Road Aggregate 101: Important Stuff - Welcome to Center .
Dec 01, 2014 · Aggregate Specifications and Requirements. All potential aggregate sources must be thoroughly tested to ensure the quality of the aggregate. The following tests represent some of the industry standards: Sieve Analysis (ASTM C 136, AASHTO T-27): This test method evaluates the gradation of aggregate using a series of sieves.Aggregate Equipment Guide is the best source for news, how-to's and equipment for the Aggregate Industry. We list equipment in all the major aggregate categories including conveyors, feeders, stackers, crushers, magnets, screening equipment, washing equipment, and more. Our website makes it easy to find the machines you need fast.