Effect of Internal Curing with Superabsorbent Polymers on Bond Behavior of High-Strength Concrete

被引：0

作者：

Lei, Xiao ^{[1
]}

Wang, Rui ^{[1
]}

Jiang, Hanwan ^{[2
]}

Xie, Faxiang ^{[1
]}

Bao, Yanni ^{[3
]}

机构：

[1] College of Civil and Transportation Engineering, Hohai University, 1 Xikang Road, Nanjing, Jiangsu,210098, China

[2] College of Engineering, Mathematics and Science, Department of Civil Engineering, University of Wisconsin Platteville, 1 University Plaza, Platteville,WI,53818, United States

[3] Tongji Architectural Design (Group) Co. Ltd., Shanghai,20092, China

来源：

Advances in Materials Science and Engineering | 2020年 / 2020卷

关键词：

Curing - Bond strength (materials) - Shrinkage - Compressive strength;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

High-strength concrete (HSC) is widely used in engineering due to its high strength and durability. However, because of its low water-to-cement ratio, external curing water hardly enters the dense internal structure of HSC so that high self-desiccation shrinkage often takes place. As a result, superabsorbent polymers (SAP) are added as an internal curing material to effectively reduce the shrinkage of high-performance concrete. Meanwhile, the bond performance between reinforcing steel and SAP HSC concrete remains unknown. In this paper, the bond performance of HSC mixed with SAP is studied by pull-out tests, and the results were obtained as follows: (1) the bond strength of HSC mixed with SAP increased first and then decreased with the increase of SAP content; (2) the slip at ultimate bond strength of HSC with SAP decreased with the increase of compressive strength; (3) a prediction model of the stress-slip relationship between steel rebars and HSC was established. © 2020 Xiao Lei et al.

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