An Application of IRT to Detect Fire Damage of Concrete Structures
The infrared thermalgraphy (IRT) can be used to detect the state and damage degree of material, and to judge the material property. Based on the principle of IRT, twenty-seven damaged concrete cubes with and without mortar cover after subjected to high temperature were tested and analyzed by infrared thermalgraphy. Based on the test results, the relation curves of average temperature rising acquired from infrared thermal images of damaged concrete cubes to the time of heating was established, and four regressive equations of the average temperature rising of infrared thermal images to the highest subjected temperature of concrete cubes and to the compressive strength reduction index of concrete cubes were proposed. From the test and analysis result, it is indicated that the mortar cover could effectively mitigate the fire damage of concrete structure and a favorable fire-resistant behavior of a RC structure rendered with mortar cover can be expected.
infrared thermalgraphy concrete mortar cover fire damage compressive strength
GUO Zixiong DU Yaofeng
College of Civil Engineering, Huaqiao University, Quanzhou 362021, Fujian, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
1201-1205
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）