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Develop Design of Hot-Mix Cold-Laid (HMCL) Mixtures with the Superpave Gyratory Compactor

项目名称：	Develop Design of Hot-Mix Cold-Laid (HMCL) Mixtures with the Superpave Gyratory Compactor
摘要：	Different from patching materials, hot-mix cold-laid (HMCL) asphalt mixes are often used as a blade-on/level up material in Texas. Currently, the HMCL asphalt mixes are designed with a Texas Gyratory Compactor (TGC) and checked with the Hveem stability test. The Materials and Tests Division (MTD) of Texas Department of Transportation (TxDOT) is undertaking an initiative to design all asphalt mixes with the Superpave Gyratory Compactor (SGC) and officially phase out the TGC in the upcoming Standard Specifications Book update in 2024. As a result, there is an urgent need to study HMCL mix design with the SGC and replace the Hveem stability test with a new performance related test. The objective of this project is to establish a new HMCL mix design method with the SGC and new performance tests ensuring high quality and long-lasting HMCL mixes which will save millions of dollars of taxpayer money annually. To achieve this objective, the research team will review the literature and conduct extensive laboratory TGC, SGC, and performance tests; then develop the SGC-based HMCL mix design method including performance tests and associated criteria; and finally recommend specifications changes.
状态：	Active
资金：	210004
资助组织：	Texas Department of Transportation
管理组织：	Texas Department of Transportation
项目负责人：	Schwerdt, Tom
执行机构：	Texas A&M Transportation Institute
主要研究人员：	Zhou, Fujie
开始时间：	20220901
预计完成日期：	20231130
主题领域：	Highways；Materials；Pavements