Multi-Purpose Grinders

Asphalt Grinders

From Roof to Road

Asphalt Shingle Grinding (ASG) is produced by processing asphalt roofing shingles to a small spec, generally under 3/8” to salvage the valuable asphalt and sand. Grinding asphalt shingles is a recycling effort which diverts materials from the landfill and can reduce road building costs.

ASG is mixed in asphalt mixes in amounts generally under 5% to displace expensive virgin asphalt. The asphalt mix is used for driveways, parking lots and roads.

Recommended Tooling

Peterson High Abrasion Grinding Bits are the most cost-effective bits on the market for asphalt shingle grinding. The cast carbide technology combines the hardness of cemented tungsten carbide with the toughness of air-hardened steel to form a unique matrix that is extremely wear resistant in the most abrasive applications. Reinforced hard-face corners helps to maintain the original shape of this bit prolonging service life.

Successful asphalt shingle operators install a Peterson 1” round Breaker Grate in the #1 position. The chromium steel breaker bars on this grate act as additional anvils breaking up material and adding wear life to the grate. The Breaker Grate is followed by three 1” round AR500 grates in the #2, #3, & #4 positions. This combination of grates produces consistent end product sizing in a single pass for asphalt shingles.

Trash to Treasure

By Kevin Yanik Portable Plants & Equipment, September 2014 Brand-new horizontal grinders don’t come cheap. And it’s difficult to justify an investment in one if it’s going to sit idle for stretches …

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Rising to the occasion

The Tennessee Department of Transportation’s allowance of recycled asphalt shingles in road mix has spurred recycling business statewide. By Vaugn Cassidy Construction & Demolition Recycling, November 2015 Recycled road material is nothing new. …

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