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Soil Elastic Constants: II. Application to Analysis of Soil Cracking
Author(s) -
Briones A. A.,
Uehara G.
Publication year - 1977
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/sssaj1977.03615995004100010012x
Subject(s) - cracking , vertisol , tension (geology) , materials science , oxisol , elastic modulus , modulus , composite material , soil water , ultimate tensile strength , geology , soil science
Soil briquets from a Vertisol and two Oxisols, equilibrated over a range of 15 to 936 bar water tension were subjected to a constant rate of strain. The trend in measured flexure and stress at rupture was adequately predicted by theory, but the measured values differed from calculated values by a large factor. The breaking stress or modulus of rupture followed the same trend as the ratio of the material's surface tension to a parameter which measures pre‐existing, microcracks. Elastic constants were necessary, but not sufficient to accurately predict cracking. The precursor to cracking appears to be prefailure microcrack formation which determines the manner of soil cracking.