Specialty Concrete

(Click on thumbnail to enlarge)Specialty Concrete

Graded sand is used as a concrete additive to enhance the properties and performance of the concrete mix. Here’s how it contributes and why it’s used:

Function of Graded Sand in Concrete

1. IMPROVED PARTICLE PACKING

Graded sand consists of a range of particle sizes, allowing better packing density. This reduces void spaces in the concrete mix, leading to:

  • Higher strength
  • Reduced cement and water demand

2. WORKABILITY ENHANCEMENT

Well-graded sand ensures a more workable and cohesive concrete mix, making it easier to pour and finish.

3. DURABILITY AND STRENGTH

With better compaction and lower permeability, concrete made with graded sand is:

  • More durable
  • Less prone to shrinkage and cracking

4. REDUCTION OF BLEEDING AND SEGREGATION

A uniform gradation reduces the chances of water bleeding to the surface or aggregates settling out.

5. CONSISTENCY IN MIX DESIGN

Graded sand offers predictable performance, which is critical for producing consistent batches of concrete.

COMMON APPLICATIONS:

  • High-performance concrete
  • Precast concrete products
  • Structural concrete in buildings and bridges
  • Shotcrete and sprayed concrete
  • Grouting and repair mortars