Acrylamide in-situ polymerization of toughened sulphoaluminate cement-based grouting materials

被引：28

作者：

Wang, Jiru ^{[1
]}

Zhang, Haibo ^{[1
]}

Zhu, Yu ^{[1
]}

Yan, Zhaoxia ^{[1
]}

Chai, Hucheng ^{[1
]}

机构：

[1] Henan Polytech Univ, Sch Mat Sci & Engn, Henan Key Lab Mat Deep Earth Engn, Jiaozuo 454000, Henan, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 319卷

基金：

中国国家自然科学基金;

关键词：

Sulphoaluminate cement-based grouting materials; Acrylamide; In-situ polymerization; Compression toughness; Stress -strain model;

D O I：

10.1016/j.conbuildmat.2021.126105

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, the toughening effect of acrylamide monomer (AM) on sulphate aluminate grouting material (SCGM) is investigated by axial compression, FT-IR, TGA and SEM. The results show that the toughness index (R) of acrylamide in-situ polymerization modified sulphoaluminate cement-based grouting material (PAM-SCGM) is 20.56 times than that of the cement paste, due to the in-situ polymerisation of acrylamide monomer forming an organic-inorganic double network structure with cement hydrides. Additionally, a new model of axial compressive stress-strain curves for PAM-SCGM is built, including Zone I (elastic stage), Zone II (yield softening stage), Zone III (plastic stage) and Zone IV (strengthening stage).

引用

页数：9

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