Accession Number : AD0742050

Title :   Dynamic Properties of Granodiorite Project Pile Driver,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Stowe,R. L.

Report Date : OCT 1966

Pagination or Media Count : 12

Abstract : Granodiorite from the PILE DRIVER experiment was tested for dynamic unconfined compressive strength using a rapid-loading technique. The specimens were loaded to failure using a drop tower, a loading rate of 10,000,000 psi per second, and rise times of from 2.5 to 3.5 milliseconds. Several other specimens were loaded to failure statically at a loading rate of 3000 psi per minute. The granodiorite had an unconfined compressive strength approximately 27 percent greater, a modulus of elasticity approximately 28 percent greater, and a Poisson's ratio approximately 50 percent less when dynamically loaded than when statically loaded. (Author)

Descriptors :   (*ROCK, COMPRESSIVE PROPERTIES), LOADS(FORCES), QUARTZ, SILICATES, ALUMINUM, FAILURE(MECHANICS), DROP TESTS, FLEXURAL STRENGTH, MODULUS OF ELASTICITY

Subject Categories : Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE