Construction aggregates make up nearly 70–80% of concrete volume. High-quality aggregates improve the strength, durability, and lifespan of your building, while poor-quality materials can lead to cracks, weak concrete, and higher maintenance costs.

Good quality aggregates should:

• Be clean and free from dust, clay, and organic impurities.
• Have angular edges for better bonding.
• Be uniformly graded.
• Be hard and durable.
• Produce minimal fines during handling.

The Water Absorption Test helps determine the cleanliness of aggregates.

If the water remains clear after soaking the aggregates, it indicates clean material. If the water turns muddy or cloudy, it suggests excessive dust, clay, or impurities that can reduce concrete strength.

Dust and clay prevent proper bonding between cement and aggregates, increase water demand, reduce concrete strength, and may cause cracks over time.

Yes. Poor-quality aggregates can reduce compressive strength, weaken bonding, increase shrinkage, and significantly reduce the durability and life of the structure.

Some suppliers mix low-cost materials such as slag, stone dust, or excessive fines to increase weight and reduce production costs. While this may lower the selling price, it compromises the strength and quality of concrete.

• 6mm – Paver blocks, precast products, tile bedding.
• 12mm – RCC slabs, beams, columns, residential construction.
• 20mm – Foundations, RCC works, roads, commercial buildings.
• 40mm – Heavy foundations, retaining walls, mass concreting.

M Sand is manufactured for concrete and RCC applications, offering superior strength and consistency.

P Sand is finer and is primarily used for plastering and masonry work, providing a smooth finish.

Yes. Buying directly from RKB Mines ensures:

• Consistent quality
• Competitive pricing
• Reliable supply
• Transparent sourcing
• Timely delivery