Load strain properties and splitting of roof membranes

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Journal titleASTM Special Technical Publication
Pages7890; # of pages: 13
SubjectRoofing; roofing products; tensile strength; shearing tests; strain; temperature; bitumens, roofing membrane; tensile strength, shear testing; glass transition temperature; Roofs; Roofs; Couvertures; produit de couverture; resistance a la traction; essai de cisaillement; deformation; temperature
AbstractThe load-strain properties of several bituminous membranes when tested in tension are examined and the effect of temperature on the breaking load, load-strain modulus, and breaking strain is considered. The shear properties of the bitumens used as adhesives in the production of the membranes are examined at temperatures from -15 F (-26 C) to 32 F (0 C) at a rate of shear of 0.21 per min. The observed transition in the shear modulus of the asphaltic material at 0 F (-18 C) is found to coincide with the glass transition temperature of this material. The development of a critical- thickness concept is described, and it is suggested that the performance of roofing membranes under deformation may be controlled by the load-strain properties of the membrane and the shear properties of the adhesive.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number9444
NPARC number20375746
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Record identifier1e588588-31a5-4259-afbc-f6049bf4fec0
Record created2012-07-23
Record modified2016-05-09
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