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Prerepar E 

Fast setting modified mortar for application in rehabilitation and restoration

Description

PREREPAR E is a fast setting, one-component, powder mortar, based on Portland cement, sand aggregates of analyzed grain size, admixtures, polymers and fibers, suitable for concrete restoration and rehabilitation as well as for fixing of anchors, hooks, etc.

Technical Data

• Type: Fast setting enhanced cement mortar.
• Aspect: Powder.
• Colour: Grey.
• pH: 12.
• Density: 2.0 kg/dm³.
• Grain size: < 1 mm.
• Application temperature: 5-35 ºC.
• Workability time at 20 ºC: 15-25 min.
• Mechanical strength:
  • Compressive str. at 24 h: >100 kg/cm².
  • Compressive str. at 28 d: > 350 kg/cm².
  • Flexural str. at 28 d: > 70 kg/cm².
• Bond stre:ngth to concrete:
  • At 28 days: > 14 kg/cm².
• Thickness of application: 3 - 20 mm.

Features

• Thin texture and high workability.
  
• High initial resistances.
  
• Excellent adherence.
  
• Non-shrinkage.
  
• Weather-resistant.
  
• Waterproof, vapor permeable.
  
• Fast setting.

Application procedure

Substrate preparation: The application substrate (concrete, mortar, stone, brick, etc.) must be resistant, absorptive and clean. Loose particles such as oxides, grease, laitance, dust and other polluters must be eliminated. Prior to application, wet the substrate well to saturate the pours. Use compressed air, a sponge, etc. to eliminate the water in excess.

Mortar preparation: Pour the water in a suitable recipient and gradually add the powder product, mixing at the same time to obtain a homogeneous mix, free from lumps. The proportion of the mix is approximately 4.25 liters of water to a 25 kg bag of PREREPAR E.
Neither cement, nor additional sand aggregates and grave can be added to PREREPAR E. For vertical application, ceilings or vaults, a dry consistency mix should be prepared to avoid splitting off.

PREREPAR E can be applied either by a spatula or by a trowel. If high thickness is required, it should be applied coat by coat (max. 2cm thickness) waiting for each coat to harden enough before continuing with the next one.

Repaired edges and the corners are recommended to be smoothed by a wooden trowel or hard foam before the product begins to harden. Due to its fast setting, the product workability time is 15-25 minutes, varying according to the amount of mixing water and the environment humidity.

Curing: The area should be protected against the extremely fast evaporation using water spraying, wet burlaps or some curing liquid.

Tools cleaning:Tools and application equipments are washed with water immediately after their use. If the product hardens, it can be removed by mechanical means only.

Recommended for

• Concrete restoration.
• Damaged edges and corners repair.
  
• Performance of bull-noses.
  
• Fast concrete surface repair before coating.
  
• Prefabricated elements repair.
  
• Concrete coke work repair.
  
• Repair of damage in concrete caused by impacts.
  
• Anchors, such as hooks, braces, etc.
  
• Architectural concrete.

Special precautions

This product contains cement. Avoid contact with the eyes and skin. Avoid inhaling the powder. Use rubber gloves and goggles. Keep out of children‘s reach.

Do not apply the product at temperatures lower than 5ºC.

Empty packaging must be disposed of according to the local legal environmental regulations.

Consumption

The product yields 2 kg /m²/ mm thickness.

Packaging

PREREPAR E is supplied in 25 kg bags.

Storage

PREREPAR E must be stored in a dry place, protected from frost and direct sunlight, in its original unopened packaging. In adequate conditions, its shelf life is 12 months after the date of manufacturing.

Activities where this product appears:

• 03. Repair and Rehabilitation Systems

The information and technical data in this «Product Guide» are indicative and are subject to change without notice. Are based on ourexperience and knowledge and customary uses and applications of the product. The specified values may suffer some variationsdepending on: conditions of entry into work, manufacturing tolerances, testing, etc. For this reason, our warranty is limited to thequality delivered.For further expansion or consult our Technical Department.
This information supersedes all previously issued.