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原文传递 HOT-MIX ASPHALT VOLUMETRICS REVISITED: A NEW PARADIGM.

题名：	HOT-MIX ASPHALT VOLUMETRICS REVISITED: A NEW PARADIGM.
作者：	Coree-BJ
关键词：	AGGREGATES-; AIR-VOIDS; BINDER-CONTENT; BITUMINOUS-BINDERS; BITUMINOUS-MIXTURES; HOT-MIX-ASPHALT; HOT-MIX-PAVING-MIXTURES; MARSHALL-MIX-DESIGN; MIX-DESIGN; SPECIFIC-GRAVITY; SUPERPAVE-; VOLUMETRIC-ANALYSIS
摘要：	As early as 1905, Richardson recognized the importance to performance of the relative proportions, by volume, of the material components of bituminous mixtures. In the 1940s, Marshall explicitly addressed the volumetric percentages of air voids and of the degree of void saturation by asphalt. In the late 1950s, McLeod clearly demonstrated and justified the appropriate aggregate specific gravities to be used in volumetric computations and emphasized the importance of the combined volumes of the air voids and effective asphalt binder. These various volumetric parameters have since formed a principal part of the Marshall design method and have more recently been enshrined into the Superpave system. The definitions of the various volumetric parameters and their interrelationships are revisited here. An instructive and useful chart has been developed with which mixtures of different volumetric characteristics may be compared and, through trajectory analysis, reduced to a common basis. A further simple graphical method has been developed that may be used to analyze, volumetrically, both Marshall and Superpave mix designs. The latter method can be used as a point-estimate method to identify the binder content that will yield any given air void content. Although no new technology is presented here, old information is presented in a new way--a new paradigm.
总页数：	Transportation Research Record. 1999. (1681) pp50-58 (8 Fig., 7 Ref.)
报告类型：	科技报告