Assessment of the potential of superabsorbent polymers as internal curing agents in concrete by means of optical fiber sensors

被引：32

作者：

Tenorio Filho, Jose Roberto ^{[1
,2
]}

Mannekens, Els ^{[3
]}

Van Tittelboom, Kim ^{[1
]}

Snoeck, Didier ^{[1
]}

De Belie, Nele ^{[1
]}

机构：

[1] Univ Ghent, Fac Engn & Architecture, Magnel Lab Concrete Res, Dept Struct Engn & Bldg Mat, Tech Lane Ghent Sci Pk,Campus Ardoyen, B-9052 Ghent, Belgium

[2] SIM Vzw, Technol Pk Zwijnaarde 48, B-9052 Ghent, Belgium

[3] Chemstream Bvba, Drie Eikenstr 661, B-2650 Edegem, Belgium

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 238卷

关键词：

Autogenous shrinkage; Superabsorbent polymers; Hydrogels; Optical fiber sensors; Concrete monitoring; HIGH-PERFORMANCE CONCRETE; AUTOGENOUS SHRINKAGE; CEMENT; DEFORMATION; BRIDGE; WATER;

D O I：

10.1016/j.conbuildmat.2019.117751

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Superabsorbent polymers (SAPs) have been widely explored in concrete technology for their promising application as internal curing agents. SAPs reduce shrinkage deformation and the risk of early-age cracking. In this paper, the efficiency of SAPs is assessed with mechanical strain gauges and long-gauge optical fiber sensors embedded inside the matrix. Two commercial and two in-house developed SAPs are used. The commercial SAPs and one of the in-house developed SAPs completely mitigated the autogenous shrinkage of concrete and all four reduced in 30% the total shrinkage. The optical fiber sensors performed better than the mechanical strain gauges and identified crack formation. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：8

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