AASHTO M 243-96 (2017) PDF Download

The AASHTO M 243-96 (2017) standard provides guidelines for the application of asphaltic mastic coating on corrugated metal structural plates. This coating is used in the construction of metal culverts.

The standard defines the requirements for the field application of the coating, which is applied to the external surfaces of the corrugated metal structural plates. It specifies the material properties, such as the viscosity, adhesion, and curing time, that the asphaltic mastic coating should meet. Additionally, it outlines the necessary preparation of the metal surfaces before the coating is applied, including cleaning and priming.

The standard also addresses the application procedures, such as the required thickness of the coating and the methods of application. It provides guidelines for proper mixing, handling, and storage of the coating material. Furthermore, the standard outlines the quality control measures that should be implemented during the coating process, including inspection and testing requirements.