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Guidelines for Limiting Damage to Flexible and Composite Pavements Due to the Presence of Water

项目名称：	Guidelines for Limiting Damage to Flexible and Composite Pavements Due to the Presence of Water
摘要：	State DOTs are familiar with incidents where pavements suffer unexpected failure due to the presence of water. Typically, significant maintenance or even major rehabilitation is needed to remedy such damage. Past studies have identified many factors that contribute to water-induced damage, over and above those related to the paving materials. Despite the wealth of information on water-induced damage in the technical literature, there is a need for guidelines that identify best practices to limit damage to pavements from water intrusion. These best practices are documented in numerous sources and are practiced by experienced pavement engineers; however, the information has not been assembled in one convenient location. The target audience of the guidelines should be practicing engineers. These guidelines should focus on strategies to limit damage due to the presence of water when constructing, maintaining, or rehabilitating flexible or composite pavement systems. The objectives of this research are to develop (1) guidelines for the practicing engineer, in the form of a proposed AASHTO standard practice, for limiting water-induced damage to new and existing flexible and composite pavements and (2) a syllabus and materials for a 1-day training course on the use of the guidelines by practicing engineers. The guidelines shall be targeted to practitioners in the pavement and materials engineering community. At a minimum, they shall address the effects of: (1) pavement structure (e.g., drainage layers, “bath tubs,” and shoulders) (2) roadway geometry (e.g., cross slope, sag, and ditch lines) (3) regional climate (e.g., wet-freeze) (4) materials (e.g., anti-strip agents and aggregates) (5) construction practices (e.g., longitudinal joint construction and underdrain location) (6) maintenance practices (e.g., crack filling and outlet cleaning) The guidelines shall be supported by technical commentary necessary to enhance their understanding and application by the practicing engineer.
状态：	Active
资金：	349881
资助组织：	Federal Highway Administration<==>American Association of State Highway & Transportation Officials (AASHTO)<==>National Cooperative Highway Research Program
项目负责人：	Harrigan, Edward T
执行机构：	Applied Pavement Technology, Incoporate
开始时间：	20140801
预计完成日期：	20210831
主题领域：	Construction；Design；Highways；Hydraulics and Hydrology；Maintenance and Preservation；Pavements