Kortech...working for safer roads

Solutions

Dust Control


Products
W 1.32 calcium chloride (cacl2)
MG-30 calcium chloride/ magnesium hydroxide

Applications
Calcium chloride is easily applied following the Kortech Calcium Chloride Application Protocol

Benefits
Increases safety through increased visibility on rural roads.
Dust particles (fines) are not blown into adjacent homes creating health complications in the human respiratory system.
Dust particles (fines) are not blown onto adjacent environmental areas, such as bodies of water.
Calcium chloride has both; an easy application process and also a low cost, making calcium chloride the most widely used dust control agent on North American rural roads.
Calcium chloride has proven to reduce gravel loss by up to 40%. Reducing re-gravelling costs help reduce the overall maintenance cost.
Treated road surfaces may be bladed, which will not result in substantial product loss.

Structural Stability
Calcium chloride provides a hardened road surface and a stronger base reducing maintenance costs and road surface problems.

Freeze Thaw Stability
Calcium chloride reduces frost heaving caused by the freeze thaw cycle. Deep enetration of calcium chloride can reduce spring and fall maintenance costs by reducing road surface and base maintenance work costs.

Environmental
Calcium Chloride is non-toxic and does not require any placarding during transportation. Tests conducted by the Department of Highways in Ontario show Calcium Chloride is non-toxic and does not require any placarding during transportation. Tests conducted by the Department of Highways in Ontario show Calcium chloride to be the least aggressive agent among dust palliatives.
Calcium chloride is not palatable to wildlife, keeping wildlife away from treated road surfaces.

Cost
The availability of naturally occurring Calcium Chloride Brines in Alberta has lowered the costs of calcium chloride brines Western Canada.
Utilization of Calcium Chloride lowers the road construction costs as the densities are attained more readily.
Maintenance costs are reduced dramatically on a season to season basis.

Quantity needed

Q: How much calcium chloride is needed to treat my roadway for dust control?
A: For dust control applications we recommend between 1.5 litres and 2.0 litres per square meter at a depth of 2 inches.

Step 1: find the surface area of the roadway (length x width)

Area of Roadway (length x width) Width of
Roadway
(meters)
5m 7m 10m
Length of
Roadway
(meters)
- - - -
100 m (0.1 km) - 500 m2 700 m2 1000 m2
200 m (0.2 km) - 1000 m2 1400 m2 2000 m2
500 m (0.5 km) - 2500 m2 3500 m2 5000 m2
1000 m (1 km) - 5000 m2 7000 m2 10 000 m2

Step 2: calculate the product needed (area x application rate)

Product
needed (area x
application
rate)
Area of
road
surface
(m2)
500 m2 2500 m2 10 000 m2
Application
rate (litres
per m2)
- - - -
1.5 litres per m2 - 750 litres 3750 Litres 15 000 Litres
1.7 litres per m2 - 850 Litres 4250 Litres 17 000 Litres
1.5 litres per m2 - 750 litres 3750 Litres 15 000 Litres
1.7 litres per m2 - 850 Litres 4250 Litres 17 000 Litres
2.0 litres per m2 - 1000 Litres 5000 Litres 20 000 Litres


FAQ

Q: Will I need to add additional aggregate to my roadway surface?

A: Fresh aggregate ensures that the proper mix of rock, clay and fines are present in the material mix. Overtime, gravel is separated though heavy vehicle traffic pounding,
environmental conditions (rain, snow, etc) and aggregate loss.

Fresh gravel is always valued, however, new aggregate is not necessary. If surface material can be bladed to a depth of 1.5– 2.0 inches fresh aggregate is not needed, but it does ensure the application will last longer and that the proper mix is established.

 

Base Stabilization


Products
MG-30 calcium chloride/ magnesium hydroxide

Applications
Calcium chloride is easily applied following the Kortech Calcium Chloride Application Protocol

Benefits
Calcium chloride base stabilization hardens the road surface to reduce rutting from heavy
traffic.
MG-30 binds the particles in the road surface to create a higher compaction level versus untreated surfaces.
MG-30 brings a clay component called magnesium hydroxide that is very effective in silty/sandy aggregates.
Reduces the need for regular blading.
Reduces potholes, washboard and soft spots in a road surface.
Does not harm surfacing of asphalt or pavement.

Freeze Thaw Stability:
Calcium chloride reduces frost heaving caused by the freeze thaw cycle. Deep penetration of calcium chloride can reduce spring and fall maintenance costs by reducing road surface and base maintenance work costs.
A Swedish study has found calcium chloride can reduce frost lenses, which cause frost heaves, by up to 60%.

FAQ

Q:What other costs are associated with a calcium chloride application?

A: there are application costs to consider in addition to the cost of the calcium chloride. The cost of trucking and application can be included in the purchase of calcium chloride, however, additional costs to application include: water truck costs, grader costs, and in some cases mixer/reclaimer costs. For the calcium chloride application it is recommended to have a water truck pre-wet the aggregate at a rate of 0.7—1.0 litres per meter square before we apply the calcium. Please refer to the recommended application procedures for full application instruction.

Area of Roadway (length x width) Width of
Roadway
(meters)
5m 7m 10m
Length of
Roadway
(meters)
- - - -
100 m (0.1 km) - 500 m2 700 m2 1000 m2
200 m (0.2 km) - 1000 m2 1400 m2 2000 m2
500 m (0.5 km) - 2500 m2 3500 m2 5000 m2
1000 m (1 km) - 5000 m2 7000 m2 10 000 m2


Product
needed (area x
application
rate)
Area of
road
surface
(m2)
500 m2 2500 m2 10 000 m2
Application
rate (litres
per m2)
Depth of
Treatment
- - -  
3.0 litres per m2 3.0 inches
(7 6 cm)
- 1500 litres 7500 litres 30 000 litres
3.0 litres per m2 3.0 inches
(7.6 cm)
deep
- 1500 litres 7500 litres 30 000 litres
6.0 litres per m2 6.0 inches
(15.2 cm)
deep
- 3000 litres 15 000 litres 60 000 litres
12.0 litres per m2 12.0 inches
(30.5 cm)
deep
- 6000 litres 30 000 litres 120 000 litres


Q:How long will it take to complete the base stabilization?

A: Base stabilization applications take varying amounts of time dependant on several factors:
Amount of roadway to complete
Application depth (3.0 inches—12.0 inches in depth)
Environmental conditions; especially extended periods of rain or sunshine.

 

Research Paper

 
Stabilizing unpaved roads with calcium chloride. Monlux, S

Transportation Research Record , no. 1819, Volume 2, pp. 52-56. 2003

The U.S. Department of Agriculture Forest Service has stabilized un-paved road surfacing materials with relatively high concentrations of calcium chloride salt. The percentage of calcium chloride is higher than that traditionally used for dust abatement or aggregate base
stabilization.

Up to 2% pure salt by weight of aggregate was mixed into the top 2 in. (50 mm) of both aggregate and native road surfaces. The results were monitored for 2
to 4 years. The stabilized road surfaces resisted raveling and washboarding for several seasons and significantly reduced road blading and aggregate loss.

As a result, calcium chloride stabilization may be a cost-effective treatment for roads with daily traffic volumes less than 200. Other benefits include reduced surface erosion and sedimentation; improved safety from reduced dust, raveling, and washboarding; and less frost penetration.

Encouraged by these results, the Forest Service is conducting additional evaluations to determine the costeffectiveness of surface stabilization with both magnesium
chloride and calcium chloride in different environments and with different aggregate materials.

 

Winter Sand/ Ice Control

Products
W 1.32 calcium chloride (cacl2)
W 1.32 Inhibited calcium chloride (CaCl2)

Applications
Calcium chloride is easily applied following the Kortech Calcium Chloride Application Protocol

Benefits
Calcium chloride reduces frost heaving caused by the freeze thaw cycle. Deep enetration of calcium chloride can reduce spring and fall maintenance costs by reducing road surface and base maintenance work costs.

Quantity needed

Q: How much calcium chloride is needed to treat my roadway for dust control?
A: For dust control applications we recommend between 1.5 litres and 2.0 litres per square meter at a depth of 2 inches.

Step 1: find the surface area of the roadway (length x width)

Area of Roadway (length x width) Width of
Roadway
(meters)
5m 7m 10m
Length of
Roadway
(meters)
- - - -
100 m (0.1 km) - 500 m2 700 m2 1000 m2
200 m (0.2 km) - 1000 m2 1400 m2 2000 m2
500 m (0.5 km) - 2500 m2 3500 m2 5000 m2
1000 m (1 km) - 5000 m2 7000 m2 10 000 m2

Step 2: calculate the product needed (area x application rate)

Product
needed (area x
application
rate)
Area of
road
surface
(m2)
500 m2 2500 m2 10 000 m2
Application
rate (litres
per m2)
- - - -
1.5 litres per m2 - 750 litres 3750 Litres 15 000 Litres
1.7 litres per m2 - 850 Litres 4250 Litres 17 000 Litres
1.5 litres per m2 - 750 litres 3750 Litres 15 000 Litres
1.7 litres per m2 - 850 Litres 4250 Litres 17 000 Litres
2.0 litres per m2 - 1000 Litres 5000 Litres 20 000 Litres

Cost
The availability of naturally occurring Calcium Chloride Brines in Alberta has lowered the costs of calcium chloride brines Western Canada.
Utilization of Calcium Chloride lowers the road construction costs as the densities are attained more readily.
Maintenance costs are reduced dramatically on a season to season basis.

FAQ

Q: Will I need to add additional aggregate to my roadway surface?

A: Fresh aggregate ensures that the proper mix of rock, clay and fines are present in the material mix. Overtime, gravel is separated though heavy vehicle traffic pounding,
environmental conditions (rain, snow, etc) and aggregate loss.

Fresh gravel is always valued, however, new aggregate is not necessary. If surface material can be bladed to a depth of 1.5– 2.0 inches fresh aggregate is not needed, but it does ensure the application will last longer and that the proper mix is established.