Thermo-mechanical response of UHPFRC at early age -: Experimental study and numerical simulation

被引：68

作者：

Kamen, Aicha ^{[1
]}

Denarie, Emmanuel ^{[1
]}

Sadouki, Hamid ^{[1
]}

Bruehwiler, Eugen ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Maintenance & Safety Struct MCS, CH-1015 Lausanne, Switzerland

来源：

CEMENT AND CONCRETE RESEARCH | 2008年 / 38卷 / 06期

关键词：

high performance concrete; temperature effect; shrinkage; early age;

D O I：

10.1016/j.cemconres.2008.01.009

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The thermal effects on the Ultra High Performance Fiber Reinforced Concrete (UHPFRC) behavior are still not completely known. Under high temperatures, the processes that interact at early age are thermo-activated. All the experimental results obtained within this research confirmed it. Besides, certain authors observed a non-monotonous effect of temperature on the autogenous shrinkage and the creep of normal and high performance concretes. To clarify the thermal effect on the early age UBPFRC behavior an extensive experimental study was carried out. Tests results showed a non-monotonous effect of temperature on the autogenous shrinkage. In addition, finite element numerical simulations were performed to predict the experimental results and to validate existing models for different curing conditions. These models are necessary to predict accurately the deformations, the stresses and the damage (cracking) in the case of structural elements subjected to in-situ temperature variations. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：822 / 831

页数：10

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