This assessment manual was prepared to aid the process of renewing existing pavements so that long lives can be achieved. To achieve this goal, a systematic collection of relevant pavement-related data is needed. Further, such data need to be organized to maximize the usefulness in the pavement decision-making process. To that end, this manual will help. The types of data collection contained in this manual range from basic information such as distress surveys to insights on traffic impacts. The last section provides information on life-cycle assessments (environmental accounting). The use of this type of assessment is receiving increased attention and is likely to be widely applied in the future. The manual is intended to complement the design tools developed by SHRP 2’s R23 study. The types of data critical for making pavement-related decisions are described along with methods (analysis tools) for using the information in decision-making applications. It is not assumed that all data categories will be collected or assessed for a specific renewal project. Rather, the manual is designed as a reference document that provides information relevant to all renewal strategies considered in SHRP 2 Renewal Project R23. The following 11 categories are described in this manual: • Pavement distress survey, • Pavement rut depth and roughness • Ground-penetrating radar (GPR), • Pavement cores, • Dynamic cone penetrometer (DCP), • Subgrade soil sampling and tests, • Traffic loads for design, • Construction productivity and traffic impacts, • Life-cycle assessment (environmental accounting), and • Miscellaneous material properties. Each data category is structured much the same way, into (1) the purpose of collecting the data, (2) applicable standards, definitions, and data organization recommendations, and (3) analysis tools. (Author/publisher)
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