Changes

Apparatus:  

Apparatus:  

*A large wide-mouthed jar - glass or clear plastic are both fine.

*A large wide-mouthed jar - glass or clear plastic are both fine,

*Tap water, and

*Tap water, and

*The aggregate to be tested.

*The aggregate to be tested.

Method:

Method:

# Collect approximately 5 cm of material in the jar (or at least two complete layers of 40 mm clear stone),  

# Collect approximately 5 cm of material in the jar (or at least two complete layers of 50 mm clear stone),  

# Add water to around 3/4 full,

# Add water to around 3/4 full,

# Secure cap and shake,  

# Secure cap and shake,  

# Leave for at least 30 minutes and until the water is clear - plan to run the test overnight when possible,

# Leave for at least 30 minutes and until the water is clear - plan to run the test overnight when possible,

# Examine the layer of sediment - if > 3 mm has been washed from 5 cm of product, reject the material,

# Examine the layer of sediment - if > 3 mm has been washed from 5 cm of product, the material should be rejected,

Note that the sediment may collect on top of, or at the bottom of the construction material.  

Note that the sediment may collect on top of, or at the bottom of the construction material.