详情

Characterizing Existing Hot-Mix Asphalt Layer Damage for Mechanistic Pavement Rehabilitation Design

项目名称：	Characterizing Existing Hot-Mix Asphalt Layer Damage for Mechanistic Pavement Rehabilitation Design
摘要：	The increasing focus on existing hot-mix asphalt (HMA) pavement rehabilitation by State departments of transportation (DOTs) as HMA pavements are the predominant pavement type in the United States, State DOTs require local calibration of the Mechanistic-Empirical Pavement Design Guide (MEPDG) HMA overlay of existing HMA pavement methodology. Although this methodology is a great improvement on the 1993 American Association of State Highway and Transportation Officials (AASHTO) HMA overlay design procedure, it has significant shortcoming, such as: (1) The Level 1 procedure for characterizing existing HMA pavement structural capacity/condition based on falling weight deflectometer (FWD) deflection testing, coring, extraction of cores, and lab characterization of the HMA cores binder and volumetric properties has to date not been calibrated. (2) The Level 2 and 3 procedures, though calibrated, are based on pavement surface distress and condition rating making it at best highly subjective. The need to review, enhance as needed, and calibrate the MEPDG Levels 1, 2, 3 procedures for characterizing existing HMA pavement structural capacity/condition. �The purpose of this research is as follows: (1) Develop and calibrate objective methodologies for characterizing existing HMA pavement damage for HMA and portland cement concrete (PCC) overlay design that will, as a minimum, be enhancements to current MEPDG Level 1, 2, and 3 methodologies. (2) The new methodologies must be compatible with the Interim AASHTO MEPDG Level 1, 2, and 3 methodologies. (3) The new methodologies must be practical and implementable within the current AASHTO Interim MEPDG framework.
状态：	Active
资金：	249771
资助组织：	Federal Highway Administration
项目负责人：	Wiser, Larry
执行机构：	Applied Research Associates, Incorporated
主要研究人员：	Sadasivam, Suri
开始时间：	20170721
预计完成日期：	20160720
实际结束时间：	0