Abstract
Factorial design approach was undertaken to determine the effect of initial moist-curing duration (0 and 6 days) on properties of high-performance concrete (HPC) made with different water-to-cementitious materials ratios (w/cm) of 0.30 and 0.40 and sand substitution rates with lightweight sand (LWS) of 0 and 30 %, by volume. Mechanical properties of HPC are shown to be mainly affected by w/cm and total shrinkage of concrete by the LWS replacement rate and initial moist-curing period. It should be noted that concrete made with 30 % LWS replacement that did not receive any moist-curing exhibited lower shrinkage than moist-cured concrete prepared without any LWS, regardless of the w/cm. Combined use of 30 % LWS and 7 days of moist curing can lead to greater increase in compressive strength and larger decrease in total shrinkage compared to the use of 30 % LWS without moist curing or 7 days of moist curing without LWS. The use of LWS, however, is more practical and efficient to reduce shrinkage of HPC for deep concrete elements. © 2012 RILEM.
Recommended Citation
S. D. Hwang et al., "Effect of Moist Curing and Use of Lightweight Sand on Characteristics of High-performance Concrete," Materials and Structures/Materiaux et Constructions, vol. 46, no. 1 thru 2, pp. 35 - 46, Springer, Jan 2013.
The definitive version is available at https://doi.org/10.1617/s11527-012-9881-7
Department(s)
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Autogenous shrinkage; Drying shrinkage; Experimental design; High-performance concrete; Internal curing; Lightweight sand
International Standard Serial Number (ISSN)
1359-5997
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Springer, All rights reserved.
Publication Date
01 Jan 2013
