SpECbuild S10 is designed for large area repairs
such as:
· Bridges
· Tunnels
· Retaining walls
· Dams
· Low rebound
· Rapid strength gain
· Low water absorption
· High resistance to carbon dioxide penetration
· Excellent bond to the concrete substrate
· Single component – ready to use
· No added caustic accelerators
· Contains no chloride admixtures
Preparation
It is essential that adequate preparation is carried
out prior to the application of SpECbuild S10. This
preparation should ensure the removal of all
grease, oil and loose material.
The area to be reinstated using SpECbuild S10
should be cut back to a depth of at least 10mm.
To avoid “feather edging”, it is advisable to neatly
delineate the repair boundary by saw cutting to a
depth of 10mm.
All corroded steel should be completely exposed
including the rear of the bar to enable thorough
cleaning. It is recommended that grit blasting
be used to clean the reinforcing steel and particular
attention should be paid to the rear of the bar to
ensure all corrosion products have been removed.
Once the reinforcing steel has been cleaned it
should be coated immediately with one coat of
SpECcoat Zn25.
Substrate Priming
Normally, it will only be necessary to pre-soak the
substrate with clean water for a period of at least
one hour, prior to the application of the repair
compound. Obviously all water should be drained
from the formwork prior to commencing with the
application of the repair material.
Application
Exposed steel reinforcing bars should be firmly
secured to avoid movement during the application
process as this will affect mortar compaction, build
and bond.
SpECbuild S10 should be emptied from the bags
directly into the hopper of the dry spray process
machine. The amount of water added should be
controlled by the nozzleman. too little water will
increase rebound and dust emission, too wet a
mix will slump.
If sagging occurs during application to vertical or
overhead surfaces, the SpECbuild S10 should be
completely removed and re-applied at a reduced
thickness on to the correctly reprimed substrate.
Finishing
SpECbuild S10 is finished by striking off with a
straight edge and closing with a steel float. Wooden
or plastic floats, or damp sponges may be used to
achieve the desired surface texture. The completed
surface should not be overworked.
Curing
SpECbuild S10 must be cured immediately
after finishing in accordance with good concrete
practices using wet hessian or polyethylene sheet.
SpECbuild S10 25kg bag
@ typically 12.5 litre
(0.0125m³) of mixed
product depending on
added water at nozzle
SpECcoat Zn25 1litre & 5litre tins
@ 7-8m²/litre
Contact us for more info.
