Sika® Icosit® KC 340/65

2-part polyurethane

12 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.

System products:

• Sika® Icosit® KC 340/65

• Sikadur®-32+ for steel surfaces and green concrete

• Sika® Primer-115 for steel surfaces and dry and matt damp mature concrete

• Icosit® KC 330 Primer

Shore hardness assists with material identification and assessing the curing progress on site.

3.0 N/mm²

Long-term resistant against:

• Water

• Most detergents

• Sea water

Temporary resistant against:

• Mineral oils, diesel fuel

Short-term or no resistance against:

• Organic solvents (ester, ketone , aromates) and alcohol

• Concentrated acids and lyes

Contact Sika Technical Services for specific information.

~5.48 × 10⁹ Ω·m

-40 °C minimum / +80 °C maximum

short term +150 °C maximum

Static stiffness determined according to DIN 45673-1.

Test specimen dimensions: 1000 x 180 x 25 mm (pure material value measured without rail)

Preload: 1000 N

Testing speed: 2 kN/s

Maximum load: 50 kN

Bedding figure kstat = 192 [(kN/mm)/m] (±10 %)*, determined as per the secant method between 8 and 32 kN.

*Deviation of the bedding figure and the curve are ±10 %.

Part A : Part B = 100 : 15 (parts by weight)

Minimum 15 mm

Maximum 60 mm

Condition product parts before application preferably at +15 °C to assist with flow and curing speed

+5 °C min. / +35 °C max.

90 % max.

+5 °C min. / +35 °C max

Dry to matt damp

8 minutes at +20 °C

After this time, the mixture becomes unusable.

Higher temperatures will shorten pot life.

Tack-free: 2 hours at +20 °C

Trafficable: 12 hours at +20 °C

Waiting time for applying the Product on primer or coating at +20 °C:

0.9 kg per litre of volume to be sealed

Substrate must be sound, free from oil, grease, loose and friable particles. Slightly damp substrates are acceptable. Standing water must be removed (e.g. by vacuum extraction or oil free compressed air) before pouring Sika® Icosit® KC 340/65.

To improve adhesion, apply Icosit® KC 330 Primer as a primer on absorbent substrates (concrete). For corrosion protection, please contact local Sika technical service. Always comply with the waiting time limits between application of Icosit KC 330 Primer and pouring of Sika® Icosit® KC 340/65. Refer to the individual Product Data Sheets for more information.

The Product is supplied in pre-weighed composite units consisting of parts A + B.

Do not add any solvents to the Product.

SMALL PACKAGING UNITS

1. Use an electric or pneumatic mixer with spiral or basket stirrer, diameter 120–140 mm, speed 600–800 rpm.
2. Stir Part A thoroughly until the material is completely homogeneous for at least 30 seconds in the original container.
3. Add Part B and mix for a further 60–80 seconds. Note Ensure the material from the container walls and the base is also mixed in.
4. 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.

BIG PACKAGING UNITS

• Large volumes of the Product can be mixed and applied with special two-part casting machines, which both mix and pump the material.

• Large volumes of the Product can also be mixed using geared mixers, and application is performed separately.

  A suitable geared mixer is the GRS 300/1,5 from Geppert Rührtechnik GmbH, equipped with three blades Ø 300 mm. Refer to the equipment supplier’s instruction manual.

  Mount the agitator shaft on a drum lid which replaces the original lid during stirring. Stir Part A thoroughly, then add Part B and stir for approx. 5 minutes.

Contact Sika Technical Services for information about suitable mixing machines.

Material is suitable for application with special 2-part casting machines. Correct mix ratio must be carried out. Part A must be stirred at regular intervals. Reference must be made to equipment supplier’s instruction manual.

Green and wet concrete:

Freshly applied Sikadur®-32+ with theoretical consumption: ~0.60 kg/m2 should be broadcasted with quartz sand, granulometry: ~0.2 up to ~0.8 mm, theoretical consumption: ~2 kg/m2.

1) Concrete substrates: "green", the mat-damp concrete surface, after at least the first day of maturation, and on a min 14 days old concrete.

Substrate must be solid, rough and clean: the concrete surface should be free from loose fractions, dust, cement laitance, oil stains, grease and other contaminants.

a) "Green", the mat-damp concrete surface, without a shiny layer of water on the surface (may be locally dry or mat-damp, with light and dark spots); should meet the following requirements, after at least the 1st day of maturing: the designed concrete class should be at least C30/37; the water/cement ratio of the designed concrete should be w/c= 0.50; the surface of fresh concrete should be "brushed" about 6-8 hours after mixing the concrete mixture with the use of stiff brushes in order to remove the cement laitance surface.

b) Mature concrete substrate (min 14 days old): substrate strength tested using the "pull-off" method should be at least 1.5 MPa; concrete with no visible traces of moisture and no darkening caused by moisture. The concrete substrates must be prepared mechanically using suitable abrasive blast cleaning or planing / scarifying equipment to remove cement laitance and achieve an open textured gripping surface. High spots can be removed by grinding.

2) Steel substrates must be prepared mechanically using suitable abrasive blast cleaning to remove all corrosion products and achieve a bright metal finish. All dust, loose and friable material must be completely removed from all surfaces before application of the product and associated system products, preferably by vacuum extraction equipment.

Waiting Time / Overcoating: Minimum 24 hours, maximum 7 days

Mixing and application tools must be cleaned at regular intervals and immediately after use with Sika® Cleaner 5. Hardened material can only be removed mechanically