File Number: 02901014A
Dustset 2020 Concentrate
Road Trials
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File Number: 02900927A
Comparison of diluted 2020 concentrate with water on rural light traffic road surface
Graded road with no prior water or dust suppressant treatment.
Approximately 6 metres treated with single application of Dustset 2020 concentrate diluted 1/1000 on left and water alone on right
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File Number: 02900927A
Profile cut to observe depth penetration of water and product
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File Number: 02900927A
Road Surface
10 mm
Penetration level
Base of cut
Water Test
10mm penetration , 5 minutes after application
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File Number: 02900927A
Road Surface
20mm
Penetration level
Base of cut
Diluted 2020 Concentrate Test
20mm penetration, 5 minutes after application
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File Number: 02900927A
Trial Newstan – Grauches Dam Road
2 OCT – Loading dose
3 OCT – AM & PM loading dose
4‐6 OCT – no treatment
Road treatment: 7 OCT – loading dose
9‐11 OCT – maintenance dose 12‐14 OCT – no treatment
15 OCT ‐ penetration profile photos
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File Number: 02900927A
Water versus 2020 Concentrate on treated test road
Dry road – bottom of photo
Water – middle of photo. Profile dug 5min after application
2020 concentrate 1/1000 – top of photo. Profile dug 5 min after application
Note: All measurements taken with ruler pictured in photo
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File Number: 02900927A
Dry treated test road
Shows some evidence of consolidation with the top layer clumping as seen in the photos. Note: there was no treatment with product for 3 days, so this indicates a residual effect.
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File Number: 02900927A
Road Surface
20mm
Penetration level
Base of cut
Water on treated test road
20mm penetration, 5minutes after application
2 litres water delivered (by watering can) onto dry road surface over 5 metres. Again showed evidence of residue and consolidation of the fine dust particles
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File Number: 02900927A
Road Surface
30mm
Penetration level
Base of cut
2020 Concentrate diluted
30mm penetration, 5 minutes after application (full depth of profile cut)
2 litres 2020 diluted 1/1000 in water delivered (by watering can) onto dry road surface over 5 metres. Again showed evidence of residue and
consolidation of the fine dust particles. The depth penetration was greater which is consistent with 1980’s data on original product.
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File Number: 02900927A
Consolidating
Smaller particles clumping into larger mass
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File Number: 02900927A
Consolidating
When squeezed in hand, Dustset treated particles seem pliable, can be moulded into different shapes, this holds the surface together and helps consolidation Confidential Information
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File Number: 02900927A
Residual product Top Left – road treated with water only
Top Right – road treated with Dustset 2020 1/1000 dilution (No fine particles on rock surfaces due product surface tension reduction ‐ rocks appear cleaner)
Bottom ‐ When water applied to dry road, there was some evidence of residual product shown by the bubbles around the rocks (this photo from Newstan).
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File Number: 02900927A
Conclusion
When Dustset 2020 concentrate is applied consistently, firstly with loading dose and then maintenance dosing, improvement in not only dust control but also consolidation of the road surface will be shown with greater penetration the longer the continual use of product.
Site conditions should be taken into consideration when calculating dosage amount. Possible increase dose (to loading dose) with periods of prolonged high wind or hot conditions; or if there has been extended periods where the product is not used continually.
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