SYMPOSIA PAPER Published: 01 January 1980
STP36110S

Developments in Test Methods for Rubberized Asphalts

Source

Recent trends in the formulating of hot applied rubberized asphalts have led to increased cohesive strengths in these materials. As a result, it was noted that these products would fail adhesively in the conventional toughness-tenacity test, making it impossible to assess their true elastomeric nature. This problem has been overcome by redesigning the test equipment to promote cohesive failure. Both the tension head and the toughness cup of the Benson test required modification to arrive at an acceptable test, the hemispherical head being replaced by a threaded bolt, and the cup being deepened to accommodate more test material and thus allow for the larger volume of the new tension head. Use of the new test apparatus has been written into the Canadian Government Specifications Board specification on Hot Applied Rubberized Asphalts.

Author Information

Melley, RE
Uniroyal Limited, Braceridge, Ont., Canada
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Details
Developed by Committee: E06
Pages: 801–808
DOI: 10.1520/STP36110S
ISBN-EB: 978-0-8031-4768-3
ISBN-13: 978-0-8031-0325-2