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Stabilisation of Unsealed Roads
Unsealed road pavements provide quite a different challenge
to the road manager to sealed roads. With hundreds or even thousands of
kilometres of unsealed roads within each of Australia's rural
municipalities,
 maintenance
can be a time consuming and costly exercise.
Insitu Stabilisation can be a very effective and efficient
part of the solution to the maintenance problems presented by unsealed
roads. The modification improvement and strength gain to existing pavement
materials from this process means that it can provide a reduction in the
level of maintenance required and even result in a more cost effective
alternative to expensive gravel overlays.
The benefits to road managers of using
lime stabilisation on unsealed roads as opposed
to re-sheeting with granular material include:
-
 Saving on
natural resources by re-using the existing materials. By increasing the
strength of the pavement due to the use of a binder, the life of the
pavement is increased resulting in a reduction in the need for maintenance
grading. If, after a time pot holing occurs, the affected area can be
tyned, shaped and recompacted, achieving some "re-activation" of the
binder.
-
Reduction in dust and lost granular pavement material, due
to the presence of the binder resulting in a major decrease of 'blow away'
of the pavement.
-
Decrease in construction traffic due to the elimination of
the use of tip trucks needed for carting gravel.
-
 High production rates, with up to 10,000m2 able
to be completed in a day. This equates to two kilometres per day of a
typical five metre width pavement.
-
Future upgrading options. If the road is to be upgraded and
sealed at a later date, the stabilised pavement makes a suitable sub-base
for an overlay, decreasing the thickness of the overlay required. In many
cases, it can even be regarded as a suitable base and be sealed directly.
For more information
Contact Us.
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