggregate (LWFA) as partial replacement of sand for mitigating autogenous shrinkage and moisture warping. Concretes with water-cementitious ratios (w/c) of 0.35 and 0.45 containing LWFA to sand ratios of 20% and 40% by volume were investigated. Results show that pre-soaked LWFA is effective in mitigating autogenous shrinkage but also reduces
slab uplift from moisture warping due to combined drying shrinkage at the top surface and wetting at the bottom surface.
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