Patent ID: 6615643
Filing Date: 2003-09-09
Classification: G01N

Abstract:
A method of determining a material property such as the absorption or specific gravity of an aggregate material, comprising the steps of:drying a first aggregate material sample; determining the dry weight of the first aggregate material sample; placing the first aggregate material sample in liquid in a first container; adding liquid to the container with the first aggregate sample to fill the container to a desired volume; measuring the weight of the first container holding the first aggregate material sample and the liquid after the step of adding liquid; drying a second aggregate material sample; determining the dry weight of the second aggregate material sample; vacuum sealing the second aggregate sample in a second container; immersing the second aggregate material sample while it is held in the sealed second container in the liquid bath; opening the sealed second container as it is held immersed in the liquid bath to allow the liquid to contact the second aggregate material sample; measuring the weight of the second aggregate material sample in the second open container while they are held immersed in the liquid bath; and determining at least one material property of the aggregate undergoing analysis based on the weights obtained in the two measuring steps.