Precast Sand
Precast sand is the fine aggregate used in precast concrete elements, ready-mix products and exposed concrete applications to achieve surface quality and strength. In these products, the grain size distribution, clay content and colour uniformity determine both the final surface and the mechanical strength. High-SiO₂, low-clay silica sand with a uniform colour delivers a smooth surface and a consistent appearance in precast elements.
How to Choose Precast Sand
The properties that define precast sand are clear. Controlled grain size distribution directly affects the workability of the concrete mix and the surface quality; an even gradation gives a void-free, smooth surface. A low clay content improves bonding with the cement and increases the final compressive strength. A uniform colour ensures a consistent appearance, particularly in unpainted exposed concrete elements. High grain hardness raises the abrasion resistance of the surface.
Recommended Fractions for Precast
Fine and medium fractions with a controlled gradation are used in precast and exposed concrete applications. We can determine the suitable fraction together, based on your production process and the desired surface quality.
About Precast Sand
Why is controlled sand used in precast concrete?
A controlled grain size distribution improves the workability of the concrete and the surface quality; an even gradation delivers a smooth surface.
Does the colour of the sand matter in exposed concrete?
Yes. In unpainted exposed concrete elements, uniform-colour sand ensures a consistent appearance from batch to batch.
Why is a low clay content important in precast?
A low clay content improves the sand's bond with the cement and increases the final compressive strength of the concrete.
Can precast sand be supplied in large tonnages?
Yes. It can be supplied in bulk or big-bag according to your requirements.
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