Black
Black is a versatile angular granite aggregate that can be used on its own or mixed with other colors to create a variety of effects. It can be used to add texture and contrast to any surface, and its strong adhesion makes it ideal for use in resin-bound applications.
Sizes: 1-3mm, 2-5mm
Colour: Black
Shape: Angular
Rock type: Basalt
- Standard Bag (40 per Pallet)
PSV – Polished Stone Value: 58
The PSV of an aggregate is a measure of the resistance of an aggregate to polishing and the value is established by subjecting the aggregate to a standard polishing process and then testing the aggregate with a portable skid resistance tester. Aggregate that has a PSV over 60 is regarded as a High Skid Resistant Aggregate. The higher the PSV figure the greater resistance the aggregate has to polishing.
AAV – Aggregate Abrasion Value: 4.2
A known mass of aggregate chippings are set in resin in a small test panel and subject to abrasion on a grinding apparatus. The loss in weight of the aggregate after a specified time as a percentage of the original weight is the AAV.
AIV – Aggregate Impact Value: 10
The aggregate impact value is a strength value of an aggregate that is determined by performing the Aggregate Impact Test on a sample. The AIV is the percentage of fines produced from the aggregate after subjecting it to a standard amount of impact. Below 10 would be regarded as strong, above 35 would normally be regarded as too weak to be used in road surfaces.
ACV – Aggregate Crushing Value: 12
The aggregate crushing value is a value which indicates the ability of an aggregate to resist crushing. The lower the figure, the stronger the aggregate ie the greater its ability to resist crushing.
Hardness: 7
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