Reinforcement-concrete bond behavior: Experimentation in drying conditions and meso-scale modeling

被引：38
|
作者：
Michou, A. [1 ,2 ]
Hilaire, A. [1 ]
Benboudjema, F. [1 ]
Nahas, G. [1 ,3 ]
Wyniecki, P. [4 ]
Berthaud, Y. [5 ]
机构：
[1] Univ Paris Saclay, CNRS, ENS Cachan, LMT Cachan, Cachan, France
[2] Univ Paris 06, Sorbonne Univ, Paris, France
[3] Inst Radioprotect & Surete Nucl, Fontenay Aux Roses, France
[4] Nuvia Struct, Aix En Provence, France
[5] Univ Paris 06, CNRS, Sorbonne Univ, Inst Jean Rond Alembert, Paris, France
来源：
ENGINEERING STRUCTURES | 2015年 / 101卷
关键词：
Reinforcement-concrete bond; Cracking; Digital Image Correlation; Optic sensors; Drying shrinkage; CRACK; SHRINKAGE; DAMAGE; PERMEABILITY; CORROSION; CREEP; BARS; SIZE;
D O I：
10.1016/j.engstruct.2015.07.028
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Reinforced concrete structures must fulfill serviceability functions in terms of durability and bearing capacities. Steel-concrete interface plays a crucial role in the cracking behavior (crack openings, spacing). Hence, its accurate description should be considered in a relevant way. In this paper, a meso-scale reinforcement-concrete bond model is proposed, based on an explicit mesh of the interface area. This area implicitly considers the presence of steel ribs and the progressive steel-concrete slip through two coupled plastic criteria. The model is calibrated on pull-out tests, validated on long reinforced concrete ties in tension and compared with experimental tests carried out for this study. In this experiment, local strain in reinforcement and surface cracking mapping have been measured. Special attention is also devoted to the effect of drying shrinkage and creep on the structural and cracking behavior. Their effects are significant, but greatly depend on the reinforcement ratio. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：570 / 582
页数：13
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