Concrete slabs are generally constructed using as a base coarse aggregate 57s 68s dense graded aggregate As an alternative 25s 26s crusher run 21A Sand And Gravel in Appomattox on YP of construction aggregates primarily crushed stone sand and gravel and a major producer of aggregat Base 21A 21B 25s 26s 1/2 Crusher Run and CBR30 Specifications Erosion Control RipRap Class AI Class I Class II and Class III Specifications
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