Pennsy Supply is the largest producer of aggregate in central Pennsylvania, producing more than nine million tons every year consisting of primarily crushed stone, sand and gravel Mining mostly dolomitic limestone and calcium carbonate, Pennsy is able to produce an extensive range of small to large size aggregate used to the specifications ....

ASTM 57 Stone Specifications By Tamara , ASTM has created a numbering system to classify rocks and crushed stone based on its size ASTM number 57 stone is large enough to allow drainage while supporting asphalt and cement It is used in road beds, foundation beds and gravel walkways...

Specifications For CRUSHED AGGREGATE BASE COARSE 2 3 COMPACTION GRAVEL , The aggregate shall consist of hard, durable particles of crushed stone or crushed gravel and a filler of natural sand, stone sand or other finely divided mineral matter Over-sized material, encountered in deposit, from which the material is taken shall be ....

Abstract This specification covers the quality and sizes of crushed stone, crushed slag, crushed expanded shale, crushed expanded clay, crushed expanded slate, and crushed or uncrushed gravel suitable for use as aggregate in single or multiple bituminous surface treatments...

AASHTO 57 Stone Specs AASHTO 57 stone as defined by quarries, state agencies, etc is an open-graded, self-compacting aggregate blend of size 5, 6, 7 stone This material cannot be compacted in a true sense, but can be properly oriented with compaction equipment This is particularly important when using 57 stone under Flexi-Pave surfac...