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Author:

Song, Tian-Yi (Song, Tian-Yi.) | Qu, Xing-Yu (Qu, Xing-Yu.) | Pan, Zhu (Pan, Zhu.) | Xiang, Kai (Xiang, Kai.) | Zhou, Hongyuan (Zhou, Hongyuan.)

Indexed by:

EI Scopus SCIE

Abstract:

This paper presents an experimental investigation on geopolymeric recycled aggregate concrete filled steel tubular (GRACFST) columns in fire. A total of 12 specimens were tested, including 6 circular columns and 6 square columns subjected to combined fire and loading. The test parameters include: (a) cross-section type (circular and square); (b) column load ratio (0.3, 0.4 and 0.6); and (c) fire scenario (all around fire exposure and two surfaces fire exposure). The failure mode, temperature development, deformation development and fire resistance of GRACFST columns were obtained and discussed. Finally, the fire resistance design method for conventional CFST columns proposed in Eurocode 4 was used to predict the ultimate cross sectional load bearing capacity of the GRACFST column at a specified fire exposure time, and the comparison between the prediction and the test results reported in this paper indicated that the Eurocode 4 method gave an overestimation to the GRACFST column. To improve the prediction accuracy, suitable material models for the passively confined GRAC in CFST columns should be developed in the future research.

Keyword:

Fire performance Geopolymeric recycled aggregate concrete Fire resistance design Fire scenario Concrete filled steel tubes

Author Community:

  • [ 1 ] [Song, Tian-Yi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Qu, Xing-Yu]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Zhou, Hongyuan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Pan, Zhu]Hebei Univ Technol, Sch Civil Engn & Transportat, Tianjin 300401, Peoples R China
  • [ 5 ] [Pan, Zhu]Hebei Univ Technol, Tianjin Key Lab Prefabricated Bldg & Smart Constr, Tianjin 300401, Peoples R China
  • [ 6 ] [Xiang, Kai]Minist Publ Secur, Tianjin Fire Res Inst, Tianjin 300381, Peoples R China

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Source :

FIRE TECHNOLOGY

ISSN: 0015-2684

Year: 2022

Issue: 5

Volume: 58

Page: 2727-2754

3 . 4

JCR@2022

3 . 4 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:66

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 9

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

Affiliated Colleges:

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