Early age hydration and autogenous shrinkage of blended cement containing brick powder

被引：8
|
作者：
Luo, Xu [1 ,2 ]
Gao, Jianming [1 ,2 ]
Li, Shujun [1 ,2 ]
Zhao, Yasong [1 ,2 ]
Chen, Gaofeng [1 ,2 ]
Liu, Cheng [1 ,2 ]
机构：
[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Peoples R China
[2] Jiangsu Key Lab Construct Mat, Nanjing 211189, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 397卷
基金：
中国国家自然科学基金;
关键词：
Brick powder; Early age hydration; Autogenous shrinkage; Relaxation time distributions; Internal curing; WASTE CLAY BRICK; SUPERABSORBENT POLYMERS; DRYING SHRINKAGE; MICROSTRUCTURE; STRENGTH; INDUSTRY; DEFORMATION; MECHANISM; CONCRETE; PASTES;
D O I：
10.1016/j.conbuildmat.2023.132455
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Early age hydration and autogenous shrinkage of blended cement containing brick powder (BP) was investigated using hydration heat, internal relative humidity (IRH) and 1H NMR methods. The results show that BP can promoting the early nucleation and growth process of cement. The unique porous structure of BP gives it water absorption property, which plays a role in internal curing. The internal curing effect of BP reduced the rate of decrease of IRH in cement paste and effectively reduced the autogenous shrinkage of cement paste. These findings suggest that moderate adjustment of the dosage of BP can effectively promote the hydration and control the autogenous shrinkage of cement-based materials.
引用
收藏
页数：12
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