Fines in Crushed Sand: How to Control Stone Dust
Crushed sand carries stone dust, which is not the same as clay. Learn the ASTM C33 limit, the methylene blue test and how production controls fines.
0–6 mm
Sand
Double-Washed Sand
Double-washed sand
Sand washed twice, for uses where the cleanliness of the fine aggregate is decisive.
Made to order
Properties and technical role
In double-washed sand, a second washing stage reduces fines and clay beyond ordinary washed sand. The result is a cleaner fine aggregate with better cement paste bond.
This product is chosen where appearance or technical requirements are more sensitive to fines, as in facing elements and special concretes.
Applications
- Concrete facing elements
- Special concretes
- Quality plasterwork
Quality information
| Method | Test |
|---|---|
| ASTM C117 | Material finer than the 75 µm sieve |
| ASTM D2419 | Sand equivalent |
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0–6 mm
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Quality and technical information
The Sand Equivalent Test: Method and What the Result Means
Sand equivalent shows the ratio of sand to clay-like fines by a quick method. Learn the ASTM D2419 procedure, the calculation and the limits of interpreting it.
Production and processing
Aggregate Washing: Why Is Washed Material Better?
Washing separates clay, silt and stone dust from aggregate. Learn how this stage affects concrete, what equipment is common, and how water and sludge are managed.
Inquire about Double-washed sand
The grading on offer, stock and supply terms for this product are confirmed at the time of inquiry.