Crushed Granite Path Turned to Mud: Cement Content, Moisture & Compaction Fixes

Question: 100mm crushed granite path, 3 stages: 2 with cement+water+compact, 3rd no cement but water+compact → mud, holes. Sprinkled granite, re-compacted, some clay-like spots. Should last course be compacted dry, then wet?

Answer: Mix Cement Dry, Lay in 1" Moist Layers; Resin-Bound DG Superior

• Cement ≤10%, mixed dry throughout granite. Granite moist, not wet, when compacted.
• If top layer has no cement, it shears off and turns muddy when wet.
• Mix cement+granite dry, lay 1" layers, moisten (not wet). If overwet, dry to moist before compacting.
• Overwetted layers may still harden but binding can fail.
• Resin-stabilized DG (e.g., TerraPave) retains hardness better than cement. Lime (5%) also an option—test small batch.

DG with cement is tricky, softens when wet. Good as mulch/soil amendment; resin-bound shows promise but not as permanent as concrete/asphalt.

—Mark Harshman | mahdrafting.com