Accession Number : AD0715755

Title :   Soil Stabilization: A Durability Test for Stabilized Soils

Descriptive Note : Phase rept. no. 7

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE SOIL MECHANICS DIV

Personal Author(s) : Wissa, Anwar E ; Paniagua, Jose G

PDF Url : AD0715755

Report Date : Jun 1969

Pagination or Media Count : 166

Abstract : The report describes and evaluates a new testing procedure for determining the surface durability of stabilized soils by measuring the change in tensile strength at the surface of test specimens (slabs) subjected to laboratory cycles of weathering. This test, called the Durability Tensile Test, is shown to be potentially a more direct and reproducible method than the standard ASTM Durability Test for evaluating stabilized soils. A prototype apparatus has been constructed to measure the surface tensile strength over approximately 4.0 sq cm circular areas of a 5-inch-square slab, one inch thick. Preliminary tests on three slabs show that the measured strength is related to the effective cohesion of the soil system. For example, increases in curing or dry density which result in an increase in effective cohesion also produce an increase in measured tensile strength. Weathering cycles which have been shown elsewhere to cause a loss in effective cohesion, also result in a loss in tensile strength. Therefore the Durability Tensile Test appears to be a rational method of evaluating durability characteristics. Based on the experience obtained with the prototype apparatus, a modified version is recommended to improve reproducibility and to simplify the testing procedure.

Descriptors :   *SOILS, AGING(MATERIALS), COMPRESSIVE PROPERTIES, STABILIZATION, SURFACE PROPERTIES, TENSILE PROPERTIES, TEST EQUIPMENT, TEST METHODS, WEAR RESISTANCE

Subject Categories : Soil Mechanics
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE