AASHTO M 33M/M 33-21 PDF Download

The AASHTO M 33M/M 33-21 standard is a specification that addresses the requirements for bituminous preformed expansion joint filler used in concrete construction. The purpose of this standard is to provide guidelines and criteria for the manufacturing, testing, and installation of this type of filler in order to ensure its suitability and performance in concrete structures.

It is important to note that this specification offers two options for units of measurement: SI units (M 33M) and inch-pound units (M 33). It is emphasized that these two systems are not equivalent, and each system must be used independently. Combining values from both systems may lead to nonconformance with the specification. The applicable values for ordering this material are the inch-pound units, as indicated in brackets in the text.

This standard also references two other AASHTO specifications, M 153 and M 213, which should be considered for further guidance and information related to the construction and use of bituminous preformed expansion joint fillers.