Concrete is at the core of construction, and some of the most important properties of a particular concrete mix (including quality, setting time, etc.) can come from the type of sand used. At Metsand, one of the most trusted building material suppliers, we know that when builders and contractors better understand sand types, they will produce stronger and longer-lasting structures.

M Sand – Precision and Faster Setting

Manufactured sand (M Sand) comprises hard stones that are crushed to obtain fine particles. M Sand has an angular texture and bonds well with cement paste, which thereby permits and achieves faster hydration and initial setting of the concrete. M Sand also helps to reduce voids, which helps in achieving stronger final structures.

P Sand – Smooth Finish, Controlled Setting

Plastering sand (P Sand) is more finely graded than M Sand and is utilised for plastering and finishing works. It will not reduce setting time significantly, but it will provide a smoother finish and more even application. It is the fine grade of sand that helps control the setting process and eliminates cracking on walls and plastered surfaces.

Rock dust: slower reaction, greater durability

Rock dust (quarry dust) has a powdery texture and a higher silt content than M Sand. It will slow down the setting of a concrete mix due to the inclusion of the dusty powder; however, this is beneficial in a hot climate where the cured concrete requires strength gain time. Blending in the correct amount of rock dust will also improve durability.

Blue Metal Aggregates – Supporting Role in Setting

Although it is not sand, blue metal will provide the required 20 mm and 6 mm aggregates for concrete mix design. The size of aggregate particles influences the water-cement ratio and unset workability, which in turn indirectly influence the setting time for concrete. A balance of water and M Sand in a well-graded mix of blue metal will allow for strong and long-term concrete strength due to a balance of blending for hydration.

Conclusion

The type of sand you choose will affect how your concrete sets, cures and performs over time. M Sand will promote faster set times, P Sand provides a smooth finish, and rock dust gives you longer hydration benefits. At Metsand, your trustworthy building material supplier, we guarantee consistent quality in every grain of sand or stone. For multipurpose and ideal building materials, whether it is M Sand, P Sand, rock dust or blue metal, contact Metsand, your preferred  building material supplier, today for reliable, high-quality building materials to provide strength and durability to your builds.