AASHTO T 112-00 (2017) PDF Download

AASHTO T 112-00 (2017) is a standard method used for the determination of clay lumps and friable particles in natural aggregates. This method is similar to ASTM C142-97, but there are some specific provisions outlined in this document.

The purpose of this standard is to provide a reliable and approximate measure of the presence of clay lumps and friable particles in aggregate materials. Clay lumps and friable particles can negatively affect the performance and strength of concrete and asphalt mixtures, so it is important to accurately assess their content in aggregate materials.

This method involves preparing a test sample by sieving the aggregate and then performing a visual inspection to identify and classify clay lumps and friable particles. The standard provides detailed guidelines on how to identify these particles and provides criteria for their classification.