Effect of post-fire curing on the residual mechanical properties of fire-damaged self-compacting concrete

Mahsa Mirmomeni, Amin Heidarpour, Erik Schlangen, Scott Smith

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Concrete is recognized for being a fire-resistant construction material. At elevated temperatures concrete can, however, undergo considerable damage such as strength degradation,cracking, and explosive spalling. In recent decades, reuse of fire-damaged concrete structures by means of developing techniques to repair the degraded material has gained interest amongst researchers. Autogenic self-healing methods such as re-curing in water has proven to partly restore the strength of concrete. The extent of restoration is dependent upon various parameters such as concrete type, exposure temperature, and post-fire curing conditions for example. The use of self compacting/consolidating concrete (SCC) has become common in the construction industry due to its high workability and low permeability. This paper presents the results of an experimental study aimed at investigating the improved mechanical properties of high temperature exposed SCC concrete by the autogenic self-healing phenomenon resulting from water re-curing. The residual mechanical properties including strength, modulus of elasticity and ultimate strain of the material upon application of different post-fire curing regimes are presented herein with special emphasis on the effect of thermal profile including exposure time, temperature and cooling rate. The experimental results confirm that the recovery of material properties in fire-damaged SCC concrete is contingent on the post-fire water curing conditions.
Original languageEnglish
Title of host publication9th International Conference on Fracture Mechanics of Concrete and Concrete Structures
EditorsV. Saouma, J. Bolander, E. Landis
Place of PublicationEvanston IL USA
PublisherInternational Association for Fracture Mechanics of Concrete and Concrete Structures
Number of pages8
DOIs
Publication statusPublished - 2016
EventInternational Conference on Fracture Mechanics of Concrete and Concrete Structures 2016 - University of California, Berkeley, Berkeley, United States of America
Duration: 29 May 20161 Jun 2016
Conference number: 9th
http://framcos.org/FraMCoS-9.php#gsc.tab=0

Conference

ConferenceInternational Conference on Fracture Mechanics of Concrete and Concrete Structures 2016
Abbreviated titleFraMCos - 9
CountryUnited States of America
CityBerkeley
Period29/05/161/06/16
Internet address

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