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Full Depth Reclamation
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Dust Control
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Snow and Ice Control
Full Depth Reclamation with Liquid
Calcium Chloride
Although still "new" by road builder
standards, the full-depth reclamation (FDR) technique for
rehabilitating asphalt and chip-and-seal roads is being embraced
across the country. Road officials have found this practice
of pulverizing an asphalt surface and blending it with the
underlying base delivers a long list of quality and cost advantages.
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The process is performed entirely
at the job site so the costs of removing, loading, hauling,
crushing, and sizing of the old pavement material are eliminated.
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Because the old pavement is
recycled, the need for disposal is eliminated.
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Fewer workers and less equipment
are required, resulting in lower costs and better traffic
flow.
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Base material costs are minimized
or eliminated and natural resources are conserved since
all existing materials are reused.
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Structural integrity of the
road base is increased to protect the overlay, thereby adding
years to road life and improving ride quality.
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Total pavement thickness can
be reduced, resulting in lower overlay material costs.

Not only does the FDR technique produce a superior
base for a new overlay, it dramatically reduces the time and
cost of construction compared with traditional methods. Some
studies suggest savings as high as 50% over other methods
of reconstruction while achieving the same, or better, finished
road quality and durability levels.
The secret to most successful FDR projects is
the addition of LIQUIDOW* liquid calcium chloride as a base
stabilization agent. It provides nine distinct advantages
that contribute toward faster project completion, top road
quality, and maximum savings.
Dust Control
For more than 75 years, dust control/surface stabilization
programs with LIQUIDOW* liquid calcium chloride have been turning
citizen complaints into "thank you" calls…and saving
townships big chunks of their road maintenance budgets.
A program with LIQUIDOW provides cleaner, safer, and
more comfortable driving conditions for residents who live on and
travel unpaved roads. It also reduces maintenance costs, typically
by 30% or more. Here's how.
Calcium chloride is an incredibly thirsty material
that constantly attracts moisture, then fiercely resists evaporation.
That's why it controls dust for months at a time, even in the hottest,
driest conditions. And that's the most obvious benefit seen by your
constituents. Their cars and homes are cleaner. Driver visibility
is maintained.
Yet, dust control is just the beginning of calcium
chloride's contribution to road quality and cost savings. That's
because those dust particles are critically important to road quality.
They help keep larger aggregates from being kicked off the road.
Untreated roads with moderate traffic will typically lose 300 tons
of aggregate per mile per year. And, as aggregate is lost, roads
quickly deteriorate. Rutting, washboarding, and potholes soon follow.
Paint chips and cracked windshields are common. People are unhappy
and the costs to renovate and maintain the road are high.
With LIQUIDOW, aggregate losses are typically reduced
75-80%. And the longer a program of calcium chloride treatment continues,
the better an unpaved road becomes…and the less attention
it requires.
Snow and Ice Control
The Dow Chemical Company has recently published a
comprehensive manual on the use of LIQUIDOW* calcium chloride for
prewetting salt for anti-icing and deicing, and when used alone
for liquid anti-icing.
As you know, dozens of local governments at every
level have adopted the use of wetted salt for deicing. They've documented
the superior performance that translates into faster and higher
quality service, lower chemical usage, and greatly reduced snowfighting
costs.
This manual provides all the details on this widely
popular technique, including the specifics on the three application
options.
More recently, the FHWA and dozens of states have
successfully tested the idea of anti-icing; spreading wetted salt
or straight liquid calcium chloride on pavements before snowfalls
to prevent bonding. In cases of light snow, these pretreatments
prevent hazardous conditions as all snow melts on contact. In cases
where snow persists, the pretreatment makes it far easier to reach
bare pavement conditions.
In all cases there is the potential to significantly
reduce the resources required to maintain safe travel in winter,
while at the same time increasing the level of service to the motoring
public. Anti-icing is proving to be "the ounce of prevention
that's worth a pound of cure." Dow's new manual provides detailed
information on this newest snowfighting technique as well. |