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This article in SSSAJ

  1. Vol. 41 No. 1, p. 26-29
    Received: July 6, 1976
    Accepted: Sept 9, 1976

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Soil Elastic Constants: II. Application to Analysis of Soil Cracking1

  1. A. A. Briones and
  2. G. Uehara2



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.

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