Effects of Temperature and Strain Rate on Dynamic Properties of Concrete

被引：4

作者：

贾彬 ^{[1
,2
]}

陶俊林 ^{[2
]}

李正良 ^{[1
]}

王汝恒 ^{[2
]}

张誉 ^{[2
]}

机构：

[1] School of Civil Engineering ,Chongqing University

[2] School of Civil Engineering and Architecture, Southwest University of Science and Technology

来源：

Transactions of Tianjin University | 2008年 / S1期

基金：

中国国家自然科学基金;

关键词：

concrete; temperature effect; strain rate effect; SHPB;

D O I：

暂无

中图分类号：

TU528 [混凝土及混凝土制品];

学科分类号：

0805 ; 080502 ; 081304 ;

摘要：

To study the dynamic properties of the concrete subjected to impulsive loading, stress-time curves of concrete in different velocities were measured using split Hopkinson pressure bar (SHPB).Effects of temperature and strain rate on the dynamic yield strength and constitutive relation of the con-crete were analyzed. The dynamic mechanical properties of the reinforced concrete are subjected to high strain rates when it is at a relatively low temperature. But with temperature increasing, the temperature softening effect makes the strength of the concrete weaken and the impact toughness of the concrete is saliently relative to strain rate effect. So, strain rate effect, strain hardening and temperature softening work together on the dynamic mechanical capability of concrete and the relation between them is relatively complex.

引用

收藏

页码：511 / 513

页数：3

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