Development of a damage-recovery relationship based on variable re-curing of fire-damaged high-strength mortar

M. Henry, T. H. Ahn, Y. Kato, T. Kishi

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Repair utilizing re-curing has the potential to restore strength and durability without removal and casting operations, thus reducing waste generation and material consumption. In this research, the effect of different post-fire cooling and re-curing conditions on the behavior of high-strength mortar was investigated. After removal from heating, specimens were placed in air or water conditions, and unstressed compressive strength and mercury intrusion porosimetry tests, as well as an epoxy injection process to observe the cracking pattern, were performed in order to understand the relationship between damage and recovery mechanisms. Results showed that air re-curing resulted in the formation of surface cracks due to differential thermal shrinkage, reducing strength. Immediate water submersion also resulted in large strength reductions, but was followed by strength, porosity, and crack recovery due to rehydration. Specimens which were cooled in the air before water submersion underwent less strength loss but also recovered less during re-curing.

本文言語English
ホスト出版物のタイトルLife-Cycle Civil Engineering - Proceedings of the 1st International Symposium on Life-Cycle Civil Engineering, IALCCE '08
ページ165-170
ページ数6
出版ステータスPublished - 2008
外部発表はい
イベント1st International Symposium on Life-Cycle Civil Engineering, IALCCE'08 - Varenna, Lake Como, Italy
継続期間: 2008 6 112008 6 14

出版物シリーズ

名前Life-Cycle Civil Engineering - Proceedings of the 1st International Symposium on Life-Cycle Civil Engineering, IALCCE '08

Conference

Conference1st International Symposium on Life-Cycle Civil Engineering, IALCCE'08
国/地域Italy
CityVarenna, Lake Como
Period08/6/1108/6/14

ASJC Scopus subject areas

  • 土木構造工学
  • 計算力学

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