Experimental investigation of the strength of fire-damaged concrete depending on admixture contents

Yeonju Chun, Jaesun Kwon, Jeongwoo Kim, Heeju Son, Soyoung Heo, Suyeon Cho, Heesun Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This study investigates whether the inclusion of fly ash and blast furnace slag in concrete mixtures affects the compressive strength of concrete exposed to high temperatures. When the specimens were exposed to 200 °C, fly ash composite concrete shows the highest strength and C-S-H peak in Raman spectroscopy is observed for all three specimens. When the specimens were exposed to 500 °C, pure cement concrete shows the highest strength and C-S-H peak is selectively captured while when the specimens were exposed to 800 °C, fly ash-slag composite concrete shows the highest strength and C-S-H peak is not found.

Original languageEnglish
Article number131143
JournalConstruction and Building Materials
Volume378
DOIs
StatePublished - 16 May 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Ltd

Keywords

  • Concrete
  • Fire
  • Fly ash
  • Furnace slag
  • High temperature

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