- 2081 Chaitra (new course) · 2 marks
Mud mortar versus cement mortar
Short answer
Mud mortar uses clay soil as binder, is very cheap, low strength, dries by evaporation and is easily eroded by rain. Cement mortar uses Portland cement, is high strength, sets by hydration, is durable and water-resistant, and is used for permanent, load-bearing works.
How is mud mortar different from cement mortar?
| Point | Mud mortar | Cement mortar |
|---|---|---|
| Binder | Clay soil | Cement |
| Composition | Mud, water (husk/straw sometimes) | Cement, sand, water (1:3 to 1:6) |
| Strength | Very low | High |
| Durability | Poor; washed out by rain | Good; resists weather |
| Setting | Dries by evaporation | Sets by hydration, quick |
| Water resistance | Not water resistant | Fairly impervious |
| Cost | Very cheap, locally available | Costly |
| Use | Temporary and rural low-cost buildings | Permanent, load-bearing and wet-place works |
✓ Answer checked by Claude Opus 5.5 (high effort)
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