Mineral Aggregate

2026-11-03

1 . The aggregate base course material shall consist of an intimate mixture of graded aggregate , coarse and fine , and shall be practically free from vegetation or other deleterious substances . Coarse aggregate ( material retained on a No . 10 ( 2 . 00mm ) sieve ) shall consist of sound , tough , durable particles or fragments of gravel , stone , mine chats , disintegrated granite , crushed concrete , or a combination thereof . Fine aggregate shall be sand , stone dust , or other inert , finely - divided mineral matter . a . At least 40 percent of that portion of the completed mixture retained on the No . 4 ( 4 . 75 mm ) sieve shall be composed of uniformly graded crushed particles ( pieces of aggregate with one or more fractured faces resulting from artificial crushing ). 2 . The coarse aggregate retained on the 3 / 8 inch ( 9 . 5 mm ) sieve of the finished mixture shall have a percent of wear . Los Angeles Abrasion Test , of not more than 45 . No source of material used in the blend shall have a percent of wear of more than 45 . The aggregate shall have an aggregate durability index of 40 or more .

Oklahoma

2026-04-08