高温后预损伤混凝土的轴压试验研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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高温后预损伤混凝土的轴压试验研究

Experimental study on axial compression of pre-damage concrete after high temperature

2024年第4期

预损伤；高温；质量损失率；轴压力学性能

Pre-damage; High temperature; Mass loss rate; Axial compression mechanical property

2024年第4期

10.19761/j.1000-4637.2024.04.026.05

王连坤，梁锡东*，郭一彬，刘杰，林文皓

五邑大学土木建筑学院，广东江门 529020

王连坤，梁锡东*，郭一彬，刘杰，林文皓

王连坤,梁锡东,郭一彬,等.高温后预损伤混凝土的轴压试验研究[J].混凝土与水泥制品,2024(4):26-30.

WANG L K,LIANG X D,GUO Yibin,et al.Experimental study on axial compression of pre-damage concrete after high temperature[J].China Concrete and Cement Products,2024(4):26-30.

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摘要：对不同预损伤程度下C30混凝土试件进行了高温（200、350、500 ℃）后轴心抗压试验，获取了试件的应力-应变全曲线，分析了高温对预损伤试件的质量损失率、峰值应力、峰值应变、弹性模量等的影响。结果表明：在相同温度下，预损伤程度越高的混凝土试件破坏越早；在相同预损伤程度下，高温温度越高，试件破坏越早；与温度相比，预损伤程度对试件轴压破坏的影响更大；各试件的质量损失率随着温度的升高而增加；预损伤程度越高，高温温度越高，试件的轴心抗压强度越低；随着温度的升高，各试件的峰值应力降低，峰值应变增加，上升段的斜率变小；各试件的弹性模量均随着温度的升高而降低。 Abstract: Axial compression tests were conducted on C30 concrete specimens with different degrees of pre-damage at high temperatures(200, 350, 500 ℃) to obtain the stress-strain curves of the specimens. The influence of high temperatures on the mass loss rate, peak stress, peak strain, elastic modulus, etc. of pre-damage specimens was analyzed. The results show that at the same temperature, the higher the degree of pre-damage, the earlier the concrete specimen fails. Under the same degree of pre-damage, the higher the high temperature, the earlier the specimen fails. Compared with temperature, the degree of pre-damage has a greater impact on the axial compression failure of the specimens. The mass loss rate of each specimen increases with the increase of temperature. The higher the degree of pre-damage and the higher the high temperature, the lower the axial compressive strength of the specimens. As the temperature increases, the peak stress of each specimen decreases, the peak strain increases, and the slope of the rising section of each curve decreases. The elastic modulus of each specimen decreases with the increase of temperature.

英文名 : Experimental study on axial compression of pre-damage concrete after high temperature

刊期 : 2024年第4期

关键词 : 预损伤；高温；质量损失率；轴压力学性能

Key words : Pre-damage; High temperature; Mass loss rate; Axial compression mechanical property

刊期 : 2024年第4期

DOI : 10.19761/j.1000-4637.2024.04.026.05

文章编号 :

基金项目 :

作者 : 王连坤，梁锡东*，郭一彬，刘杰，林文皓

单位 : 五邑大学土木建筑学院，广东江门 529020

王连坤，梁锡东*，郭一彬，刘杰，林文皓

王连坤,梁锡东,郭一彬,等.高温后预损伤混凝土的轴压试验研究[J].混凝土与水泥制品,2024(4):26-30.

WANG L K,LIANG X D,GUO Yibin,et al.Experimental study on axial compression of pre-damage concrete after high temperature[J].China Concrete and Cement Products,2024(4):26-30.

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摘要

参数

结论

参考文献

引用本文

Abstract: Axial compression tests were conducted on C30 concrete specimens with different degrees of pre-damage at high temperatures(200, 350, 500 ℃) to obtain the stress-strain curves of the specimens. The influence of high temperatures on the mass loss rate, peak stress, peak strain, elastic modulus, etc. of pre-damage specimens was analyzed. The results show that at the same temperature, the higher the degree of pre-damage, the earlier the concrete specimen fails. Under the same degree of pre-damage, the higher the high temperature, the earlier the specimen fails. Compared with temperature, the degree of pre-damage has a greater impact on the axial compression failure of the specimens. The mass loss rate of each specimen increases with the increase of temperature. The higher the degree of pre-damage and the higher the high temperature, the lower the axial compressive strength of the specimens. As the temperature increases, the peak stress of each specimen decreases, the peak strain increases, and the slope of the rising section of each curve decreases. The elastic modulus of each specimen decreases with the increase of temperature.

关键词:

the

试件

温度

损伤

pre-damage

temperature

specimen

程度

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