13 mm Granite Stone Aggregate for Concrete and Decorative Use (Bulk Yard Sale) – Price Per m3
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- R 429.00
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- 13 Sep 2026
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Description
High-Performance Structural Support: Superior Compressive Strength, Heavy-Duty Durability
Reinforce your construction projects with our premium 13mm Granite Stone, available in bulk per cubic metre (m3). Granite is renowned for its exceptional hardness and density, making it a versatile coarse aggregate for both high-strength concrete mixes and refined decorative finishes. Whether you are casting thin structural slabs or creating a durable, aesthetically pleasing driveway, this crushed stone ensures maximum load-bearing capacity and a long-lasting finish.
Key Benefits:
- Unmatched Hardness: Naturally dense granite provides superior compressive strength, ideal for structural elements that must withstand consistent pressure.
- Excellent Binding: The angular, crushed shape of the stone ensures a strong mechanical bond with cement and sand, preventing internal shifting.
- Weather & Wear Resistance: Highly resistant to abrasion and environmental degradation, ensuring the longevity of outdoor surfaces.
Ideal For:
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Thin Slab Concrete: The 13mm size is ideal for concrete slabs and toppings where a finer aggregate is required than the standard 19mm stone.
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Pre-cast Products: Perfect for manufacturing concrete lintels, curbs, and paving blocks.
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Decorative Driveways & Paths: A popular choice for a neat, smaller-stone finish on garden walkways and high-end driveways.
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Drainage Layers: Effective for finer filtration in drainage systems and around sub-surface piping.
Technical Specifications
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Unit of Measure: Sold per Cubic Metre (m3).
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Stone Size: 13mm (Crushed).
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Material: Natural Granite.
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Weight Estimate: Approximately 1,500kg to 1,600kg per m3.
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SKU: 6009149131143.
What is in the box?
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Note: This is a bulk "Yard Sale" aggregate and is not packaged.
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Quantity: 1 Cubic Metre (m3) of loose 13mm Granite Stone.
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Form: Loose material.
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Collection/Delivery: Loaded via front-end loader directly onto your vehicle for in-store collection or delivered via bulk tip-truck for online orders.
Merchant Tips & Usage
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The Concrete Mix: For a strong concrete mix using 13mm stone, maintain a standard ratio of 1 part 42.5N Cement, 2 parts River Sand, and 3 parts 13mm Granite Stone.
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Decorative Coverage: To cover a 10m² decorative area at a depth of 50mm, you will need approximately 0.5m3 of stone.
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Pro-Tip: For driveways, ensure a well-compacted sub-base is prepared before spreading the granite to prevent the stone from sinking into the soil over time.
Frequently Asked Questions (FAQs)
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What is the difference between 13mm and 19mm stone? 13mm stone is smaller and provides a "smoother" finish, making it better for thinner concrete layers and decorative paths, whereas 19mm is the standard for heavy structural slabs.
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How much cement do I need for 1m3 of stone? For a standard structural mix, you will typically need 10 to 12 bags (50kg) of cement per cubic metre of aggregate.
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Will 1m3 fit on my 1-ton bakkie? No; 1m3 of granite stone weighs roughly 1.6 tons, which exceeds the carrying capacity of a standard 1-ton bakkie.
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Can I use this for a French drain? Yes, though 19mm is more common, 13mm works well for smaller residential drainage projects.
Important Delivery Information
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Bulk Tip-Truck Delivery: Material is tipped in a heap; manual spreading or leveling is the responsibility of the customer.
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Site Access: Please ensure your delivery site is accessible for a large truck and has firm ground for tipping.
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Non-Returnable: Bulk aggregates are non-returnable once they have been loaded or tipped on-site.