Product Data Sheet Safety Data Sheet Show all documents
Sika® Rugasol F

Sika® Rugasol F

CONCRETE SURFACE RETARDERS

Rugasol surface retarders have been specifically designed for the production of exposed aggregate finishes or for producing a mechanical key to construction joints, stop ends, or subsequent rendering applications.

Rugasol products will only delay the ultimate hardening and do not stop the setting of cement. When used correctly Rugasol will not stain concrete, even white concrete. Rugasol will not affect the bond of reinforcement to concrete even if accidental splashing occurs, provided it is thoroughly cleaned with clean water.

  • Sika® Rugasol F surface retarder is used to expose aggregate on Portland Cement based concrete surfaces.
  • Sika® Rugasol F provides an efficient, economical method of obtaining a rough bonding surface without the need for hacking, chipping or grit-blasting.
  • Sika® Rugasol F is also used to produce precast panels having a decorative architectural finish showing the colour and texture of natural aggregate. The aggregate remains whole and unbroken.
  • Sika® Rugasol F is painted directly on formwork for walls, ceilings, vertical construction joints or any similar formed concrete surface. Sika® Rugasol F dries on the formwork to a tough, but water-soluble film. Protect from rain. Forms may be coated before or after erection. Reinforcing still is placed as usual.
  • Sika® Rugasol F will retard the set of the cement paste by up to 6 mm (1/4 inch) depth, the depth depends upon the thickness of coating, the time elapsed before the retarder is removed, the cement content of the concrete and the quantity of water in the mix. The ambient temperature will also affect the depth of retardation.
Product Data Sheet Safety Data Sheet Show all documents

Usage

Gel-retarder for application to formwork to produce exposed aggregate work  

Advantages

  • Sika® Rugasol F surface retarder is used to expose aggregate on Portland Cement based concrete surfaces.
  • Sika® Rugasol F provides an efficient, economical method of obtaining a rough bonding surface without the need for hacking, chipping or grit-blasting.
  • Sika® Rugasol F is also used to produce precast panels having a decorative architectural finish showing the colour and texture of natural aggregate. The aggregate remains whole and unbroken.
  • Sika® Rugasol F is painted directly on formwork for walls, ceilings, vertical construction joints or any similar formed concrete surface. Sika® Rugasol F dries on the formwork to a tough, but water-soluble film. Protect from rain. Forms may be coated before or after erection. Reinforcing still is placed as usual.
  • Sika® Rugasol F will retard the set of the cement paste by up to 6 mm (1/4 inch) depth, the depth depends upon the thickness of coating, the time elapsed before the retarder is removed, the cement content of the concrete and the quantity of water in the mix. The ambient temperature will also affect the depth of retardation.

Packaging

20 kg/ pail

Colour

Brown paste

Product Details

Product Information

Composition

Polyhydroxy compound

Shelf life

12 months if stored properly in unopened, original packaging

Storage conditions

Dry, cool, shaded place

Density

~1.070-1.090 kg/ L (at 25°C)

 
Technical Information

Specific Advice

  • Field trials are recommended to ensure satisfactory result.
  • When using untreated wood or porous forms for the first time. we recommended a minimum of two coats of Sika® Rugasol F. This will impregnate the surface and aid in the uniform exposure of aggregates.
  • Form panels to be re-used may be scraped off and recoated with Sika® Rugasol F as soon as is required.

Application

Consumption

Consumption

~0.25 - 0.3 kg/m2
Application steps

APPLICATION

Sika® Rugasol F should be stirred before use and must not be diluted.
Sika® Rugasol F may be applied to any type of clean formwork. Apply a heavy coat with brush or roller, and allow to dry (normally 2 to 4 hours). No mould oils should be on the forms. Coated surfaces should be protected from strong sunlight.

Demolding
Exposed Aggregate:
For optimum results forms should be removed as soon as possible after the concrete is poured, normally not later than one day in warm weather and up to 2 days in cold weather. If the forms must remain in place in longer period then use two or even three coats of Rugasol F to ensure deep penetrations.
Cleaning Off:
Some of the soft cement paste will stick to the form when the shuttering is stripped; while still soft this can be removed easily from both the formwork and concrete by a light wire-brushing or with a high pressure water jet. Always clean off immediately after stripping the shutters. The concrete should be kept moist and cured as usual. It is advisable to undertake a small test in all cases prior to use, as cements and condition of use can change from site to site.

Cleaning of Tools

All equipment should be washed out after use with water.

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