A review on the recovery of fire-damaged concrete with post-fire-curing

被引：0

作者：

Li, Lang ^{[1
,2
]}

Shi, Long ^{[3
]}

Wang, Qingyuan ^{[1
,2
]}

Liu, Yongjie ^{[1
,2
]}

Dong, Jiangfeng ^{[1
]}

Zhang, Hong ^{[1
,2
]}

Zhang, Guomin ^{[3
]}

机构：

[1] Sichuan Univ, Coll Architecture & Environm, Key Lab Sichuan Prov, Failure Mech & Engn Disaster Prevent & Mitigat, Chengdu 610065, Peoples R China

[2] Sichuan Univ, Key Lab Deep Underground Sci & Engn, Minist Educ, Chengdu 610065, Peoples R China

[3] RMIT Univ, Sch Engn, Civil & Infrastruct Engn Discipline, Melbourne, Vic 3001, Australia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 237卷

基金：

中国国家自然科学基金;

关键词：

Cement; Concrete; Mortar; Paste; High temperature; Recovery; Post-fire-curing; Rehydration; PORE-SIZE DISTRIBUTIONS; HIGH-STRENGTH CONCRETE; MERCURY INTRUSION POROSIMETRY; CEMENT-BASED COMPOSITE; LATTICE-RELAXATION MEASUREMENTS; RESIDUAL COMPRESSIVE STRENGTH; SATURATED POROUS SOLIDS; THERMAL INDUCED STRESS; C-S-H; HIGH-TEMPERATURE;

D O I：

10.1016/j.conbuildmat.2019.117564

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The recovery of concrete by post-fire-curing is non-negligible in assessing the residual properties of concrete after the fire or similar hazardous disasters. This paper reviewed the related studies on this subject. The post-fire-curing was introduced, the mechanism of post-fire-curing and the properties tested were reviewed. Moreover, some factors influencing the recovery were discussed. The recovery after the post-fire-curing is based on the rehydration of the dehydrates produced in the high-temperatures exposure. Moisture is essential to the recovery, so water post-fire-curing always results in better recovery. After the recovery, the pore structures can recover to the pre-fire level while the mechanical properties and durability cannot. The mechanism and the contribution of the further hydration of unhydrated cement grain are still not clear. The direct relationship between the rehydration and the strength recovery needs further investigation in future studies. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：17

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Li, Lang
Shi, Long
Wang, Qingyuan
Liu, Yongjie
Dong, Jiangfeng
Zhang, Hong
Zhang, Guomin
[J]. Construction and Building Materials, 2021, 237
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