Permeability of high-performance concrete incorporating presoaked lightweight aggregates for internal curing
X Liu, M-H Zhang
MAGAZINE OF CONCRETE RESEARCH | THOMAS TELFORD PUBLISHING | Published : 2010
This paper presents an experimental study on the effect of presoaked lightweight aggregates (LWAs) for internal curing on water permeability, water absorption and resistance of concrete to chloride-ion penetration in comparison with those of a control concrete and a concrete with shrinkage reducing admixture (SRA) of similar water/cement ratios (w/c). In general, the concretes with LWA particles had initial water absorption, sorptivity and water permeability similar to or lower than those of the control concrete and the concrete with SRA. The charges passed, chloride migration coefficient and chloride diffusion coefficient of such concretes were in the same order as those of the control conc..View full abstract
Grateful acknowledgement is made to National University of Singapore for providing scholarship for the first author. Thanks also go to undergraduate student Dang Yang who contributed to the experimental work. Acknowledgement is also made to Dr Chia Kok Seng for reviewing the manuscript and valuable discussion.