A novel shelly cellular material made of PVC lining and foamed ceramics shell was developed in this paper.Large scaled explosion tests were performed to study the damage condition and energy absorption performances of civil defense engineering using sand or the novel shelly cellular material as the attenuation layer.The test results show that the energy dissipation capacity of the shelly cellular material is better than that of sand,and the maximum stress in the test using novel material as the attenuation ...