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The Effect of Water Content on Axial Strain in a Loam Soil under Tension and Compression
Author(s) -
Farrell D. A.,
Greacen E. L.,
Larson W. E.
Publication year - 1967
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1967.03615995003100040011x
Subject(s) - loam , ultimate tensile strength , materials science , compression (physics) , stress–strain curve , tension (geology) , composite material , stress (linguistics) , geotechnical engineering , strain (injury) , water content , drop (telecommunication) , modulus , soil water , tensile testing , deformation (meteorology) , geology , soil science , medicine , telecommunications , linguistics , philosophy , computer science
A method is described for measuring axial strain in a remolded loam soil under unconfined axial loading in both compression and tension. Using this method the stress‐strain relationships for the loam soil were determined for soil‐water contents ranging from 2% to 12% by weight. The maximum tensile stress in a soil beam stressed to failure in a modulus of rupture test was computed from the measured stress‐strain relationships. This computed fiber stress was approximately 10% greater than the measured tensile strength. The strain energy required to rupture this soil in axial tension, taken as the area under the stress‐strain curve, was shown to increase by only 20% for a sixfold increase in tensile strength and to be almost proportionately related to the energy required to produce a fixed degree of soil breakup in a drop‐shatter test.