Effects of Temperature and Strain-Rate on the Compressive Strength of Concrete

被引：2
|
作者：
Liu, Chuanxiong [1 ]
Li, Yulong [1 ]
机构：
[1] NW Polytech Univ, Sch Aeronaut, Xian 710072, Peoples R China
来源：
ADVANCES IN BUILDING MATERIALS, PTS 1-3 | 2011年 / 168-170卷
关键词：
Temperature; Concrete; Compressive strength; SHPB; Strain-rate; Peak strain; HIGH-PERFORMANCE CONCRETE; ELEVATED-TEMPERATURES; MECHANICAL-PROPERTIES; BEHAVIOR; PERMEABILITY; MOISTURE; MODEL; FIRE; SLAG;
D O I：
10.4028/www.scientific.net/AMR.168-170.2619
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Dynamic compressive tests were carried out for concrete specimens after exposure to temperatures 23 degrees C, 400 degrees C, 600 degrees C and 800 degrees C by using Split Hopkinson Pressure Bar(SHPB) apparatus. Cylindrical specimens with 98mm in diameter and 49mm in length were used in tests. The strain rates achieved in tests ranged from 30s(-1) to 220s(-1). The results showed that the compressive strength increases with increasing strain-rate, but decreases with the increase of temperature. However, the effect of strain-rate on improving the compressive strength of concrete decreases with the increase of temperature. Moreover, the strain-rate has an improvement on the peak strain of concrete, and the accretion rate increases with increasing temperature.
引用
收藏
页码：2619 / 2624
页数：6
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