Concrete Repair

Cement Based Repair Products

Monneli Betofinish F

Single Component Polymer Modified Fairing Coat (3mm or less)

Uses
To produce a smooth fair faced surfaces prior to applying decorative coating
As a general re-profiling layer over large areas
For filling pinholes or porous surfaces prior to over coating
As a minor repair product for defected concrete elements
For cosmetic repair fairing coat after a major concrete repair is executed in association with any of Colmef cementitious concrete repair products
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Technical Information
Product Description
Advantages
  • Excellent bond to all concrete supports
  • Requires only on site addition of water
  • High impact resistance and excellent adhesion to concrete
  • Smooth, easily producing fair faced finish
  • After hardening it creates an impermeable layer, resistant against atmospheric gas, frost and thaw cycles
  • Resistant against salts, chloride and chemical attack
  • 2 cm layer of hardened product is resistant against CO2 diffusion in the same degree as an 80 cm layer of concrete
  • No chloride content
  • Fully compatible with other Colmef Repair Products
Packaging, Coverage / Consumption

BETOFINISH F is packed in 25 kg bags.

Yield: 17 liters / 25 kg bag.

Shelf Life & Storage

The product must be stored in dry and sheltered place and into the original well closed bag. In these conditions the product will have a shelf life of 12 months.

Technical Properties
Appearance

G

Density at 25°C

1.8 – 1.85 kg/L

VOC

3.5g/L

Workability time at 25°C

40 minutes

Adhesion to concrete (BS 1881)

> 1.5 N/mm²

Compressive Strength at 28 days (ASTM C579)

20 N/mm²

Flexural Strength at 28 days (ASTM C580)

7 N/mm²

Tensile Strength at 28 days (BS 6319 Part

> 1 N/mm²

Porosity (ASTM C 642)

5.7%

Coefficient of thermal expansion (ASTM C 531)

6 x 10-6 / °C

Rapid Chloride permeability (ASTM C102)

low

Drying Shrinkage at 28days (ASTM C 157-93)

< 400 microstrains

Application Information
Instructions for use

Mixing

To prepare the mortar, pour 7.50 liters of water into a clean container and add slowly the content of BETOFINISH F (25kg). Mix using spiral paddle in slow speed heavy duty drill for few minutes till a homogeneous lump free consistency mix is achieved. Always add powder to water and not the other way around.

Application

Apply BETOFINISH F manually with spatula or steel trowel with a maximum thickness of 3 mm per coat. The product can be applied in more than one layer. Leave the surface rough if the application of following layers is needed.

Only the last coat can be smoothed with sponge trowel few minutes after the application. If surface dries too fast during the smoothing, it can be dampened by water spraying to facilitate the trowel application. Care should be taken not to overwork the surface.

When high mechanical resistant thin plaster is required, BETOFINISH C must then be reinforced with a special fibers tissue.

Curing

Curing is not generally needed however under extreme conditions - high temperature and drying winds, BETOCURE AR shall be used as a curing compound.

Cleaning

BETOFINISH F should be removed from tools and equipment and mixers with clean water immediately after use. Cured material should be removed mechanically.

Recommendations

  • Protect the surface from rapid evaporation of water, variations of temperature increase or reduce the initial and final setting time of the product
  • Use cool water to keep the mixed mortar temperature below 30 ºC
  • Do not expose packing to the direct sun-rays.
  • In warm weather, store the material in cool place
Surface Preparation

The support must be perfectly cleaned, free from dust, inconsistent parts, traces of form stripping oils, efflorescence, rust etc.

Saturate the surface with water to eliminate possible water absorption at the moment of application.

Additional Information
Health & Safety

BETOFINISH F can be harmful to skin as it contains cement powders which may releases alkalis when mixed with water.

 

During application, wear appropriate protective clothing, goggles, gloves and respiratory equipment if necessary.

 

In case of contact with skin, rinse with water and again wash thoroughly with soap and water. In case of contact with eyes, rinse with plenty of water and seek medical advice accordingly.

 

If ingested, obtain medical attention immediately. Do not induce vomiting.

Important note

The information in this Technical Data Sheet is based on Colmef Monneli’s experience. Colmef Monneli does not accept any liability arising from the use of its products as it has no direct or continuous control over where or how its products are applied. All Colmef Monneli’s Data Sheets are updates on regular basis. It is the user’s responsibility to obtain the latest version.

additional materials
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Technical Properties Sheet
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