Durability of porous systems impregnated with dicyclopentadiene modified sulphur

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TypeArticle
Journal titleInternational Journal of Cement Composites Lightweight Concrete
ISSN0142-095X
Volume6
Issue1
Pages138; # of pages: 6
Subjectcement; sulfur; mechanical properties; durability; porosity; concrete durability; sulphur impregnation; cement paste; vycor glass; elastic modulus; expansion; fracture; moisture curing; composite materials; modified sulphur; wetting; additives; failure; Concrete
AbstractThe 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 degrees 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 RH were monitored and formed the basis of durability assessment. Samples impregnated with DCPD-modified sulphur and heated at 180 degrees 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.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
IdentifierDBR-P-1218
NRC number23580
3336
NPARC number20375120
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Record identifier03d55828-5229-451a-85aa-26ff53050118
Record created2012-07-23
Record modified2016-05-09
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