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Research Article Open access CC BY 3.0

Repair of Pre-Cracked RC Beams Using Several Cementitious Materials

Samir M. Shihada, Yasser M. Oida

Journal of Scientific Research and Reports · pp. 655–664 · Published 27 Aug 2013

10.9734/JSRR/2013/5238

Abstract

This study investigates the use of four cementitious repair materials in terms of restoring the flexural capacities of pre-cracked reinforced concrete shallow beams. Fifteen reinforced concrete beams are cast, pre-cracked, repaired and then tested under four point-loading. The repair materials used include Ultra High Performance Concrete (UHPC), Ultra High Performance Fiber Reinforced Concrete (UHPFRC), Normal Strength Concrete (NSC) and Cement-based Repair Material (CRM). Added to this, three beams are cast, tested and considered as control beams. The outcome of this study shows that the four repair materials can achieve flexural capacities ranging from 97 % to 111% of the control beam capacities. In addition, mid-span deflections and crack patterns are also compared.

Pre-cracked shallow beams UHPFRC UHPC flexural capacity stiffness

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