TRB’s National Cooperative Highway Research Program (NCHRP) has issued a request for proposals to develop a mechanistic-empirical model (and associated computational software) for predicting top-down cracking in asphalt pavement layers and incorporation into the American Association of State Highway and Transportation Officials Mechanistic-Empirical Pavement Design Guide Manual of Practice procedures. Proposals are due by April 12, 2012.
A request for proposals for this project was originally released on October 26, 2011; however, no award was made. The purpose of this request for proposals is to initiate a new competition for this project. The research project statement for the project has been slightly modified from the original statement to clarify the research objective and product. This solicitation is open to all proposers, including agencies that responded to the earlier project statement.