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Micro-surfacing
A paving system of
polymer modified cold mix asphalt. Like
the former slurry seal, micro-surfacing
is a high density mixture of emulsified
asphalt, water, mineral powder etc. It is
used for various road maintenance and reparation
on wide pavement of roads & airports
While conventional
slurry seal is applied as a means prolonging
road service life in cities & countries
worldwide, micro-surfacing is becoming more
popular for its outstanding performance.
History of Micro-surfacing
Micro-surfacing
originated from Germany in 60s-70s.German
scientists tried on conventional slurry
seal, increasing its depth to see if they
can fill the tracks without damaging the
high-cost expressway.
The scientists picked asphalt & its
mix, adding polymer and emulsion, spread
on deep tracks. This resulted in the forming
of micro-surfacing.
Micro-surfacing was introduced to America
in 1980.Now it is regarded as the most economical
way to deal with tracks and various road
surfaces. Micro-surfacing is now wide applied
in Europe, America and Australia, and is
being promoted in many other countries.
How to Apply Micro-surfacing？
Micro-surfacing is used to maintain road
surface with special machine. This kind
of machine continuously loads materials,
which are calibrated precisely inside the
machine, then thoroughly mixed and spread
on the road.
When the machine goes ahead, the mix is
constantly sent to a spreader box with certain
width, so it can be spread on the whole
lane. Besides, the box has a special design
ensuring more mix in more rougher tracks.
A scraper will then strike off the surface.
Newly treated pavement displays a puce
colour, whilst it turns to jet black afterwards.
Normally the roads can open to traffic in
one hour. This treatment will make fully
use of materials and reduce traverse joints.
Usage of Micro-surfacing
Using different mix, technology and equipment,
micro-surfacing can be applied successfully
as below:
1．On high-speed traffic roads the application
of 3/8 inch（9.5㎜）thickness will enhances
brake functions, colour contrast, pavement
life of national road and expressway. Normally
the roads can open to traffic within 1 hour
of application. Modern micro-surfacing machine
can continuously spread 500 tons everyday,
without traffic disruption. That is 6.6
miles(10.6 km) road pavement.
2．On airport runways thick micro-surfacing
is employed to solidify the surface, avoiding
the threat of gravelstones.
3．Thin-layer micro-surfacing, can quickly
resume urban arterials and heavy traffic
roads, without restriction on traffic flow
and other loss.
4．Micro-surfacing also solve water-skidding
problem of roads & airport runways in
rainy days. The treated surfaces make safe
driving even in rain.
5．Micro-surfacing of 3/8 inch（9.5㎜）or even
thinner can be applied to most road surface.
Each ton of micro-surfacing material can
cover a larger area so that significant
economic efficiency is achieved.
6．Road surface treated by micro-surfacing
resists ruts in summer and resists chap
in winter.
7．Micro-surfacing is suitable for asphalt
and cement(usually concrete) surface, especially
bridge deck which can bear little weight
increase.
8．Micro-surfacing is used as horizontal
strickle staff.
9．Micro-surfacing is also suitable for
areas of greatly diversified weather. It
can lessen blockades in adverse weather,
enhancing road service time.
10．Micro-surfacing adapts most to nighttime
construction on heavy traffic roads, expressways,
airport runways.
11．Micro-surfacing effectively saves energy
under normal temperatures. In addition,
it is environmentally friendly. The service
life of micro-surfacing is commonly above
7 years.
12．When pavements is stable without surface
deformation, micro-surfacing can fill ruts
of 1-1.5 inch（38㎜）,not having to polish
in advance.
Coloured
Micro-surfacing
Usage of Micro-surfacing
Using different mix, technology and equipment,
micro-surfacing can be applied successfully
as below:
1．On high-speed traffic roads the application
of 3/8 inch（9.5㎜）thickness will enhances
brake functions, colour contrast, pavement
life of national road and expressway. Normally
the roads can open to traffic within 1 hour
of application. Modern micro-surfacing machine
can continuously spread 500 tons everyday,
without traffic disruption. That is 6.6
miles(10.6 km) road pavement.
2．On airport runways thick micro-surfacing
is employed to solidify the surface, avoiding
the threat of gravelstones.
3．Thin-layer micro-surfacing, can quickly
resume urban arterials and heavy traffic
roads, without restriction on traffic flow
and other loss.
4．Micro-surfacing also solve water-skidding
problem of roads & airport runways in
rainy days. The treated surfaces make safe
driving even in rain.
5．Micro-surfacing of 3/8 inch（9.5㎜）or even
thinner can be applied to most road surface.
Each ton of micro-surfacing material can
cover a larger area so that significant
economic efficiency is achieved.
6．Road surface treated by micro-surfacing
resists ruts in summer and resists chap
in winter.
7．Micro-surfacing is suitable for asphalt
and cement(usually concrete) surface, especially
bridge deck which can bear little weight
increase.
8．Micro-surfacing is used as horizontal
strickle staff.
9．Micro-surfacing is also suitable for
areas of greatly diversified weather. It
can lessen blockades in adverse weather,
enhancing road service time.
10．Micro-surfacing adapts most to nighttime
construction on heavy traffic roads, expressways,
airport runways.
11．Micro-surfacing effectively saves energy
under normal temperatures. In addition,
it is environmentally friendly. The service
life of micro-surfacing is commonly above
7 years.
12．When pavements is stable without surface
deformation, micro-surfacing can fill ruts
of 1-1.5 inch（38㎜）,not having to polish
in advance.
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