A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pavement Cratering Studies
The objectives of this research effort were twofold: (1) to define the damage to airfield pavement systems caused by a wide range of C-4 charges and bombs when detonated at various depths below the pavement surface (i.e., determine the extent of damage expected from these explosives), and (2) to investigate the feasibility of scaling pavement systems and explosives in order to more economically study cratering effects on different pavement systems. The first objective was implemented by a series of tests using 5-, 15-, and 25-lb C-4 charges placed at various depths under pavement surfaces in two abandoned airfields (Fort Sumner and Hays) and three sizes of bombs at the Hays test site. Damage such as the repair volumes, true crater depths, etc., were plotted as a function of charge size and depth-of-burst. Three types of craters were found: (1) shallow depth-of-burst craters of hemispherical shape, (2) deep depth-of-burst craters with no apparent crater and little ejecta, and (3) intermediate depth-of-burst craters exhibiting some of the characteristics of both the shallow and the deep craters. The crater dimensions from Fort Sumner (sandy silt subgrade) were, in general, smaller than those from Hays (clay subgrade) for all C-4 charges. A similitude analysis was conducted using the test data from all C-4 charges (Hays) to ascertain if a scaling factor or a distortion factor could be determined.
Pavement Cratering Studies
The objectives of this research effort were twofold: (1) to define the damage to airfield pavement systems caused by a wide range of C-4 charges and bombs when detonated at various depths below the pavement surface (i.e., determine the extent of damage expected from these explosives), and (2) to investigate the feasibility of scaling pavement systems and explosives in order to more economically study cratering effects on different pavement systems. The first objective was implemented by a series of tests using 5-, 15-, and 25-lb C-4 charges placed at various depths under pavement surfaces in two abandoned airfields (Fort Sumner and Hays) and three sizes of bombs at the Hays test site. Damage such as the repair volumes, true crater depths, etc., were plotted as a function of charge size and depth-of-burst. Three types of craters were found: (1) shallow depth-of-burst craters of hemispherical shape, (2) deep depth-of-burst craters with no apparent crater and little ejecta, and (3) intermediate depth-of-burst craters exhibiting some of the characteristics of both the shallow and the deep craters. The crater dimensions from Fort Sumner (sandy silt subgrade) were, in general, smaller than those from Hays (clay subgrade) for all C-4 charges. A similitude analysis was conducted using the test data from all C-4 charges (Hays) to ascertain if a scaling factor or a distortion factor could be determined.
Pavement Cratering Studies
A. Kvammen (author) / R. Pichumani (author) / J. L. Dick (author)
1972
187 pages
Report
No indication
English
Detonations, Explosion Effects, & Ballistics , Air Transportation , Bombs , Pavements , Terminal ballistics , Model theory , Cratering , Penetration , Runways , Terminal flight facilities , Underground explosions , Explosions , Detonations , Explosion effects , Factor analysis , Measurement , Soil mechanics , Test methods , Tests , Explosive charges , Weight , Concrete , Soils , Tables(Data) , Graphics , Composition c-4 explosive , Depth of burst , Mark-82 bombs , Mark-81 bombs , M-117 bombs
| NTIS | 1971
Cratering, Mechanisms and Historical Cases
| British Library Conference Proceedings | 1994
Ball cratering test on ductile materials
| British Library Online Contents | 2011