Dobbsweir Yellow
Dobbsweir Yellow is a warm, golden gravel with mixed tones. It is partially rounded and has a beautiful, natural finish. The gravel can be mixed with Amber Gold for a more compacted finish, but it is also effective on its own.
Sizes: 3-6mm
Shape: Rounded to Irregular
Rock type: Flint Shingle
- Standard Bag (40 per pallet)
PSV – Polished Stone Value : 30-40
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 : 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: 18
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
Hardness: 7
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