Transcript Dust Control with Dustac

DUSTAC APPLICATION INSTRUCTIONS
A step-by-step look at application rates for construction areas
•
•
•
•
•
•
•
The Use of Polymers
The use of polymer based dust suppression is
recognised as the most effective form of dust control
A polymer is a large molecule composed of repeating
structural units
Although the term polymer is sometimes taken to refer to
plastics, it actually encompasses a large class of natural
and synthetic materials
Both synthetic and natural polymers are used in road
stabilisation
This applies to haul roads and other trafficable surfaces.
The benefits of these type of products include reduced
water application more stable road surfaces and a long
term sustainable management program.
Dustac is a natural polymer
DAY 1
First application – 2.5% Dustac solution.
• 250L of Dustac in a 10,000 litre water tank of water.
• Fill water truck to 75% level, pump in 250L of Dustac and
then top up water truck to full level.
• This will facilitate the mixing of the product and at the
same time limit foaming
• Spray evenly over all construction areas using center
spray head only
• The minimum application rate is 1litre of solution per m2
DAY 2
Second application – 1.25% Dustac solution.
• 125L of Dustac in a 10,000 litre water tank of water.
• Fill water truck to 75% capacity, pump in 125L of Dustac
and then top up water truck to full level.
• The minimum application rate is 1litre of solution per m2
• If the surface has been allowed dry out pre-water to match
up moisture horizons
• Spray evenly over all construction areas using center spray
head only.
DAY 3
Third application – 1.25% Dustac solution.
• 125L of Dustac in a 10,000 litre water tank of water.
• Fill water truck to 75% capacity, pump in 125L of Dustac
and then top up water truck to full level.
• The minimum application rate is 1litre of solution per m2
• If the surface has been allowed dry out pre-water to match
up moisture horizons
• Spray evenly over all construction areas using center spray
head only.
DAY 4
Spray water only when required.
•
•
•
•
•
Dustac treated areas will require less water than untreated areas to
control dust generation
Depending on road base water savings can be expected to be up to
80%
Overwatering will dilute Dustac concentrations at the top of the
road base profile.
Should the amount of water needed to settle dust increase
reapply Dustac as described in Day3 protocol above
After torrential rain it may be necessary to reapply the protocol
from Day 1 above