Influence of rendering (plastering) on the flexural bond strength of brick masonry


Different national codes of practice prescribe permissible stresses for the design of laterally loaded masonry.  For vertically spanning walls, the flexural strength of masonry parallel to the bed joints has conventionally been attributed to depend on the bond strength between the bedding mortar and the brick as only unrendered specimens have been used in research.  However, in most applications, brick masonry is rendered for functional and aesthetic reasons.  A systematic study was carried out on the flexural  strength normal to the bed joints of brick masonry with different cement-limes of brick and mortar strengths, with and without rendering to determine the effect of rendering.   The potential enhancements in flexural strength are presented along with a discussion on the overall behaviour.   A comparison with code provisions was also made to emphasise  the need to recognise this aspect.  11 refs.

Primary author(s): Ramamurthy K; Radhakrishnan R

                            Indian Institute of Technology; Palghat,N.S.S.College of Engineering

Source: Masonry Int.


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