What is Coarse Sand, and Why is it Important for Concrete Production?

**Coarse sand** is a key material in concrete production that helps increase concrete strength.

**What is Coarse Sand?**

Coarse sand has larger grain sizes than fine sand, approximately 0.5–2mm.

Characteristics:

– Large grain size

– Coarse surface texture

– Good bonding with cement

**Why is Coarse Sand Suitable for Concrete Work?**

– Increases concrete strength

– Reduces concrete cracking

– Helps concrete have a stable structure

**Uses of Coarse Sand in Construction**

– **Concrete mixing:** For columns, beams, floors, foundations

– **Floor pouring:** Houses, parking lots, factory floors

– **Infrastructure:** Roads, bridges, large construction projects

**Standards**

– FM value

– Sand cleanliness

– Contamination level