Sikafloor®-297 CF

• Meets the requirements of CFIA and USDA for use in food plants.

12 months in original unopened packaging.

Store dry between 5 °C and 32 °C (41 °F and 89 °F)

< 25 g/L

A:B = 2:1 by volume

Condition product at temperatures between 18 °C to 30 °C (65 °F to 86 °F) before using.

Minimum: 10 °C (50 °F)                  Maximum: 30 °C (85 °F)

Mixing and application attempted at material, ambient and/or substrate temperature conditions less than 18 °C (65 °F) will result in a decrease in product workability and slower cure rates.

Maximum 85 % (during application and curing)

Substrate must be at least 3 ˚C (5 ˚F) above the Dew Point to reduce the risk of condensation, which may lead to adhesion failure or “blushing” on the floor finish. Be aware that the substrate temperature may be lower than the ambient temperature.

Minimum: 10 °C (50 °F)                 Maximum: 30 °C (85 °F)

Do not apply while ambient and substrate temperatures are rising, as pinholes may occur. Ensure there is no vapour drive at the time of application.

Moisture content of concrete substrate must be ≤ 4 % by mass (pbw – part by weight) as measured with a Tramex®CME / CMExpert type concrete moisture meter on mechanically prepared surface.

Material Temperature                    Time

23 °C (73 °F)                                      ~40 minutes

Ambient & Substrate                   Tack Free           Full Cure

Temperature

 23 °C (73 °F)                                    ~5 hours               ~5 days

Curing times will vary according to ambient air and substrate temperatures and relative humidity.

Freshly applied material should be protected from dampness, condensation, and water for at least 48 hours.

Mechanical, chemical, and physical properties will be fully achieved at full cure.

Crack fill:  ~28 m/L (~350 ft/US gal.) - 3mm (1/8 in) wide X 10 mm (3/8 in) deep

Corner fillet:  ~3.0 m/L (~38 ft/US gal) - 25mm (1 in) radius fillet - floor to wall

Note: Actual coverage rates and material consumption will depend upon crack width, porosity, and profile of substrates.  Test sections are recommended to establish correct coverage.

SUBSTRATE PREPARATION

The concrete surface must be clean and sound. Remove any dust, laitance, grease, oil, dirt, curing agents, impregnations, wax, foreign matter, coatings, and detritus from the surface by appropriate mechanical means such as shot blasting, grinding or other mechanical means to achieve an open surface profile equivalent to ICRI / CSP 3 – 4 similar in texture to fine sandpaper.  The compressive strength of the concrete substrate should be at least 25 MPa (3,625 psi) at 28 days and at least 1.5 MPa (218 psi) in tension at the time of application of Sikafloor®-297 CF.

Mix Ratio: A:B 2:1 by volume.   Do not hand mix Sikafloor®-297 CF materials. Mechanically mix only.

Pre-mix each component separately. Empty Component B (Hardener) in the correct mix ratio to Component A (Resin). Mix the combined components for at least three (3) minutes, using a low-speed drill (300 - 450 rpm) to minimize entrapping air. Use an Exomixer® or Jiffy type mixing paddle (recommended model) suited to the volume of the mixing container. During the mixing operation, scrape down the sides and bottom of the container with a flat or straight edge trowel at least once, to ensure complete mixing. When completely mixed, Sikafloor®-297 CF should be uniform in colour and consistency. Mix only that quantity which can be used within its pot life.

Extended Mortar: Where additional filler is required to produce a patching or repair mortar, oven dried silica sand may be added at a maximum ratio of 3 parts by weight of oven dried silica sand to 1-part mixed neat resin until the desired consistency is achieved. Important: Avoid adding excess silica sand as material will become too dry to provide adequate adhesion.

Cracks and Joints:  Spread Sikafloor®-297 CF using an appropriate spatula or trowel to force material into voids and finish by smoothing it flush with the adjoining surfaces.

Corner Fillet:  Apply a bead of Sikafloor®-297 CF material at the floor to wall interface.  Using a rounded or flat cove tool, force the bead of material into the corner to form the appropriate shape and finish by smoothing the edges flush with adjoining surfaces.

Clean all tools and equipment with xylol cleaner. Once hardened, product can only be removed mechanically.