Accession Number : AD0634691

Title :   MATERIALS FOR USE IN MITIGATING BLAST LOADS ON DEEPLY BURIED PROTECTIVE STRUCTURES,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Hoff, George C.

Report Date : JUN 1966

Pagination or Media Count : 15

Abstract : The behavior of a buried structure subjected to blast loading must be evaluated on the basis of the loads reaching the structure. Research has shown that the use of a properly designed backpacking material placed around the structure dissipates a portion of the shock energy present in the free field, thereby reducing the magnitude of the forces reaching the structure. The response of the backpacking then and that of the structure are completely interdependent, and the design of one cannot be considered without the design of the other. Based on the results of laboratory research, three materials--(a) a naturally occurring friable aggregate, (b) a foamed plastic, and (c) an insulating concrete--are currently being utilized in a prototype experiment to evaluate their shock-dissipating and stress-transfer characteristics. The results of this experiment along with other factors such as cost, availability, and ease of placement will enlighten the future outlook for backpacking materials placed around buried structures. (Author)

Descriptors :   (*UNDERGROUND STRUCTURES, *MATERIALS), (*BLAST, UNDERGROUND STRUCTURES), CONCRETE, EXPANDED PLASTICS, HONEYCOMB CORES, GLASS, LOADS(FORCES), SHOCK(MECHANICS), NUCLEAR EXPLOSION DAMAGE, CONSTRUCTION

Subject Categories : Construction Equipment, Materials & Supplies
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE