Manufactured Sand Gain More Competitive Edges than Natural Sand

Manufactured sand boasts core advantages over natural sand in sustainable resource supply, controllable performance, as well as superior economic and environmental benefits. Against the backdrop of dwindling natural sand resources, products from sand making machine have made manufactured sand the mainstream choice in the construction industry.

Natural sand is extracted mainly from river channels. Long-term over-excavation has damaged riverbeds and disrupted ecological balance. Many regions have imposed mining bans or restrictions, resulting in tight supply and soaring prices. By contrast, manufactured sand is produced from a wide range of raw materials including mine rocks, construction waste and tailings via manufactured sand production line. It enables the recycling of solid wastes, which not only eases the shortage of aggregates but also reduces environmental pollution, fully aligning with the development trend of green construction supported by aggregate shaping and sand making plant.

● Controllable gradation and fineness modulus

The particle size and fineness of manufactured sand can be precisely regulated via manufactured sand production line processes to meet the requirements of concrete of various strength grades such as C30 and C60. The gradation of natural sand, however, is naturally formed and hardly adjustable, unlike the output of sand making plant.

● Uniform material properties

Raw materials processed by sand making machine can be manually screened to eliminate complex mineral compositions and impurities commonly found in natural sand. This guarantees stable performance of concrete, making manufactured sand from manufactured sand production line ideal for projects with stringent requirements on material uniformity.

Gradation Curve of Ninon Sand Making Machine

Manufactured sand produced by aggregate shaping and sand making plant features angular particles with rough surfaces, which form a tighter bond with cement paste. It greatly enhances the mechanical interlocking force between aggregates and cement paste, thus boosting the compressive strength and overall durability of concrete made with sand production line output. Tests prove that with proper mix proportions, concrete made with manufactured sand from sand making plant delivers higher 28-day compressive strength than natural sand concrete.

Sand samples produced by Ninon aggregate shaping and sand making plant

Rock powder (particle size below 0.075 mm, distinct from clay) contained in manufactured sand from sand making machine does not participate in hydration reactions. It can fill internal voids inside concrete to improve compactness, impermeability and freeze-thaw resistance. When the stone powder content is controlled within 10%~15% by manufactured sand production line, it exerts a positive effect on concrete performance.

Ninon Sand Making Machines    

Despite higher upfront investment in aggregate shaping and sand making plant, manufactured sand features low raw material costs and a short transportation radius. On-site material collection (e.g., recycling construction waste via sand production line) is also feasible. Its overall price is generally lower than that of natural sand, which can effectively cut long-term engineering costs thanks to the efficiency of sand making plant.