主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (8): 1146-1150.

• • 上一篇    下一篇

矿渣混凝土的耐火性能及微观特性研究

程和平1,陆 璐2   

  1. 1.常州工程职业技术学院,江苏 常州 213164;2.辽宁工程技术大学 土木工程学院,辽宁 阜新 123000
  • 出版日期:2021-08-15 发布日期:2021-03-15
  • 作者简介:程和平(1975-),辽宁鞍山人,常州工程职业技术学院副教授,主要从事土木工程材料与建筑工程结构方面的研究,江苏省常州市武进区滆湖中路33号,213164。

Study on the fire resistance and micro characteristics of slag concrete

CHENG He-ping1, LU Lu2   

  1. 1. Changzhou Vocational Institute of Engineering, Jiangsu Changzhou 213164, China; 2. School of Civil Engineering, Liaoning Technical University, Liaoning Fuxin 123000, China
  • Online:2021-08-15 Published:2021-03-15

摘要:

为研究高温条件下矿渣混凝土的力学、热物理性质以及微观特性,实验测定不同温度条件下某型矿渣混凝土的抗压强度、质量损失率,并进行DSC热分析和红外光谱分析。结果表明:随着温度不断升高,矿渣混凝土热量的变化规律呈现出先减小、再增大、后减小的趋势;当温度小于500 ℃时,矿渣混凝土FTIR曲线的变化规律基本一致,但是当温度大于500 ℃时,矿渣混凝土的FTIR曲线在波数为750~620 cm-1内呈明显的变化。

关键词: 抗压强度, 质量损失率, DSC热分析, 红外光谱, 自然冷却, 矿渣

Abstract: In order to study the mechanical, thermophysical properties and micro characteristics of slag concrete under high temperature conditions, the compressive strength, mass loss rate, DSC thermal analysis and infrared spectroscopy of slag concrete under different temperature conditions are measured or made. The results show that as the temperature continues to rise, the heat change law of slag concrete shows a trend of first decreasing, then increasing, and then decreasing. When the temperature is less than 500 ℃, the FTIR curve of slag concrete changes basically the same. But when the temperature is higher than 500 ℃, the FTIR curve of slag concrete shows obvious changes within the wave number of 750~620 cm-1

Key words:  , compressive strength, mass loss rate, DSC thermal analysis, infrared spectroscopy, natural cooling, slag