2-part polyurethane grout under discrete baseplates of main-line tracks Sika Icosit KC 340/7 is a flexible 2-part polyurethane polymer resin grout. It is designed as a vibration absorbing, load-bearing, flexible grout for the precision alignment of rails, turnouts/switches etc. Sika Icosit KC 340/7 is also used for fixing track components to rigid substrates such as concrete slabs, steel bridge decks and tunnel invert slabs. - Heavy axle load vehicles.
- Noise & vibration suppression.
- Reduces erosion of concrete under baseplate.
- More uniform load distribution into substructure.
- Watertight undersealing.
- Flexible, elastic (shore A 75).
- Damping, compressible.
- Good electrical insulation against stray currents.
- No stress peaks on anchor bolts.
- 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.
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Usage As a noise and vibration reducing grout under discrete baseplates of main-line track sections. Advantages - Heavy axle load vehicles.
- Noise & vibration suppression.
- Reduces erosion of concrete under baseplate.
- More uniform load distribution into substructure.
- Watertight undersealing.
- Flexible, elastic (shore A 75).
- Damping, compressible.
- Good electrical insulation against stray currents.
- No stress peaks on anchor bolts.
- 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 Part A | 5,22 kg container | Part B | 0,78 kg container | A+B | 6 kg | |
Technical Information Shore A Hardness 75 ± 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. Test specimen dimensions: 360 × 160 × 25 mm (pure material value measured without rail) Preload: 1,000 N Testing speed: 2 kN/s Maximum load: 50 kN Bedding figure kstat = ~44 [(kN/mm)/m] (±10 %)*, determined as per the secant method between 17 and 68 kN. *Deviation of the bedding figure and the curve are ±10%. Electrical Resistivity ~2,34 × 109 Ω·m | (DIN VDE 0100-610 and DIN IEC 93) |
Service Temperature -40 °C minimum / +80 °C maximum short term up to +150 °C Chemical Resistance 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. |
Application Information Mixing Ratio Part A : Part B = 100 : 15 (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 min. / +35 °C max. Relative Air Humidity 90 % maximum Substrate Temperature +5 °C min. / +35 °C max. Substrate Moisture Content Dry to matt damp Pot Life ~8 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 ~12 hours at +20 °C Curing Rate Shore A | Curing Temperature | Curing Time | 0 °C | 5 °C | 23 °C | 35 °C | 1 h | - | - | ~45 | ~55 | 2 h | - | ~20 | ~50 | ~60 | 4 h | ~25 | ~40 | ~55 | ~65 | 7 h | ~45 | ~50 | ~60 | ~65 | 1 d | ~60 | ~60 | ~65 | ~70 | 2 d | ~65 | ~65 | ~70 | ~70 | 5 d | ~65 | ~70 | ~70 | ~75 | 7 d | ~70 | ~70 | ~75 | ~75 | 14 d | ~75 | ~75 | ~75 | ~75 | Waiting Time / Overcoating On primer or coating at +20 °C | Minimum | Maximum | Icosit KC 330 Primer | 1 h | 3 d | SikaCor-299 Airless | 24 h | 7 d | Sikadur-32 + | 24 h | 7 d | |
The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.