New Technique Used for Strengthening Jack Arch Slab

Abstract

Abstract The use of fiber-reinforced polymer rope (FRPR) increases the seismic performance of clay-brick unreinforced masonry slabs and increases the flexural strength of jack arch slabs or roofs. This study examines the bond strength between the clay brick units that make up the jack arch slab and strengthens it using fiber-reinforced polymer rope (FRPR) utilizing a load deflection test. Various parameters were studied, clay brick types affected, span length, camber high and number of injection point (i.e. number of FRPR strengthening are used for each span). The results show the bond strength for jack arch specimens at mid-span for two solid and perforated clay brick slabs gives the most flexural failure. In addition, the increase in the performance of jack arch slabs under line loading (i.e. it is higher deflection) with camber and number of injection.