Viscosity of Asphalt Cements at Intermediate Pressures

Autor:	R W Lodge, H E Schweyer
Rok vydání:	1974
Předmět:	Viscosity Volume (thermodynamics) Capillary action Asphalt Chemistry Flow (psychology) Mineralogy General Medicine Composite material Glass transition
Zdroj:	Product R&D. 13:202-208
ISSN:	1943-3026 0091-1968
DOI:	10.1021/i360051a010
Popis:	A suspended two-piston capillary system for measuring flow of asphalt cements at up to 700 atm is described. The method was used to report the variation in viscosity with pressure on 14 different asphalt cements at 10, 25, and 60 DEG C. The general applicability of the Doolittle exponential relation for the data was demonstrated, and a discussion of the implications of free volume and glass transition is included. The effect of pressure on the temperature susceptibility of asphalts as plotted on the standard ASTM chart was illustrated. Attempts were made to generalize the results for the 14 asphalts in terms of equation parameters. /Author/
Databáze:	OpenAIRE
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