Impact statement: This nationwide research is aimed at identifying or developing the best methodology to measure aggregate shape properties in an effort to address the impact of aggregate shape selection on building more durable and longer lasting pavements.

This study aims at identifying or developing a test method for measuring shape, angularity and texture characteristics of aggregates. The research approach includes collecting information on both aggregate characteristics and methods used to measure them. A methodology has been developed to evaluate potential tests and conclude that the final recommended test is based on sound scientific concepts, able to characterize the different aspects of aggregate characteristics, give results that are easy to interpret, and practical in terms of labor requirements, ease of use, field applicability, and cost.