Accession Number : AD0762194
Title : The effects of Stress History on the Resilient Response of Soils
Descriptive Note : Technical rept.
Corporate Author : CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
Personal Author(s) : Allen, John J
PDF Url : AD0762194
Report Date : Jun 1973
Pagination or Media Count : 223
Abstract : The project investigated the effects of non-constant lateral pressures on the resilient response of granular materials. Three materials (crushed stone, gravel, and a blend of crushed stone and gravel) at three levels of density were subjected to repeated dynamic lateral and axial stresses in a specially designed and fabricated triaxial chamber. The same specimens were also tested at constant confining pressure and repeated dynamic axial stresses. The influence on the resilient response of the materials of such factors as stress history, stress pulse duration, stress sequence, density level, and material type was investigated. Predictive equations for the resilient modulus and resilient Poisson's ratio were developed by means of nonlinear regression analyses of the laboratory data. A sensitivity analysis of typical flexible pavement sections was carried out using a non-linear finite sensitivity analysis; it was possible to ascertain the significance of the laboratory results as regards pavements response to dynamic loading.
Descriptors : *CONSTRUCTION MATERIALS, *MODULUS OF ELASTICITY, *PAVEMENTS, DENSITY, GRAVEL, LOADS(FORCES), PRESSURE, REGRESSION ANALYSIS, RESPONSE, ROCK, STRESSES, TEST EQUIPMENT
Subject Categories : Construction Equipment, Materials & Supplies
Distribution Statement : APPROVED FOR PUBLIC RELEASE