Accession Number:

ADA171479

Title:

Axisymmetric Strain-Path and Stress-Path Tests on CARES-Dry Clayey Sand

Descriptive Note:

Final rept.

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB

Personal Author(s):

Report Date:

1986-09-01

Pagination or Media Count:

170.0

Abstract:

This report documents results of laboratory tests in which the responses of remolded and undisturbed specimens of CARES-Dry clayey sand were measured under controlled strain-path and stress-path loadings. The strain-path investigation measured the response of the CARES material when subjected to 1 two strain-path shapes designated SP2 and SP3 with three levels of peak strain designated A, B, and C, 2 two strain-path shapes, 3 reverse strain-path tests, 4 one strain path SP3B conducted at several different strain rates, and 5 one strain path SP3B conducted at four different levels of initial prestress. Stress-path tests were conducted to attempt to characterize the hardening response of the CARES material under several load-unload-reload cycles with each cycle extending into the compression and extension regime of stress space. Test results proved that, in all ot he strain-path tests conducted on remolded specimens, a unique stresspath was produced by following a given strain path at a single strain rate. However, because of the inherent nonhomogeneity of the undisturbed specimens, significant variability was observed in the test data. Specimens and th followed the SP3 strain path reached a point of continuing strain with little change in principal stress difference or mean normal stress during this time the stress paths were in the proximity of the failure envelope.

Subject Categories:

  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE