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Effect of heat-ageing on the thermal and mechanical properties of APP- and SBS-modified bituminous roofing membranes

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada
  2. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectRoofing; Building Envelope; Roofs; Heat performance; Couvertures; Enveloppe du bâtiment
Abstract
The effect of heat-ageing on four bituminous roofing membranes, two modified with a tacticpolypropylene (APP) and two modified with styrene-butadiene-styrene (SBS) was studied using tensile testing and dynamic mechanical thermal analysis (DMA). The samples were heated at 80oC for 7, 28, 84 and 168 days and were tensile tested at 23, 0, -10, -20 and - 30°C. Each heat-aged sample was also subjected to thermomechanical testing to find its glass transition temperature T,. The results show significant variation in the effect of heat-ageing on tensile strength and elongation of membranes. T, values differ with the modifiers and other ingredients of the membranes and are affected by heat-ageing. The influence of the glass transition zone measured by DM A is also reflected in the tensile test results.
Publication date
In
  • Materials and Structures 26, no. 160 (July 1993): 355–361.
LanguageEnglish
Peer reviewedYes
IdentifierIRC-P-3448
NRC numberNRCC 36902
NRC-IRC-3443
NPARC number20375332
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Record identifier332ac77c-5249-4cc4-94a1-560c237c2b76
Record created2012-07-23
Record modified2020-06-06
Date modified: