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原文传递 Laboratory Comparison of Solvent-Loaded and Solvent-Free Emulsions; Interim rept. Dec 97-Jan 00

题名：	Laboratory Comparison of Solvent-Loaded and Solvent-Free Emulsions; Interim rept. Dec 97-Jan 00
作者：	Leahy, R. B.; Root, S.; James, D. D.
关键词：	Pavements; Sealers; Asphalt emulsions; Maintenance; Construction; Comparison; Oregon; Highways; Surface treatments; Seal coats
摘要：	Asphalt emulsions have been widely used in highway construction and maintenance since the 1920s, initially as dust palliatives and spray applications. More recently, they have been used in more diverse paving applications such as base and surface course mixes, surface treatments and maintenance activities. The Oregon Department of Transportation (ODOT) uses nearly 450,000 Mg (500,000t) of cold mix, i.e., emulsified asphalt concrete (EAC), for construction and maintenance at a cost of approximately $10 million per year. For safety, environmental and economic reasons, the use of emulsions is likely to increase dramatically in the next ten years. The decrease in highway funding and the public's heightened environmental awareness demand innovative technology for roads of the 21st century. Recognizing the opportunities inherent in this challenge, some commercial enterprises have already developed solvent-free alternatives. Preliminary laboratory testing of solvent-free emulsions in standard dense- and open-graded EAC mixes indicated that mechanical properties are comparable to or exceed those of conventional solvent-loaded emulsions. Accordingly, the objective of this research was to quantify the difference between conventional solvent-loaded and solvent-free EAC as measured by indirect tensile strength.
总页数：	54p
报告类型：	科技报告