DCP Global
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UsageCempatch S is a blend of dry powders, selected aggregates and fibres which when mixed with water produces a thixotropic mortar suitable for vertical and overhead application.
Repair of all types of
structural concrete where high strength and extremely low shrinkage properties
are required.
For the repair of vertical and overhead elements. As a repair mortar for all structural elements in buildings, water retaining structures, industrial plants, bridges, etc.Materials Supplied20kg polythene-lined paper sacks CoverageApproximately 11.5 liters/ 20 kg bag. About 1 m2 / 10 mm thickness/ 1 bag Cempatch S.
Cempatch
S can be applied in a single application for sections up to 50 mm thick in
overhead applications and 75 mm thick in vertical applications. Thickness
should not be less than 10 mm deep in all applications. Cempatch
S repair area should not exceed 2.5 m² in single application.
Storage/ Shelf LifeCempatch
S has a shelf life of 12 months from date of manufacture if stored at
temperatures between 2°C and 35°C. Standard
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Technical Information
The technical data are specified at 22 ° C. Application InformationSUBSTRATE PREPARATION All damaged and weak
concrete should be cut back to reach sound concrete and/or to a minimum depth
of at least 10 mm. Corroded
steel reinforcement should be grit blasted to remove all rust traces. In
case of significant loss in the steel reinforcement cross section, the steel
should be replaced. Remove all concrete form around exposed steel
reinforcements by 10 mm thickness. The perimeters of the repair area should be
saw cut to a minimum depth of 10 mm.
The prepared area should be cleaned thoroughly by brush and/or compressed air. PRIMING All
grit blasted steel reinforcements should be primed within 2 - 4 hours with one
or two coats of zinc rich epoxy coating Repcoat ZR. Areas
to be repaired with Cempatch S should be soaked with clean water before
applying the repair mortar. All excess water should be removed prior to
applying Cempatch S.
MIXING To ensure proper mixing, a
mechanically powered mixer or drill
fitted with suitable paddle should be used. 3.5 - 4.0
litre of clean water should be added to clean container.
The
powder is then added slowly to the water while mixing continuously
with low speed mixer/drill (400 - 600 rpm). Mixing time should be continued for
3 minutes until a uniform consistency is obtained. APPLICATION Cempatch
S can be applied by trowel or hand. The mixed
mortar should be applied using firm pressure to fully compact the mortar to
ensure good adhesion with the steel reinforcements and the substrate. Finishing and leveling should be carried out initially by wooden or plastic float. Final finishing should be carried out using steel float. CURING As Cempatch S is a cementitious based material, it should be cured in a similar method to concrete. Curing can be conducted by using Setseal A or by wet hessian sheets covered with polyethylene sheets. |
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