Accession Number : AD0618815

Title :   EFFECT OF WEATHERING ON THE INCREASE IN HARDNESS OF ASPHALTS.

Descriptive Note : Research paper,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BUILDING RESEARCH

Personal Author(s) : Jones,P. M.

Report Date : JAN 1965

Pagination or Media Count : 7

Abstract : A modified Fraass brittle point test is used to study the hardening of asphalts that accompanies accelerated weathering. Four roofing asphalts exhibit variations in the initial brittle point temperature that may be related to the performance of the materials in an accelerated weathering test. The progressive hardening accompanying weathering is followed by an increase in the brittle point temperature. (Author)

Descriptors :   (*ASPHALT, AGING(MATERIALS)), (*HARDNESS, ASPHALT), TEST METHODS, ROOFS, BITUMINOUS COATINGS, TRANSITION TEMPERATURE, PERFORMANCE(ENGINEERING), BRITTLENESS

Distribution Statement : APPROVED FOR PUBLIC RELEASE