Influence of the mechanical properties of lime mortar on the strength of brick masonry
Citation:
Influence of the mechanical properties of lime mortar on the strength of brick masonry, Jan Valek, John J. Hughes and Caspar J.W.P. Groot, RILEM bookseries Vol. 7. Historic Mortars: Characterisation, Assessment and Repair, Springer New York, 2013, 359 - 372, A. Costigan and S. PaviaDownload Item:
RILEM book.pdf (PDF) 549.1Kb
Abstract:
This paper aims at improving the quality of lime mortar masonry by
understanding the mechanics of mortars and masonry and their interaction. It
investigates how the mortar?s compressive and flexural strengths impact the
compressive and bond strength of clay brick masonry bound with calcium lime
(CL) and natural hydraulic lime (NHL) mortars. It concludes that the strength of
the bond has a greater impact on the compressive strength of masonry than the
mortar?s strength. The masonry compressive strength increased proportionally to
the strength of the bond up to 6 months. A regression analysis, giving a second
order equation with coefficient of determination (R2) of 0.918, demonstrates a
strong and predictable relationship between bond strength and masonry
compressive strength. It was noted that CL90s mortar masonry reaching a high
bond value was stronger than that built with a stronger mortar but displaying a
poorer bond. Finally, the mechanics of lime mortars and their masonry are similar.
The predominantly elastic behaviour of the mortars of higher hydraulic strength
compares well with the elastic and brittle behaviour of their masonry, with either
little (NHL2) or non-existent plasticity (NHL3.5 and 5); in contrast, the CL90
mortar and masonry exhibit a plastic behaviour.
Author's Homepage:
http://people.tcd.ie/paviasDescription:
PUBLISHED
Author: PAVIA, SARA
Other Titles:
RILEM bookseries Vol. 7. Historic Mortars: Characterisation, Assessment and RepairPublisher:
Springer New YorkType of material:
Book ChapterAvailability:
Full text availableLicences: