Sika® Icosit® KC 340/35
2-part polyurethane grout for continuous embedded tracks (shore A 40)
Sika® Icosit® KC 340/35 is a flexible two-part polyurethane polymer resin grout that can be applied manually or by machine.
It is designed as a vibration absorbing, load-bearing, flexible grout for the continuous fixing of embedded grooved rails.
Particularly suitable for embedded (floating) rail designs.
- Light axle loads and high deflection.
- Noise and vibration suppression.
- More uniform load distribution into substructure.
- Watertight undersealing.
- Flexible, elastic (shore A 40).
- Damping, compressible.
- Good electrical insulation against stray currents.
- Excellent adhesion on various substrates.
- Levels out tolerances.
- Suitable as a powerful, shear-resistant adhesive.
- Absorbs dynamic stresses and prolongs the life of concrete substructure.
- Insensitive to moisture.
- Long durability, less maintenance.
Usage
As a noise and vibration reducing grout for continuous embedded tram or LRT track sections and road crossing applications.Advantages
- Light axle loads and high deflection.
- Noise and vibration suppression.
- More uniform load distribution into substructure.
- Watertight undersealing.
- Flexible, elastic (shore A 40).
- Damping, compressible.
- Good electrical insulation against stray currents.
- Excellent adhesion on various substrates.
- Levels out tolerances.
- Suitable as a powerful, shear-resistant adhesive.
- Absorbs dynamic stresses and prolongs the life of concrete substructure.
- Insensitive to moisture.
- Long durability, less maintenance.
Packaging
| Manual application | Machine application | |
| Part A | 8,9 kg container | 160 kg drum |
| Part B | 1,1 kg container | 19,2 kg container |
| A + B | 10 kg | 179,2 kg |
Refer to current price list for packaging variations.
Colour
Light grey
Product Details
Chemical Base
2-part polyurethane
Shelf Life
12 months from date of production
Storage Conditions
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.
Density
| Part A | ~0,9 kg/l |
| Part B | ~1,2 kg/l |
| A + B | ~1 kg/l |
System Structure
- Sika® Icosit® KC 340/35
- Sikadur®-32 +: For green and wet concrete
- Icosit® KC 330 Primer
Shore A Hardness
| 40 ± 5 (after 28 days) | (ISO 868) |
Shore hardness assists with material identification and assessing the curing progress on site.
Compressive stiffness
Load-Deflection Diagram
Static stiffness determined according to DIN 45673-1.
Dimensions of test specimen 1000 × 180 × 25 mm;
Spring index kstat = 25 kN/mm (± 10 %), determined as per the secant method between 4 and 32 kN.
Tensile Strength
| ~0,9 N/mm2 | (ISO 527) |
Electrical Resistivity
| ~1,5 × 109 Ω·m | (DIN VDE 0100-610 and DIN IEC 93) |
Service Temperature
-40 °C minimum / +80 °C maximum
Short term: +150 °C maximum
Chemical Resistance
Long-term resistant against:
- Water
- Most detergents
- Sea water
- Alkaline water
Short-term resistant against:
- Mineral oils, diesel fuel, vegetable and animal fat
Short-term or no resistance against:
- Organic solvents (ester, ketone , aromates) and alcohol
- Solvents and thinners
- Strong lyes and acids
Contact Sika Technical Services for specific information.
Application
Mixing Ratio
Part A : Part B = 100 : 12 (parts by weight)
Layer Thickness
15 mm minimum
60 mm maximum
Product Temperature
Condition product parts before application preferably at ~+15 °C to assist with flow and curing speed
Ambient Air Temperature
+5 °C minimum / +35 °C maximum
Relative Air Humidity
90 % maximum
Substrate Temperature
+5 °C minimum / +35 °C maximum
Substrate Moisture Content
Dry to matt damp
Pot Life
~11–12 minutes at +20 °C
After this time, the mixture becomes unusable.
Higher temperatures will shorten pot life.
Curing Time
Tack-free ~2 hours at +20 °C
Trafficable ~24 hours at +20 °C
Curing Rate
| Shore A | Curing Temperature | ||
| Curing Time | 5 °C | 23 °C | 35 °C |
| 2 hours | - | ~10 | ~15 |
| 3 hours | - | ~15 | ~20 |
| 4 hours | - | ~20 | ~25 |
| 7 hours | - | ~25 | ~25 |
| 1 day | ~20 | ~30 | ~30 |
| 2 days | ~25 | ~30 | ~30 |
| 7 days | ~30 | ~30 | ~30 |
| 14 days | ~30 | ~30 | ~30 |
Waiting Time / Overcoating
Waiting time between primer and Sika® Icosit® KC 340/35 at 20 °C:
| Minimum | Maximum | |
| Icosit® KC 330 Primer | 1 hour | 3 days |
| Sikadur®-32 + | 24 hours | 7 days |
Consumption
~1 kg of Sika® Icosit® KC 340/35 per litre of volume to be filled up.
SUBSTRATE QUALITY
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 340/35.
SUBSTRATE PREPARATION
To improve adhesion, apply Icosit® KC 330 Primer as a primer on absorbent substrates (concrete).
Always comply with the waiting time limits between application of Icosit KC 330 Primer and pouring of Sika® Icosit® KC 340/35.
Refer to the individual Product Data Sheets for more information.
MIXING
Sika® Icosit® KC 340/35 is supplied in pre-weighed composite units consisting of parts A + B. Part A must be stirred thoroughly before being mixed with part B.
10 kg units
The following mixing instructions must be carried out:
Use an electric or pneumatic mixer with basket type stirrer or helical stirrer, diameter 120–140 mm, speed ~600–800 rpm.
Mixing time ~60–80 seconds
Ensure material is mixed from the container walls and the base by the stirrer during mixing.
179,2 kg units
Recommended mixer for stirring Part-A in 179,2 kg drums:
Geppert Rührtechnik GmbH gear stirrer GRS 300/1,5 equipped with three blades Ø 300 mm. Gear stirrer must be mounted on a drum lid which replaces the original lid during stirring. Stirring time ~5 minutes.
CLEANING OF TOOLS
Mixing and application tools must be cleaned at regular intervals and immediately after use with Sika® Thinner C. Hardened material can only be removed mechanically