AASHTO M 240M/M 240-20 PDF Download

AASHTO M 240M/M 240-20 is a standard specification that covers blended hydraulic cements for various applications. Blended hydraulic cements are made by combining different materials such as slag, pozzolan, limestone, portland cement or portland cement clinker, and slag with lime. The standard provides guidelines on the kinds of ingredients that can be used in blended hydraulic cements and the proportions in which they should be mixed.

Unlike other hydraulic cement specifications, such as ASTM C1157/C1157M, AASHTO M 240M/M 240-20 also includes performance requirements in addition to ingredient and proportion specifications. This means that the blended hydraulic cements must meet certain performance criteria to be accepted and used for their intended applications.