Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 123, Issue -, Pages 198-206Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2016.07.007
Keywords
Alkali-activated slag (AAS); Autogenous shrinkage; Internal curing; Internal relative humidity; Self-desiccation; Superabsorbent polymer (SAP)
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Funding
- Chung-Ang University Graduate Research Scholarship
- Basic Science Research Program through the National Research Foundation of Korea (NRF-South Korea) - Ministry of Science, ICT and Future Planning [NRF-2013R1A1A1011679]
- Construction Technology Research Program - Ministry of Land, Infrastructure and Transport of Korean government [16SCIP-B103706-02]
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This study experimentally investigated the effect of internal curing by superabsorbent polymers (SAPs) for mitigating autogenous shrinkage of alkali-activated slag (AAS) mortars. Measured were the compressive strength, the internal relative humidity (IRH), and autogenous shrinkage of AAS mortars incorporating different dosages of SAPs. Test results showed that as the dosage of SAPs increased, the reduction of IRH owing to self-desiccation and autogenous shrinkage both decreased, indicating that the SAPs can be effectively used as internal curing agents. The resulting modeling of the internal curing zone is expected to be useful in determining the appropriate dosage of SAPs in AAS mortars. (C) 2016 Elsevier Ltd. All rights reserved.
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