• Umesh. T. Jagadale
• Akashay Salunkhe
• Chittaranjan B. Nayak3

In recent years, due to the increased terrorist attacks on various important civil structures the need of analysis, design, and protection against blast is necessary. These attacks are carried out using high explosive devices, resulting in destructive effects on survivability of structure and occupants. One of the most important examples of such incident is September 11, 2001 attack at World Trade Centre, New York, U.S., which led to change in focus of more research emphasis towards structure safety against such manmade devastating attacks. This blast-induced impulsive load needs assessment to establish and arrive at an agreeable threat level against which mitigation/protection measures need to be implemented. This study aims to investigate the effect of blast load on various materials used for external strengthening of a circular pier of concrete bridge. In this paper a circular bridge pier of 400mm with 4m is used with three different conditions. CFRP laminates are wrapped around the circular pier in first case, CNT rubber lining (composite of LaRC-SI polymer and 1% fraction of SWNT) is used in second case and in the third case conventional concrete is replaced by CNT reinforced concrete. The blast load is applying at mid-height of the pier with 100kg of TNT with varying standoff distance. The results are obtained analytically using LS DYNA software. Results indicate that all three materials are effective in reducing the lateral deflection of pier

Blast Load, Mitigation, CFRP laminates, CNT, TNT.

"Blast Load Mitigation of Concrete Bridge Circular Pier by external Strengthening using CFRP Laminates and CNT Rubber Lining ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 6, page no.b590-b593, June-2022, Available :http://www.jetir.org/papers/JETIR2206179.pdf

"Blast Load Mitigation of Concrete Bridge Circular Pier by external Strengthening using CFRP Laminates and CNT Rubber Lining ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 6, page no. ppb590-b593, June-2022, Available at : http://www.jetir.org/papers/JETIR2206179.pdf