Accession Number : AD0675704

Title :   A BRITTLE POINT TEST FOR LOW TEMPERATURE STUDIES OF BITUMENS.

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 : NOV 1963

Pagination or Media Count : 13

Abstract : In order to study the low temperature performance of asphalts, improvements have been made for determining the brittle point of bituminous materials. A new procedure for preparing the coated plaques is proposed which enables a film of asphalt of known thickness to be prepared. The apparatus has been mechanized and the spring steel plaque replaced with a clear polyvester film. The brittle point unit is cooled at any desired rate using alcohol as the coolant. Studies have been made of effect of film thickness and rate of cooling upon the brittle point temperature. Study of the effect of overheating a dead-level roofing asphalt is shown to be one of the uses of the instrument. (Author)

Descriptors :   (*BITUMINOUS COATINGS, LOW TEMPERATURE), (*ROOFS, MECHANICAL PROPERTIES), BRITTLENESS, TEST EQUIPMENT, MODEL TESTS, THICKNESS, COOLING, CRACK PROPAGATION, DEGRADATION, ACCURACY, THEORY, TEMPERATURE, ASPHALT, TAR, PITCH(MATERIAL), CANADA

Subject Categories : Coatings, Colorants and Finishes
      Miscellaneous Materials
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE