AASHTO R 90-18 PDF Download

AASHTO R 90-18 is a standard practice that provides guidelines for sampling aggregate products. The purpose of this standard is to ensure that the samples collected are representative of the aggregate being tested.

The standard outlines various sampling methods, including sampling from conveyor belts, transport units, roadways, and stockpiles. These methods ensure that the samples are taken from different sources and locations to provide an accurate representation of the aggregate product.

The standard highlights the importance of following proper procedures when sampling aggregate products to determine their compliance with specifications. By following these procedures, the samples collected will accurately reflect the quality and characteristics of the aggregate being tested.