Scienceline Publications Journal of Civil Engineering and Urbanism 2252-0430 8 2 2018 March Reduction of Damage of Buried Ammunition Depots in the Ground by Crumb Rubber Cement against Explosion Force 17 24 ojceu.com/main/attachments/article/63/J.%20Civil%20Eng.%20Urban.%208%20(2)%2017-24,%202018.pdf EN Mehdi Mirzaee Faculty of Engineering, Tarbiat Modares University, Tehran, Iran Mostafa Vaezi Department of Maritime Engineering, Amir Kabir University, Tehran, Iran Saeid Mamandi Faculty of Engineering, Islamic Azad University, Mahabad Branch, Iran Omid Abdolrahman Faculty of Engineering, Islamic Azad University, Mahabad Branch, Iran Nowadays, due to the development of missiles with high power of destruction and accuracy as well as the increase in terrorist attacks, it is better to keep military equipment in the depth of the ground. Using the underground structures (US) has been interested in shelters and ammunition depots for many years. But these structures should also be resistant to surface explosions. For this purpose, the structure must be constructed at high depths or the structure protected by the specific coating. The aim of this study was introduced and evaluates the performance of a combined coating containing crumb rubber cement (CRC) to prevent the transmission of compression waves. Hence, to check the effectiveness of this coating by modeling a buried structure in ANSYS LSDYNA at a depth of 5 meters from the ground surface and placing crumb rubber cement CRC at a depth of 2 meters from the ground surface and above the structure, the model was subjected to an explosion equivalent to 100 kilograms of TNT was analyzed for 25 milliseconds. The results showed that by inserting crumb rubber cement CRC, because of high elasticity with large deformations of crumb rubber (CR), adding it into concrete can absorb energy and reduce its transfer to the Layers down, and therefore lead to a reduction in the amount of failure and pressure which applies to the structure. To investigating the effect of the thickness of the CR layer, the pressure, and failure rate of the structure was analyzed for 0.1, 0.2, 0.3, 0.4, 0.5 m thickness layers. The results indicated that by increasing the thickness of the CR from 0.1 m to 0.5 m, the pressure and failure rate is reduced. But the intensity of this decrease of 0.4 meters later is very low so that it can be ignored. It is concluded that, CR with a thickness of 0.4m with concrete cover can be considered as a recommended optimal design and an applicable strategy in the construction of buried structures on the ground against the explosion forces. Ammunition depots Crumb rubber Concrete cover Explosion TNT