SGER: Cost Effective Retrofit for Blast Mitigation

University Of New Mexico, Albuquerque NM

Investigators

Abstract

Abstract The proposed research will investigate the feasibility of using Wire Mesh Reinforced Inorganic Matrix (WMRIM) as blast-resistant retrofits for unreinforced masonry walls. The proposed work is part of full-scale blast tests based on Glass Fiber Reinforced Polymer (GFRP) retrofits. Through full-scale blast testing, we will experimentally validate a methodology for designing WMRIM retrofits as a cost- effective solution to blast resistant retrofits. The results of this research will enable retrofit techniques to be designed based on simple static tests on structural components rather than more expensive blast tests on full-scale structures. The hypothesis of the research is that the initial blast wave causes significant damage to masonry walls. This phenomenon and the subsequent stiffening of the wall due to arch action need to be characterized to adequately model blast effect on structures. The key elements of this research are: i) Wire-mesh Reinforced Inorganic Matrix (WMRIM ii) Static Flexure Tests and iii) Blast Pressure Response Model Broader Impact Approximately 40% of the budget will leverage planned full-scale blast tests by EMRTC to obtain test data for our WMRP retrofits. Over 70% of the remaining budget for this research will directly support graduate student training. The University of New Mexico is a minority institution (Hispanic and American Indian). The PI has always had a significant ( 40%) number of minority graduate students in his research program. The full-scale explosive test facilities are located in Socorro, 1 hour drive from the University of New Mexico campus. This synergy couldallow the university to build a strong reputation in the design and testing of hardened (blast-resistant) structures and provide needed information for blast resistant design.