Permeable JFA (Joint Filling Aggregate) is used for filling joints on block paving,
creating a close and tight bond, adding stabilisation of the block paving.
- JFA (The key to a perfect finish)
- JFA ensures that the water can drain away freely through the laying course and sub-base
preventing the build-up of surface water - Non-staining
- Our JFA is an angular aggregate, double washed Granite
- Available in 25kg, bulk bag & loose
- Can be supplied as part of a mixed load
We supply the following grade of aggregate for this application; 1-4mm in size
- Our JFA is grey in colour
Coverage:
60mm Block Thickness = Approx. 4 sqm/25kg bag
80mm Block Thickness = Approx. 3 sqm/25kg bag
PERMEABLE JOINT FILLING AGGREGATE
| CATEGORY | Particle Size | Typ % retained |
|---|---|---|
| 4.00mm | 0.0 | |
| 2.00mm | 0.6 | |
| VERY COARSE SAND | 1.00mm | 2.2 |
| COARSE SAND | 500um | 12.0 |
| MEDIUM SAND | 250um | 59.0 |
| FINE SAND | 125um | 20.2 |
| FINE SAND | 150um | 14 |
| VERY FINE SAND | 63um | 18 |
| SILT | -63um | 0.6 |
| Clay | Clay | 2.2 |
| TYPICAL ANALYSIS | |
|---|---|
| Moisture Content | 10.5% w/w |
| Organic Content | 3.7% w/w |
| pH Value (H2O) | 7.2 |
| Sat. Hydraulic Conductivity | 243 mm/hr |
| Fibre Content (pp) | 0.45% w/w |
| GFN | n/a |
| D90 | 600 |
| D10 | 180 |
| D90/D10 | 3.3 |
| D eff | 260 |
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