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

被引：34
|
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).
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页数：9
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