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Slurry Seal is a cold mix blend of
high quality crushed aggregates, asphalt emulsion, water and mineral fillers,
mixed together according to a pre-determined mix design from a laboratory. It
is applied to an existing surface, such as surface treatment or pavements, that
are still in fair to good condition, as a means of a cost effective
preventative maintenance. It reduces deterioration by sealing, prevents further
oxidization, corrects raveling and provides or replaces a high degree of skid
resistance. Slurry Seal is applied with a spreader box, which is connected to
the slurry mixing unit. The box is the width of a single lane, allowing a
uniform spread of material in a single pass.

Crews ahead of the unit set up
traffic control, and sweep the surface before applying the slurry seal.
Operators of the units monitor the mixing and application. After a short curing
time traffic will be allowed to resume use of the freshly rehabilitated lane.
There are three types of Slurry seal commonly used, each using a different size
of aggregate;Type I- Slurry Seal (Fine Aggregate, 3,5mm max) Used for lower
traffic volumes and maximum crack penetrationRecommended application rates are
4.3-6.5 kg/ m 2Type II-Slurry Seal ( General Aggregate,6mm max) Most commonly used
slurry.

Good for
moderate to high volume roadsRecommended application rates are 6.5-10.8 kg/ m
2Type III- Slurry Seal ( Coarse Aggregate 12,7mm .Used for high volume roads
and heavier traffic.Recommended application rates are 9.8- 16.3 kg/ m 2 crack sealer  ,crack filling Tar Rejuvenation Crack Sealing
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http://www.stimtar.co.za/slurry_seals.html

Cell 
0846941581

Crack
Sealing

Sealing Cracking in pavements occurs
when a stress is built up in a surface layer that exceeds the tensile orshear
strength of the pavement causing a fissure or crack to open. Crack sealing and
crack filling are methods which can be used to repair these cracks in pavement
surfaces. The cause of the crack and itsactivity play a dominant role in
determining the success of crack sealing or filling operations.