CRACKING IN CEMENT STABILIZED SOIL IN THE OMSK REGION /IN AUSSIAN/

DETAILS ARE GIVEN OF THE CLIMATIC CONDITIONS IN THE OMSK REGION, WHERE VARIATIONS IN TEMPERATURE REACHING 80 DEG C CAUSE SPECIAL PROBLEMS CONCERNING SOIL STABILIZED WITH CEMENT. BECAUSE OF THE INSUFFICIENT DEFORMABILITY OF THE MATERIAL, CRACKING OCCURS DUE TO THERMAL SHRINKAGE. OBSERVATIONS WERE CARRIED OUT IN JANUARY AND FEBRUARY 1966 IN WESTERN SIBERIA ON A NUMBER OF EXPERIMENTAL SECTIONS CONTAINING SAWN JOINTS EVERY 5 TO 10 M. THE JOINTS WERE SAWN DOWN TO 2/3 OF THE DEPTH OF THE SOIL STABILIZED WITH FRESH CEMENT, AND THREE LAYERS OF PARCHMENT-LIKE PAPER WERE INSERTED IN THE JOINTS OF ONE OF THE EXPERIMENTAL SECTIONS WHILE A SAND/CEMENT MIXTURE STABILIZED WITH BITUMEN WAS USED IN THE JOINTS OF ANOTHER SECTION. OBSERVATIONS LED TO THE FOLLOWING CONCLUSIONS: (1) THE PRESENCE OF CRACKS DUE TO THERMAL SHRINKAGE MODIFIES THE BEHAVIOR OF PAVEMENTS BY DECREASING THEIR DURABILITY; AND (2) IN ORDER TO PREVENT CRACKING, THE DEFORMABILITY OF CEMENT-STABILIZED SOIL MUST BE INCREASED, RESULTING IN A WIDER SPACING OF THE CRACKS. CEMENT-STABILIZED LAYERS WITH THERMAL SHRINKAGE JOINTS MUST BE KEPT UNDER CONSTANT OBSERVATION. /LCPC(A)/RRL/

  • Supplemental Notes:
    • pp 120-131, 5 FIG, 2 PHOT
  • Authors:
    • Slavutskii, O A
  • Publication Date: 0

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  • Accession Number: 00232165
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Apr 18 1971 12:00AM