Investigation on the Relationship between Highest Fire Temperature and Change of Microstructure in Concrete

Author

Zhao Dongfu ; You Zuokai ; Su Yu ; Liu Dongdong

Author_Institution

Sch. of Civil & Transp. Eng., Beijing Univ. of Civil Eng. & Archit., Beijing, China

fYear

2013

fDate

29-30 June 2013

Firstpage

736

Lastpage

739

Abstract

The blocks are made with C40 concrete and tested in the specified temperature curve. The thermocouples are used to measure the temperature field of the internal blocks. After fire test, the samples derived from different locations of the concrete block are observed in the scanning electron microscope (SEM) and analyzed by X-ray diffraction (XRD) to extrapolate maximum temperature of the samples. The temperature extrapolated by SEM and XRD is in good agreement with the temperature measured by thermocouples. This proves it is feasibility that the maximum temperature of the concrete beam, column, wall and other components after fire extrapolated by SEM and XRD, which can provide reliable data to support Post-disaster assessment work.

Keywords

X-ray diffraction; beams (structures); concrete; construction components; disasters; fires; scanning electron microscopes; thermocouples; walls; C40 concrete; SEM; X-ray diffraction; XRD; concrete beam; concrete column; concrete wall; fire test; highest fire temperature; microstructure change; post-disaster assessment work; scanning electron microscope; thermocouples; Automation; Manufacturing; Concrete; Highest fire temperature; Microstructure;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Manufacturing and Automation (ICDMA), 2013 Fourth International Conference on

Conference_Location

Qingdao

Type

conf

DOI

10.1109/ICDMA.2013.175

Filename

6598096