Measuring density with a non-contact measurement: Application of the month
09. December 2019
Asphalt shingles are made of fiberglass, asphalt, and ceramic-coated minerals. Fiberglass mats are run through a machine, coating the mats in asphalt multiple times. Near the end of the process, the ceramic-coated minerals are added for protection and color. The ratio of these two ingredients changes the asphalt mixture’s adhesive properties and its density, so a density measurement is critical for monitoring the adhesive properties of the mixture as it’s applied.