AASHTO PP 84-20 PDF Download

The AASHTO PP 84-20 standard addresses the need for specifications for concrete pavement mixtures that focus on performance characteristics rather than prescriptive requirements. This shift allows for increased innovation and flexibility in designing mixtures that meet specific performance requirements. The standard recognizes the use of alternative performance measures instead of relying solely on prescriptive methods. It provides state highway agencies with options and choices to best suit their needs.

The standard emphasizes the importance of reducing construction variability in order to reduce the life cycle cost of concrete pavements. This is achieved through a robust quality control program that covers all stages of the construction process. The performance values included in the standard are based on an average concrete pavement life of 30 years and take into account the normal materials and testing variability. As service life prediction models and test methods improve, the risk in predicting actual service life is expected to decrease.