Sikafloor® 82 Epocem | MCT CHEMICALS | SIKA PAKISTAN

USES
Sikafloor®-82 EpoCem® is intended for use by skilled professionals only. It serves as a Temporary Moisture Barrier (TMB) with a thickness of 3-7 mm, enabling the application of resin-based floors (Epoxy, Polyurethane, and PMMA*) on high-moisture substrates, including green concrete, providing a durable solution. It is also used as a self-smoothing screed for:

• Leveling or patching horizontal concrete surfaces, whether new or in repair, in chemically aggressive environments
• Floor topping for non-ventilated damp substrates, where aesthetics are not a primary concern
• A leveling layer beneath Epoxy, Polyurethane, PMMA coatings, tiles, carpets, sheet floors, or wooden floors
• Repair and maintenance of monolithic and vacuum concrete floors
  Designed for use on cementitious substrates:
• Suitable for moisture control (Principle 2, Method 2.3 of EN 1504-9)
• Suitable for physical resistance (Principle 5, Method 5.1 of EN 1504-9)
• Suitable for restoration work (Principle 3, Method 3.1 of EN 1504-9)
• Suitable for preserving or restoring passivity (Principle 7, Methods 7.1 and 7.2 of EN 1504-9)
• Suitable for increasing resistivity (Principle 8, Method 8.3 of EN 1504-9)

CHARACTERISTICS / ADVANTAGES

• Can be overcoated with resin-based flooring after 24 hours (+20ºC, 75% relative humidity)
• Prevents osmotic blistering in resin coatings over damp substrates
• Easy to apply with good leveling properties
• Impermeable to liquids, but allows water vapor permeability
• Compatible with bituminous overlays
• Resistant to frost and de-icing salts
• Strong chemical resistance
• Thermal expansion similar to concrete
• Excellent bond to both green and cured concrete, whether dry or damp
• Strong early and final mechanical strength
• Excellent resistance to water and oils
• Ideal preparation for smooth surface finishes
• Suitable for interior use
• Solvent-free
• Will not corrode reinforcement steel

APPROVALS / STANDARDS
Test report from MPA Dresden GmbH, dated 29/11/2004.

• Epoxy-modified cementitious mortar for self-smoothing screeds, in compliance with EN 1504-2:2004, EN 1504-3:2005, and EN 13813:2002. Certified by Factory Production Control Body No. 2116, with CEmark.

PRODUCT INFORMATION

• Chemical Base: Epoxy-modified cementitious mortar
• Packaging: Pre-measured 29 kg units
  • Part A: 1.14 kg plastic container
  • Part B: 2.86 kg plastic container
  • Part C: 25 kg plastic bags
• Appearance / Color:
  • Part A: White liquid resin
  • Part B: Transparent yellow liquid hardener
  • Part C: Natural grey aggregate powder
  • Final color: Light grey
• Shelf Life: Part A and B: 12 months; Part C: Contact Sika for details
• Storage: Store in dry conditions in unopened, undamaged packaging at temperatures between +5°C and +30°C.
  • Protect Part A and B from frost
  • Protect Part C from humidity
• Density:
  • Part A: ~1.05 kg/L
  • Part B: ~1.03 kg/L
  • Mixed resin: ~1.97 kg/L
  • Mixed A+B+C: ~2.10 kg/L

TECHNICAL INFORMATION

• Compressive Strength:
  • 1 day: ≥ 15 N/mm²
  • 28 days: ≥ 45 N/mm²
• Tensile Strength in Flexure:
  • 1 day: ≥ 2 N/mm²
  • 28 days: ≥ 10 N/mm²
• Freeze/Thaw De-Icing Salt Resistance: WFT-L 86% (High)
• Carbonation Resistance: For 8 mm thickness, R ≈ 24.2 m

SYSTEM INFORMATION
For the system configuration, refer to the following guidelines:

• Substrates: Green concrete (once mechanical preparation is possible), damp concrete (older than 14 days), damp-aged concrete with rising moisture
• Primer: Sikafloor®-155 WN
• Screed: Sikafloor®-82 EpoCem®
• Top Coat: Choose from Sikafloor® and Sikagard® ranges
• Bonding Bridge: Sikafloor®-155 WN for interlayer priming

APPLICATION INFORMATION

• Mixing Ratio:
  • Part A: 1.14 kg
  • Part B: 2.86 kg
  • Part C: 25 kg
• Screed:
  • At temperatures between +12ºC to +25ºC: Mix 1:2.5:21.9 (by weight)
  • At temperatures between +8ºC to +12ºC and +25ºC to +30ºC: Reduce Part C to 24 kg for better workability (not more than this reduction)
• Primer Application: Sikafloor®-155 WN (parts A+B) diluted with 10% water, approximately 0.3 – 0.5 kg/m²
• Self-smoothing Screed Consumption: ~2.25 kg/m² per mm of thickness, with a minimum of 6.75 kg/m² for a 3 mm thick application
• Layer Thickness: Minimum 3.0 mm, maximum 7.0 mm
• Relative Air Humidity: 20% to 80%
• Substrate Temperature: Minimum +8°C, maximum +30°C
• Substrate Moisture Content: Can be applied on green or damp concrete (no standing water)
  • Wait at least 3 days for early shrinkage of concrete to avoid cracks
• Pot Life:
  • At +10°C: ~50 minutes
  • At +20°C: ~25 minutes
  • At +30°C: ~12 minutes
• Curing Time:
  • Once tack-free, vapour-permeable seal coats can be applied
  • For vapour-tight coatings, ensure surface moisture is below 4%:
    • At +10°C: ~3 days
    • At +20°C: ~1 day
    • At +30°C: ~1 day