Superabsorbent polymers to seal and heal cracks in cementitious materials

RILEM Technical Letters

article

Didier Snoeck¹ 

[1] Magnel Laboratory for Concrete Research - Ghent University

关键词: Self-sealing;    Self-healing;    Multiple Cracking;    Strain-Hardening Cementitious Composites;    Hydrogels;    Superabsorbent polymers;   

DOI  :  10.21809/rilemtechlett.2018.64

学科分类：社会科学、人文和艺术（综合）

来源: RILEM Publications SARL

【 摘 要 】

Superabsorbent polymers (SAPs) are promising admixtures to improve properties in cementitious materials. Not only useful to mitigate autogenous shrinkage and to increase the freeze-thaw resistance, SAP particles may enhance self-sealing and self-healing in cementitious materials. The self-sealing leads to a regain in water tightness and promoted autogenous healing may prove to be useful to limit repair works caused by concrete cracking. By providing sufficient building blocks for healing, limiting the crack width by means of synthetic microfibers and inducing water by means of SAPs, a smart cementitious material is obtained. This material can be an excellent material to use in future building applications such as tunnel works and ground-retaining structures. This paper gives an overview of the current status of the research on SAPs in cementitious materials to obtain sealing and healing.

【 授权许可】

CC BY