Experimental study on residual strength and nondestructive testing of high strength concrete after high temperature

被引：0

作者：

Zhao, Dongfu ^{[1
]}

Liu, Mei ^{[1
]}

机构：

[1] Engineering Structure and New Materials of Beijing University Engineering Research Center, Beijing University of Civil Engineering and Architecture, Beijing,100044, China

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2015年 / 36卷

关键词：

Scanning electron microscopy - X ray diffraction - Chemical analysis - Compressive strength - Heating - Nondestructive examination - High performance concrete - Microhardness - Microstructure - Concrete testing - Ultrasonic testing;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A study on the mechanical properties of C60 high strength concrete was conducted under comprehensive conditions, different heating temperature and different heating time. The research shows that: with the increase of the heating temperature and heating time, the compressive strength of concrete is generally decreased. By the comprehensive means of using the ultrasonic detector, scanning electron microscope, X ray diffraction, mercury porosimeter, and micro hardness tester, the microstructure of concrete under different temperature and different heating time was studied from different angles. The physical and chemical changes and microstructure changes of high strength concrete material in temperature process were analyzed. © 2015, Science Press. All right reserved.

引用

页码：365 / 372