Numerical Simulation of the Blast Resistance of SPUA Retrofitted CMU Masonry Walls

Through numerical simulation, the blast-resistant performance of spray polyurea elastomer (SPUA) retrofitted concrete masonry unit (CMU) infill walls under far-range blast loading was studied. From an engineering perspective, effects boundary conditions and thickness a SPUA layer on enhancing resistance are discussed, SPUA-retrofitted grouted CMU compared. It is concluded that constraint anchorage length have limited improvement wall; can significantly improve wall as increases. In addition, retrofitting shows relatively better to reinforce walls.