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

被引：0

作者：

Wang, Jiru ^{[1
]}

Zhang, Haibo ^{[1
]}

Zhu, Yu ^{[1
]}

Yan, Zhaoxia ^{[1
]}

Chai, Hucheng ^{[1
]}

机构：

[1] Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo,Henan,454000, China

来源：

Construction and Building Materials | 2022年 / 319卷

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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). © 2021

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