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webercem five star repair concrete CP

Saint-Gobain Weber

Shrinkage-compensated, high strength, low-resistivity, flowing repair concrete for use in conjunction with cathodic protection systems.

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Description

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.

Uses:

  • 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.

Benefits:

  • 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.

Curing:

  • 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.

General information
Specification data
Product Reference

webercem five star repair concrete CP

Standard product features

Technical characteristics:

  • Tensile strength to BS 6319-7 (7 days): > 4 N/mm².

- Compressive strength BS 6319-2:

  • One day: 27 N/mm².
  • Three days: 37 N/mm².
  • Seven days: 55 N/mm².

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