Creep Effect on Time to Corrosion-Induced Cracking of Concrete Cover

被引：1

作者：

Baji, Hassan ^{[1
]}

Yang, Wei ^{[2
]}

Li, Chun-Qing ^{[3
]}

机构：

[1] Cent Queensland Univ, Sch Engn & Technol, Cairns, Australia

[2] Univ Melbourne, Fac Architecture Bldg & Planning, Melbourne, Australia

[3] RMIT Univ, Sch Engn, Melbourne, Australia

来源：

INTERNATIONAL JOURNAL OF CIVIL ENGINEERING | 2024年 / 22卷 / 09期

基金：

中国国家自然科学基金; 澳大利亚研究理事会;

关键词：

Concrete; Creep; Relaxation; Corrosion; Time to cover cracking; NONUNIFORM CORROSION; REINFORCEMENT CORROSION; STEEL CORROSION; MODEL; REBAR; PREDICTION;

D O I：

10.1007/s40999-024-00976-z

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents an innovative method to include creep deformations in the prediction of time to corrosion-induced cover cracking. Using experimental results, creep and cracking criteria used in this method are verified. It is argued in the paper that the cover cracking problem under corrosion is close to a relaxation problem and the conventional creep formulations based on the effective elastic modulus cannot be adopted. It is found in the paper that accurate consideration of creep deformation would lead to about 30-40% longer time to cover cracking when compared to no consideration of creep deformations whilst for the currently practiced methods, the time can be up to 200% longer, which is unconservative in predicting time to cover cracking. Results in this paper open the debate on modelling of creep in the analysis of corrosion-affected structures and serve as an important step towards the accurate prediction of corrosion-induced concrete cracking.

引用

页码：1587 / 1603

页数：17

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