A preblended cementitious repair concrete which fully complies with the Highways Agency Specification for Highway Works Class 29F high-strength flowing concrete. Contains non-reactive aggregates and a low soluble-alkali cement content suitable for use where cathodic protection will subsequently be used. Contains RHPC and GGBS to clause 1702, 5 mm nonreactive carboniferous limestone to clause 1704, super-plasticiser and shrinkage compensating agents. Does not contain microsilica.
- Repair of concrete to bridge structures to HA specification.
- In conjuction with electro-chemical cathodic protection systems.
- Replacement of defective concrete to beams and crossheads.
- Repair of carparks and buildings.
- Coastal structural repairs to jetties and piers.
- Repairing concrete columns, beams, walls and soffits.
- Excellent electrical resistivity for cathodic protection systems.
- Rapid strength development thus reducing repair possession times.
- Dimensionally stable, forms an integral bond to existing concrete and restores structural integrity with proven durability.
- Variable application thickness providing flexibility of use.
- Total chloride content does not exceed 0·1% of the mass of cement.
- Total water-soluble sulphate content of concrete, does not exceed 4%, complies with HA specification.
- Free-flowing, allowing use in areas of congested reinforcement.
- Immediately after finishing, the exposed surfaces of the concrete shall be cured with wet hessian, polythene or frost blankets for at least 48 hours to prevent rapid loss of water.
- Formwork shall not be removed until the repair can support dead and imposed loads, the concrete should then be cured with a spray-on curing membrane, Weber.tec ritecure, for a minimum of 14 days.