Experimental Study on Explosion Performance of Masonry Infilled Wall Reinforced by BFRP-FRCM

Once masonry infill walls were destroyed by explosion loadings, explosion-induced splashed fragments will cause injuries and equipment damage. This study proposed to apply the basalt fiber mesh-fiber reinforced cement matrix（BFRP-FRCM） composite layer to improve the explosion performance of masonry infilled walls. Then the reinforcement effect of BFRP-FRCM enhancing the masonry infilled walls under explosion loadings was experimentally studied. The enhancing mechanism was explored by analyzing the proportional distances and reinforced schemes that influence the failure mode, fragment distribution, displacement response and reflected overpressure. The results showed that BFRP-FRCM reinforcement can effectively reduce the explosion-induced damage of the masonry walls. Blasting surface reinforcement could reduce the range of the mortar joint shedding, the number of explosive fragments and the distance of fragments from the masonry wall, however, the residual displacement of the masonry wall was still large. Rein