AN ATTEMPT TO EXPLAIN THE RUBBER MATTRESS PHENOMENON (IN FRENCH)

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. AN EXPLANATION IS PROPOSED BASED ON THE SUDDEN VARIATION OF SKEMPTON'S COEFFICIENT B (COEFFICIENT OF INTERSTITIAL PRESSURE) IN FUNCTION OF THE DEGREE OF SATURATION SR: THE RUBBER MATTRESS PHENOMENON WOULD OCCUR WHEN THE DEGREE OF SATURATION EXCEEDS A VALUE S SUB RO AROUND 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 SR MAY BE TO A LARGE EXTENT EXPLAINED BY THE APPLICATION OF MARIOTTE'S LAW. /LCPC/RRL/AUTHOR/

  • Supplemental Notes:
    • No 30, pp 113-118, 3 FIG, 1 REF
  • Authors:
    • Arquie, G
  • Publication Date: 1968-3

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Filing Info

  • Accession Number: 00234509
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Mar 15 1971 12:00AM