AN ATTEMPT AT AN EXPLANATION OF THE PHENOMENON OF THE RUBBER MATTRESS

THE TERM RUBBER MATTRESS IS USED TO DENOTE A PHENOMENON WHICH OCCURS WITH FINE SOILS UNDER CERTAIN CONDITIONS OF WHICH LITTLE IS KNOWN. WHEN THE COMPACTOR PASSES OVER THE SOIL, THE LATTER IS STRONGLY DEPRESSED, SWELLS UP ON EITHER SIDE OF THE COMPACTOR, AND RISES AGAIN AFTER THE MACHINE HAS PASSED. THE SOIL BEHAVES LIKE A RUBBER MATTRESS. THE ARTICLE PROPOSES AN EXPLANATION BASED ON THE SUDDEN VARIATION OF SKEMPTON'S COEFFICIENT B (COEFFICIENT OF INTERSTITIAL PRESSURE) IN FUNCTION OF THE DEGREE OF SATURATION SUB R: THE RUBBER MATTRESS PHENOMENON WOULD OCCUR WHEN THE DEGREE OF SATURATION EXCEEDS A VALUE SUB RO IN THE NEIGHBORHOOD OF 0.85 TO 0.90. AT THIS VALUE, B SUDDENLY INCREASES. AND WITH A HIGH VALUE OF B, THE INTERSTITIAL PRESSURE TENDS TO RISE MARKEDLY. THE RUBBER MATTRESS MAY BE THE PHENOMENON WHICH PREVENTS THE EXISTENCE OF A HIGH INTERSTITIAL PRESSURE UNDERNEATH THE COMPACTOR AND A LOW INTERSTITIAL PRESSURE ELSEWHERE. TWO DIFFERENT MODELS ARE PROPOSED TO REPRESENT THE PHENOMENON. THE RAPID VARIATION OF B IN FUNCTION OF SUB R MAY BE TO A LARGE EXTENT EXPLAINED BY THE APPLICATION OF MARIOTTE'S LAW. /AUTHOR/

  • Supplemental Notes:
    • No 30, pp 113-118
  • Authors:
    • Arquie, P
  • Publication Date: 0

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  • Accession Number: 00232490
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 15 2004 2:43AM