Detection of Thermophysical Properties for High Strength Concrete after Exposure to High Temperature

Using the detection principle of infrared thermal imaging technique and the detection principle of DRH thermal conductivity tester laboratory,we investigated the infrared thermal image inspection,coefficient of thermal conductivity,apparent density,and compressive strength test on C80 high-strength...

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Bibliographic Details
Published inJournal of Wuhan University of Technology. Materials science edition Vol. 32; no. 1; pp. 113 - 120
Main Author 杜红秀 WU Jia LIU Gaili WU Huiping YAN Ruizhen
Format Journal Article
LanguageEnglish
Published Wuhan Wuhan University of Technology 01.02.2017
Springer Nature B.V
Subjects
Bulk density
Cementitious Materials
Chemistry and Materials Science
Coefficients
Fibers
Heat transfer
High strength concretes
Infrared imagery
Materials Science
Polypropylenes
Thermal conductivity
polypropylene fiber
compressive strength ratio
high-strength concrete
infrared thermal imaging technique
coefficient of thermal conductivity
high temperature
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ISSN1000-2413
1993-0437
DOI10.1007/s11595-017-1568-z

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Summary:Using the detection principle of infrared thermal imaging technique and the detection principle of DRH thermal conductivity tester laboratory,we investigated the infrared thermal image inspection,coefficient of thermal conductivity,apparent density,and compressive strength test on C80 high-strength concrete（HSC） in the presence and absence of polypropylene fibers under completely heated conditions.Only slight damages were detected below 400 ℃,whereas more and more severe deterioration events were expected when the temperature was above 500 ℃.The results show that the elevated temperature through infrared images generally exhibits an upward trend with increasing temperature,while the coefficient of thermal conductivity and apparent density decrease gradually.Additionally,the addition of polypropylene fibers with appropriate length,diameter,and quantity contributes to the improvement of the high-temperature resistance of HSC.
Bibliography:42-1680/TB
high-strength concrete; polypropylene fiber; high temperature; infrared thermal imaging technique; coefficient of thermal conductivity; compressive strength ratio
Using the detection principle of infrared thermal imaging technique and the detection principle of DRH thermal conductivity tester laboratory,we investigated the infrared thermal image inspection,coefficient of thermal conductivity,apparent density,and compressive strength test on C80 high-strength concrete（HSC） in the presence and absence of polypropylene fibers under completely heated conditions.Only slight damages were detected below 400 ℃,whereas more and more severe deterioration events were expected when the temperature was above 500 ℃.The results show that the elevated temperature through infrared images generally exhibits an upward trend with increasing temperature,while the coefficient of thermal conductivity and apparent density decrease gradually.Additionally,the addition of polypropylene fibers with appropriate length,diameter,and quantity contributes to the improvement of the high-temperature resistance of HSC.
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ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-017-1568-z