m303Further pure mathematics (M303) starts once a year – in October. This page describes the module that will start in October 2025. We expect it to start for the last time in October 2029.Standard Specification for Lime for Asphalt Mixtures AASHTO Desnation: M 303-89 (2019) Technical Subcommittee: 3a, Hydraulic Cement and Lime Release: Group 1 (April) AASHIO