AASHTO M 213-21 PDF Download

The AASHTO M 213-21 standard outlines the requirements for preformed expansion joint fillers used in concrete paving and structural construction projects. These fillers are designed to have minimal extrusion under compression and significant recovery once the compression is released.

The purpose of this standard is to provide guidance on the characteristics and properties of expansion joint fillers that are suitable for use in concrete construction. By using these preformed fillers, contractors can ensure that proper expansion and contraction of concrete structures can occur without compromising their integrity.

The standard specifies that the fillers must possess the ability to recover their original form and dimensions after being compressed. This ensures that they can effectively accommodate the movement and temperature variations that occur in concrete structures. Additionally, these fillers should exhibit minimal extrusion, meaning that they should not deform or separate from the joint as a result of pressure or load.