Sika® Icosit® KC 220/60 TX

2-component epoxy binder

24 months from date of production

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +10 °C and +25 °C. Always refer to packaging.

-40 °C up to +60 °C

Part A : Part B = 45 : 55 (p.b.w.)

Part A : Part B = 53 : 47 (p.b.v.)

~+20 °C.

+5 °C min. / +35 °C max.

+5 °C minimum / +35 °C maximum

Dry

Potlife begins when all parts have been mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the potlife.

Concrete

Concrete must be at least 3–6 weeks old.

Substrate surfaces must be sound, clean, dry or matt damp. Free from standing water, ice, dirt, oil, grease, coatings, laitance, efflorescence, old surface treatments, all loose particles and any other surface contaminants that could affect adhesion.

Steel

Surfaces must be clean, dry, free from oil, grease, coatings, rust scale, all loose particles and any other surface contaminants that could affect adhesion.

Concrete

Substrate must be prepared by suitable mechanical preparation i.e. very high pressure water blasting, needle gun, scabbler or bush hammer to achieve a laitance and contaminant free, open textured surface. To improve adhesion, apply Icosit® KC 330 Primer as a primer on absorbent substrates (concrete). Any pockets or holes for structural fixings must also be cleaned of all debris.

Steel
Substrate must be prepared by suitable mechanical preparation i.e. abrasive blast cleaning techniques or high pressure water-blasting, angle grinder to achieve a bright finish or to a standard equivalent to Sa 2½ as per EN ISO 12944.

For additional corrosion protection, use SikaCor®-299 Airless and Icosit® KC 330 Primer in combination to coat the steel surfaces.
Immediately blind (broadcast) the freshly applied coated surfaces with quartz sand (0,4–0,7 mm granulometry).

Avoid dew point conditions.

All substrates

All dust and loose material must be completely removed from all substrate surfaces before application of the product by vacuum / dust removal equipment.

Shutter Formwork

Where formwork is to be used, all formwork must be of adequate strength, treated with release agent and sealed to prevent leakage.

For grouting application, prepare the formwork to maintain a minimum 100 mm grout head to assist with placement. A grout box equipped with an inclined trough attached to the formwork will also improve the grout flow and reduce air voids.

Prior to mixing all parts, mix separately Part A (resin) using an electric single paddle mixer (speed ~ 600–800 rpm.) or other suitable equipment for ~60 seconds. Add Part B (hardener) to Part A and mix part A + B continuously for ~60–90 seconds until a uniformly coloured mix has been achieved. When Parts A and B have been mixed. Gradually add the appropriate granulometry of dried quartz sand. Mix for a further ~60–90 seconds until a uniform mix has been achieved. Excessive mixing must be avoided to minimise air entrainment. During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing. Mix full units only. Mixing time for A + B + quartz sand = ~3–4 minutes.

For adding sand to produce an epoxy mortar. Using a forced action / rotating pan / double paddle / trough type or other suitable equipment (free fall mixers must not be used).

Clean all tools and application equipment with Sika® Reinigungsmittel-5 immediately after use. Hardened material can only be removed mechanically.