Experimental evaluation of clay brick masonry compressive strength by using cylindrical cores

In this study, the possible use of small (100 mm) diameter cores for the determination of clay brick masonry compressive strength was investigated. The compressive strength of a masonry arch-bridge was assessed by testing cylindrical cores, by making use of two high-strength mortar castings above and beneath the core in order to load it in the same direction as in the actual wall. The compressive strength value obtained by testing the cores was then compared with values obtained by testing small masonry portions and brick and mortar samples, separately. The results found by the three different methods show very good agreement, hence the use of small diameter cores appears as a promising moderately destructive method for assessing masonry compressive strength.