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Verifying Quantities of Materials Used in Asphalt Mixtures at Production Facilities

项目名称：	Verifying Quantities of Materials Used in Asphalt Mixtures at Production Facilities
摘要：	Generally, asphalt mixtures contain asphalt binder, aggregate, and additives such as latex, ground tire rubber, warm mix additives, anti-strip additives, fibers, and mineral fillers. However, because of their environmental and economic benefits, reclaimed asphalt pavement (RAP) and reclaimed asphalt shingles (RAS) may also be used in asphalt mixtures; state departments of transportation (DOTs) have verified the percentages of RAP and RAS used in asphalt mixtures using different approaches such as stockpile measurements and plant recordation. However, additives are often introduced using equipment and control systems that do not provide good means to verify the added quantities. There is no widely acceptable procedures or guidelines for verifying quantities of materials used in asphalt mixtures at production facilities. There is a need to identify the procedures currently available for verifying quantities of materials used in asphalt mixtures at production facilities, develop procedures that better address the different applications and related issues, and prepare guidelines for the application of these procedures. These procedures and accompanying guidelines should help construction and materials engineers in enhancing quality assurance programs and ensuring compliance with contractual requirements. The objectives of this research are to (1) recommend procedures for verifying quantities of materials used in asphalt mixtures at production facilities and (2) prepare guidelines for their application.
状态：	Active
资金：	350000
资助组织：	National Cooperative Highway Research Program；Federal Highway Administration；American Association of State Highway and Transportation Officials (AASHTO)
项目负责人：	Hanna, Amir N
执行机构：	University of Nevada, Reno
主要研究人员：	Hand, Adam J T
开始时间：	20220628
预计完成日期：	20241028
主题领域：	Highways；Materials；Pavements