DURABILITY OF POROUS SYSTEMS IMPREGNATED WITH DICYCLOPENTA-DIENE-MODIFIED SULPHUR

The effectiveness of dicyclopentadiene (dcpd)-modified sulphur in improving the durability of impregnated portland cement systems is assessed. Portland cement paste and porous Vycor glass samples were impregnated with modified and unmodified sulphur and some samples were heated to 180 deg C. Comparison of the measured modulus of elasticity with values calculated from mixture rules provided a qualitative measure of the adhesion between matrix and impregnant. Changes in length and modulus of elasticity with time of exposure at 100 per cent relative humidity were monitored and formed the basis of durability assessment. Samples impregnated with dcpd-modified sulphur and heated at 180 deg C showed the least distress. It is concluded that two factors control durability: interaction of the matrix with the impregnant, which influences the rate of ingress of water to the interface, and interaction between water and solid surfaces at the interface. (Author/TRRL)

  • Availability:
  • Corporate Authors:

    Construction Press

    Longman House, Burnt Mill
    Harlow, Essex CM20 2JE,   England 
  • Authors:
    • Beaudoin, J J
    • FELDMAN, R F
  • Publication Date: 1984-2

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Filing Info

  • Accession Number: 00387487
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Aug 30 1984 12:00AM