An experimental investigation of retro-reinforced clay brick arches

Garrity, SW, Ashour, AF and Chen, Y (2010) An experimental investigation of retro-reinforced clay brick arches. International Masonry Society Proceedings, 1 (11). 733 - 742 (10). ISSN 0950-9615

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Abstract

This paper describes the laboratory testing of eight 2.95m span segmental profile clay brick arches. Seven of the arches were strengthened with longitudinal intrados (soffit) reinforcement; the eighth was left unreinforced as an experimental control. Three of the arches also contained reinforcement to resist inter-ring shear. The barrel of each arch consisted of 3 rings of brickwork laid in stretcher bond; the compressive strength of the mortar used in the arch construction varied from 1.7 to 6.2 MPa. In each case a full width line load was applied incrementally to the arch extrados at quarter span until collapse occurred. Surface crack development and the vertical deflection profile of each arch were recorded at each load increment. In all cases, the longitudinal reinforcement was found to delay the onset of cracking and to increase the load carrying capacity. As expected, premature failure by ring separation was found to occur in the arches constructed with the weakest mortar without inter-ring reinforcement. Radial dowels were found to be the most effective means of preventing ring separation. The effect of the longitudinal reinforcement was found to be greatest in the arches where measures were taken to prevent ring separation.

Item Type:	Article
Copyright, Publisher and Additional Information:	Made available with permission from the publisher.
Keywords:	arches, bridges, reinforcement, repair, strengthening, testing
Academic Units:	The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds)
Depositing User:	Symplectic Publications
Date Deposited:	01 Mar 2011 11:54
Last Modified:	08 Feb 2013 17:31
Published Version:	http://www.masonry.org.uk/
Status:	Published
Publisher:	International Masonry Society
Related URLs:	Author
URI:	http://eprints.whiterose.ac.uk/id/eprint/42879

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