Fracture toughness of compacted cohesive soils using ring test

Journal Article · Sun May 01 04:00:00 EDT 1994 · Journal of Geotechnical Engineering; (United States)

OSTI ID:7113342

Harison, J A; Hardin, B O; Mahboub, K ^[1]

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1. Univ. of Kentucky, Lexington, KY (United States)

Testing procedures and methods of analysis for determining the fracture toughness of soils using the ring test are described and values are presented. The critical mode I stress-intensity factor, the critical J integral, and the tensile strength can be determined simultaneously from a single ring-test specimen. The critical J integral was approximately equal to the energy-release rate computed from the critical mode I stress-intensity factor measured for the same specimen. A strong correlation between fracture toughness and ring-specimen tensile strength was found. Effects of material type, water content, soil-placement conditions, rate of loading, and specimen size have been studied, and values of fracture toughness measured by bending tests are compared to ring-test results. Test results show that fracture toughness of cohesive soils is affected significantly by material type and water content at time of fracture. In contrast, effects of material-placement conditions, molding water content, and molding compactive effort are relatively unimportant.

• OSTI ID: 7113342
• Journal Information: Journal of Geotechnical Engineering; (United States), Journal Name: Journal of Geotechnical Engineering; (United States) Vol. 120:5; ISSN 0733-9410; ISSN JGENDZ
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540210* -- Environment
Terrestrial-- Basic Studies-- (1990-)
58 GEOSCIENCES
580000 -- Geosciences
CLAYS
COMPACTING
CRACK PROPAGATION
EMBANKMENTS
FRACTURE MECHANICS
FRACTURE PROPERTIES
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
MANAGEMENT
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MECHANICS
SANITARY LANDFILLS
SOIL MECHANICS
SOIL-STRUCTURE INTERACTIONS
SOILS
STABILITY
STRESS INTENSITY FACTORS
TESTING
WASTE DISPOSAL
WASTE MANAGEMENT