Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of healing products on the self-healing performance of cementitious materials with crystalline admixtures
Highlights The autogenous healing characteristics of cementitious materials was studied. The phase composition of self-healing products was investigated. The self-healing performance was evaluated by water flow tests. The contents of the self-healing products increased with GGBS, CSA, and CAs. The phase composition of self-healing products affects self-healing performance.
Abstract This study examined the correlation between the self-healing products and self-healing performance of cementitious materials with ground granulated blast-furnace slag, a calcium sulfoaluminate expansion agent, and crystalline additives. Self-healing products were collected through artificial cracks produced by overlapping paste slice specimens. Their phase composition was analyzed through thermogravimetry/derivative thermogravimetry by classifying calcite, portlandite, and M70-200. The phase composition generated by internal curing was analyzed through back-scattered electron imaging, exhibiting calcite, C–S–H, and C–A–H. Self-healing performance was evaluated through a water flow test, demonstrating that the greater the contents of calcite and M70-200, the better the self-healing performance.
Effect of healing products on the self-healing performance of cementitious materials with crystalline admixtures
Highlights The autogenous healing characteristics of cementitious materials was studied. The phase composition of self-healing products was investigated. The self-healing performance was evaluated by water flow tests. The contents of the self-healing products increased with GGBS, CSA, and CAs. The phase composition of self-healing products affects self-healing performance.
Abstract This study examined the correlation between the self-healing products and self-healing performance of cementitious materials with ground granulated blast-furnace slag, a calcium sulfoaluminate expansion agent, and crystalline additives. Self-healing products were collected through artificial cracks produced by overlapping paste slice specimens. Their phase composition was analyzed through thermogravimetry/derivative thermogravimetry by classifying calcite, portlandite, and M70-200. The phase composition generated by internal curing was analyzed through back-scattered electron imaging, exhibiting calcite, C–S–H, and C–A–H. Self-healing performance was evaluated through a water flow test, demonstrating that the greater the contents of calcite and M70-200, the better the self-healing performance.
Effect of healing products on the self-healing performance of cementitious materials with crystalline admixtures
Park, Byoungsun (Autor:in) / Choi, Young Cheol (Autor:in)
18.10.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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