75/100mm Aggregate

Product Description

A free-draining, open-graded 75/100 mm stone produced from primary quarried rock (e.g., limestone/granite). Supplied to EN 13242 for unbound uses. The large nominal size provides high voids and robust interlock for drainage and stabilisation layers. Not suitable for pipe bedding/surround. For gabions or scour protection, confirm the project spec (gabion work may require specific grading/shape or EN 13383). Typical uses Drainage blankets, soakaways, and filter layers Bridging/stabilising weak subgrade (use with separator geotextile; geogrid if required) Back-of-wall drainage where a coarse, open stone is specified Rock fill and temporary haul road improvement (capped before trafficking) Gabion fill (only if basket mesh and spec allow this size/shape) Key properties Size: 75–100 mm (single-size) Standard: EN 13242 (unbound aggregates) Behaviour: Free-draining, high interlock, very low fines Typical loose bulk density: ≈1.5 t/m³ (varies by rock) Recommended lift thickness: 150–400 mm (project-specific) Coverage guide (approx., at 1.5 t/m³) 100 mm depth → ~6.7 m²/tonne 150 mm depth → ~4.4 m²/tonne 200 mm depth → ~3.3 m²/tonne Quantity formula Tonnes ≈ (Length × Width × Depth in metres) × 1.5 Installation notes Lay over a separator geotextile to prevent fines migration; consider geogrid on very soft ground Place in even lifts; minimal compaction with tracked plant/roller to seat the stone Keep clean—avoid mixing with fines; not a finished running surface without capping

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