30A slag sand is the fine particles only. It is used for the top layer of base in order to set the pavers level.
- Structural base under interlocking paving units
- Surfacing for unpaved paths and driveways
- Surfacing for playing fields
- Structural fill
A dense graded base aggregate, produced by crushing and screening air-cooled iron Blast Furnace Slag. A light brown to gray crystalline aggregate formed simultaneously with the production of iron in a blast furnace. The particles are sized from 3/8″ (9.5mm) to zero (dust).
The 30A Blast Furnace Slag should be placed 4″ to 12″ thick depending upon ground conditions and design loadings, in lifts not exceeding 8″. Prior to the placement of any base material, the grade should be compacted and trimmed to the design density & elevations and be free of any standing water and not in a frozen condition. Base material should be compacted at optimum moisture content (approximately 8% to 10%) to 95% to 100% relative density or to the compaction level as specified in the design plans.