Product Data Sheet Show all documents

Sika® Icosit® KC 340/45 CA

2-part polyurethane grout for continuous embedded tracks with medium axle loads

Sika® Icosit® KC 340/45 CA is a flexible 2-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 fixing grooved or T–rails onto concrete slabs, steel bridge decks and tunnel invert slabs. Particularly suitable for embedded (floating) rail designs.

  • Medium axle loads and standard deflection
  • Noise & vibration suppression
  • More uniform load distribution into substructure
  • Watertight undersealing
  • Flexible, elastic 
  • 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
Product Data Sheet Show all documents

Usage

As a noise and vibration reducing grout for continuous embedded grooved or T–rails and road crossing applications.  

Advantages

  • Medium axle loads and standard deflection
  • Noise & vibration suppression
  • More uniform load distribution into substructure
  • Watertight undersealing
  • Flexible, elastic 
  • 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

Volume

Net weight

Part A (pail)

10.14 L (2.68 US gal.)

8.93 kg (19.69 lbs)

Part B (can)

0.87 L (0.23 US gal.)

1.07 kg (2.36 lbs)

A + B

11 L (2.91 US gal.)

10 kg (22 lbs)

Colour

Light grey

Product Details

Product Information

Composition / Manufacturing

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 (50 °F and 77 °F). Always refer to packaging.

Density

Part A

0.88 g/mL

Part B

1.23 g/mL
System information

System Structure

  • Sika Icosit® KC 330 Primer CA
  • Sika® Icosit® KC 340/45 CA
Technical Information

Shore A Hardness

55 ± 5 (after 28 days)

(ASTM D2240)

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

Tensile Strength

1.8 MPa

(ASTM D638)

Electrical Resistivity

~2.85 x 109 Ωm

Service Temperature

  • -40 °C min. / +80 °C max.
    (-40 °F min. / 176 °F max.)
  • Short term up to +150 °C (300 °F)

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 Canada Inc. for specific information.

Application

Application Information

Mixing Ratio

Part A : Part B = 100 : 10 (parts by weight)

Layer Thickness

Min. 15 mm

Max. 60 mm

Product Temperature

Condition product parts before application preferably at +15 °C (59 °F) to assist with flow and curing speed.

Ambient Air Temperature

+5 °C min. / +35 °C max.

(41 °F min. / 95 °F max.)

Relative Air Humidity

90 % max.

Substrate Temperature

+5 °C min. / +35 °C max.

(41 °F min. / 95 °F max.)

Substrate Moisture Content

Dry to matt damp

Pot Life

~10 minutes at +20 °C (68 °F)

After this time, the mixture becomes unuseable.

Higher temperatures will shorten potlife.

Curing Time

Tack-free

~2 hours at +20 °C (68 °F)

Traffickable

~24 hours at +20 °C (68 °F)

Curing Rate

Shore A

Curing Temperature

Curing Time+5 °C (41 °F)+23 °C (73 °F)+35 °C (95 °F)

2 h

-

~15

~20

4 h

-

~25

~30

7 h

~10

~30

~45

1 day~30~40~45
3 days~40~50~55
7 days~45~55~55
14 days~45~55~55

Waiting Time / Overcoating

On primer or coating at +20 °C (68 °F)

Minimum

Maximum

Sika Icosit® KC 330 Primer CA

1 hour

3 days
Consumption

Consumption

~0.9 kg per litre of volume to be sealed
Application steps

SUBSTRATE QUALITY

  • Substrate must be sound, free from oil, grease, loose and friable particles or any contaminants or conditions that may affect adhesion or overall product performances.
  • Concrete tensile strength ≥ 1.5 MPa.

SUBSTRATE PREPARATION

  • To improve adhesion, apply Sika Icosit® KC 330 Primer CA as a primer on concrete and steel substrates.
  • Always comply with the waiting time limits between application of Sika Icosit® KC 330 Primer CA and pouring of Sika® Icosit® KC 340/45 CA.
  • Refer to the individual Product Data Sheets for more information.

MIXING

  • Sika® Icosit® KC 340/45 CA is supplied in pre-weighed composite units consisting of parts A + B.
  • Part A must be stirred thoroughly before being mixed with part B.
  • 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.
 

CLEAN UP

Mixing and application tools must be cleaned at regular intervals and immediately after use with Sika® Urethane Thinner and Cleaner. Hardened material can only be removed mechanically. For removal of uncured material from hands and sensitive surfaces, use
Sika® Hand Cleaner towels.

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