FATIGUE PROPERTIES OF CEMENT STABILIZED SAND

ONDERZOEK NAAR HET VERMOEIINGSGEDRAG VAN ZANDCEMENT

Taking as a bsis the BISAR programme and the first series of measurements carried out along a 15 state highway an investigation was made into the fatigue behaviour of cement stabilized sand. In this investigation the influence of 1 million load repetitions upon the tensile strength was studied amongst other things. In a second investigation attempts were made to establish a relationship between the strain at the start of the fatigue tests and the life of sand cement beams. In a third investigation this relationship was tested once more, this time by a statistically justified method. Apart from the above-mentioned, further data were obtained concerning tensile strengths, flexural strengths, strains and moduli of stiffness. An analysis of the results reveals the following picture: (1) the type of sand and the cement content are essential factors influencing the tensile strength; (2) the strain at failure and the static modulus of stiffness are strongly dependent on moisture content; (3) dependent on the type of sand, cement content and moisture content, stiffness moduli between 7.2 and 22.0 kn/sq mm, determined by static tensile testing, are found; (4) after fatigue testing, values between 6.4 and 19.1 kn/sq mm are found for this modulus of stiffness; (5) dynamic modulus of stiffness values between 8.0 and 19.9 kn/sq mm, dependent on the strain and frequency, are found by testing with A third-point loading fatigue testing machine. It is assumed that the structural advantages of cement stabilised sand will always be present if the pavement is designed in such a way as to preclude the occurrence of strains exceeding one third of the strain at failure. /TRRL/

  • Availability:
  • Corporate Authors:

    Verenging Het Nederlandsche Wegencongres

    Postbus 2200
    The Hague,   Netherlands 
  • Authors:
    • Kop, A R
  • Publication Date: 1976-10

Language

  • Dutch

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 296-306
  • Serial:
    • WEGEN
    • Volume: 50
    • Issue Number: 10
    • Publisher: CROW
    • ISSN: 0043-2067

Subject/Index Terms

Filing Info

  • Accession Number: 00174093
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jul 19 1978 12:00AM