Sand is one of the fundamental ingredients in concrete. Density is an important parameter for sand. For sand, density is determined by multiplying the relative density (specific gravity) of the sand times the density of water.

### Bulk Density of Sand^{}

The **bulk density or unit weight of sand** is the mass or weight of the sand that required to fill a container of a specified unit volume.

Bulk Density of sand = ^{Mass od sand}/_{volume}

**Key Features:**

- If the volume is unit then, Bulk Density= Mass.
- Unit in kg/m
^{3}or lb/ft^{3}. ^{}In this definition, the volume is that contain both the sand and the voids between sand particles.- The approximate bulk density of sand that is commonly used in normal-weight concrete is between
**1520-1680 kg/m**^{3}(95-105 lb/ft^{3})^{[1]} - Here, Standard test method for determining the bulk density of sand is given in ASTM C 29 (AASHTO T 19).
^{[2]}

#### References

- Aggregates in Concrete [Design and Control of Concrete Mixtures _ EB001]
- ASTM C29 / C29M - 17a Standard Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate