矿渣混凝土的耐火性能及微观特性研究  

Study on the fire resistance and micro characteristics of slag concrete

作　　者：程和平[1] 陆璐 CHENG He-ping;LU Lu(Changzhou Vocational Institute of Engineering,Jiangsu Changzhou 213164,China;School of Civil Engineering,Lia�oning Technical University,Liaoning Fuxin 123000,China)

机构地区：[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　　处：《消防科学与技术》2021年第8期1146-1150,共5页Fire Science and Technology

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。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 tem-perature 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).

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 

分 类 号：TU421[建筑科学—岩土工程]