Effect of superabsorbent polymer on the foam-stability of foamed concrete

Aiming to increase the properties of foamed concrete via improving the foam-stability, crosslinked poly sodium acrylate superabsorbent polymer (SAP) was used to produce foamed concrete. Effect of SAP on the stability of foam, cement paste, and foamed concrete were investigated. Meanwhile, the yield...

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Bibliographic Details
Published inCement & concrete composites Vol. 127; p. 104398
Main Authors Yuanliang, Xiong, Chao, Zhang, Chun, Chen, Yamei, Zhang
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.03.2022
Subjects
Foam-stability
Foamed concrete
Pore structure
Superabsorbent polymer
Superabsorbent polymer
Foamed concrete
Foam-stability
Pore structure
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Summary:Aiming to increase the properties of foamed concrete via improving the foam-stability, crosslinked poly sodium acrylate superabsorbent polymer (SAP) was used to produce foamed concrete. Effect of SAP on the stability of foam, cement paste, and foamed concrete were investigated. Meanwhile, the yield stress development and the attraction force of the SAP to the foam (FSAP) were correlated to the foam-stability of foamed concrete. Experiment results reveal that the stability of foam and cement paste decreases with the addition of SAP, however, the incorporation of SAP improves the yield stress of cement paste, thus increasing the foam-stability of foamed concrete. In addition, the attraction force of the SAP to the foam (FSAP) can decrease the foam-stability of foamed concrete. The foamed concrete with appropriate type and amount of SAP tends to exhibit higher foam-stability and form more homogeneous pore structure, leading to better mechanical performance of foamed concrete.
ISSN:0958-9465
1873-393X
DOI:10.1016/j.cemconcomp.2021.104398