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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationLife-Cycle Civil Engineering - Proceedings of the 1st International Symposium on Life-Cycle Civil Engineering, IALCCE '08
Pages165-170
Number of pages6
Publication statusPublished - 2008
Event1st International Symposium on Life-Cycle Civil Engineering, IALCCE'08 - Varenna, Lake Como, Italy
Duration: 2008 Jun 112008 Jun 14

Publication series

NameLife-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
CountryItaly
CityVarenna, Lake Como
Period08/6/1108/6/14

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Computational Mechanics

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    Henry, M., Ahn, T. H., Kato, Y., & Kishi, T. (2008). Development of a damage-recovery relationship based on variable re-curing of fire-damaged high-strength mortar. In Life-Cycle Civil Engineering - Proceedings of the 1st International Symposium on Life-Cycle Civil Engineering, IALCCE '08 (pp. 165-170). (Life-Cycle Civil Engineering - Proceedings of the 1st International Symposium on Life-Cycle Civil Engineering, IALCCE '08).