Webinar: How to Meet ASTM Standards for Roofing Shingle Mineral Granules

Asphalt shinglesThe quality and performance of roofing shingles depend on the raw materials used during production and therefore require quality control by particle characterization. These roofing shingles consist of a layer of mineral granules on top of an asphalt layer which is embedded in a fiberglass or cellulose mat. The shingles get fastened to a roof covered with a thin flexible sheeting. The granules, asphalt, mat and sheeting act together to form a durable, flexible and waterproof assembly. The mineral granules must meet standards specifications for size distribution and opacity to ensure minimum damage to the asphalt layer from both mechanical and UV sunlight sources.

In this webinar we discuss the only automated technology on the market that can replace time-consuming, error-ridden manual sieve analysis. Microtrac’s PartAn 3D is a dynamic image particle analyzer that reports the size distribution and opacity requirements as required by ASTM D451. This size distribution is outside the size limits of laser diffraction technology which is often used to replace sieve analysis. Additionally, 3D capabilities of this instrument can be used to indicate coverage efficiency of the granules on the asphalt. Both lab and on-line process models of the instrument will be shown.

This webinar aired on Tuesday, July 17, 2018 at 11AM EDT.


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