Measuring adhesion and cohesion of rubberized asphalts

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Proceedings titleASTM Special Technical Publication
ConferenceRoofing Research and Standards Development: Symp.: 03 December 1986, New Orleans, Louisiana, USA
Pages7591; # of pages: 17
SubjectRoofing; rubberized asphalt; adhesion; cohesion; bituminous roofings; tests; adhesion; cohesion; ductility; roofing; rubberized asphalt; toughness-tenacity test; waterproofing; peak load value; roofing materials; hot-applied rubberized asphalts; Roofs; Moisture performance; Couvertures; asphalte caoutchouté; adhérence; cohesion; couverture bitumineuse; essai
AbstractAdhesion and cohesion are important aspects of performance of rubberized asphalts used for roofing and waterproofing. The conventional toughness-tenacity test performed with either the hemispherical or screw-type pull-head gives results that represent a combination of adhesive and cohesive forces. In many cases adhesion is lost, thus affecting peak load values. A new, tapering grooved head designed to improve the adhesion aspect has been tested with four commercial samples of rubberized asphalt. The results are compared with those for other heads. Most tests were conducted at several speeds of loading to study the effect on toughness and tenacity values. In a second series of tests, the effect of adhesion was eliminated and only cohesion determined. Finally, straight pull-off adhesion tests and ductility tests were conducted on all samples. The results suggest that the present accepted test methods and numerical requirements for the related physical properties in standards for hot-applied rubberized asphalts should be reassessed.
Publication date
PublisherR.A.Critchell, Ed., American Society for Testing and Materials, Publ.
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number29317
NPARC number20378567
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Record identifier636effd7-fc6e-4de4-bd3f-d97c19544d03
Record created2012-07-24
Record modified2016-05-09
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