Sikalastic®-150 | MCT CHEMICALS | SIKA PAKISTAN

Uses
Due to its excellent elasticity, Sikalastic®-150 is suitable for various structures, especially those subjected to thermal movement and vibrations. It is ideal for:

• Waterproofing and protecting hydraulic structures such as water storage tanks, swimming pools, concrete pipes, bridge parapets, and water canals.
• Waterproofing and protecting external walls that are buried below ground.
• Interior waterproofing of walls and floors in basements or other underground structures against hydrostatic pressure.
• Waterproofing terraces and balconies with concrete or old tile surfaces.
• Protection of exposed, weathered, new, and existing concrete surfaces as a flexible, anti-carbonation, chloride, and sulphate-resistant coating. Also used for sealing cracks caused by plastic and hydraulic shrinkage.
• Elastic coating for precast concrete surfaces exposed to flexural loads and vibrations.

Characteristics / Advantages

• Easy to apply using a metal spatula, roller, flat brush, or spray, even on vertical walls and ceilings.
• Accommodates flexural strains in the substrate.
• Crack-bridging capability, even over existing or future cracks.
• Strong adhesion to a variety of substrates, including concrete, cementitious mortars, stone, ceramics, bricks, and wood.
• Can be applied to SSD (Saturated Surface Dry) concrete.

Tests / Approvals / Standards

• Certified for use in contact with potable water (AS4020:2005).
• ARPA, Italy: Certification for drinking water, water permeability (direct and negative pressure), and crack-bridging.
• Istituto di Ricerche E Collaudi: Elastic Modulus testing.
• Politecnico di Milano: Bonding in immersed conditions (various media).

Product Data

• Form: Liquid (Component A), Powder (Component B)
• Colour: Grey
• Packaging: Liquid component A – 6.4 kg, Powder component B – 20 kg

Storage

• Conditions / Shelf Life: 12 months from production date if stored in original, undamaged packaging in dry conditions, protected from sunlight, and at temperatures between +5°C and +30°C.

Technical Data

• Chemical Base: Acrylic emulsion (liquid component), Cement, special aggregates, fibres, and additives (powder component)
• Density (Fresh Mortar): 1.7 ± 0.1 kg/l (EN 12190)
• Grading: Dmax: 0.5 mm (EN 12192-1)
• Layer Thickness: For effective waterproofing: 3-4 mm (maximum 2 mm per coat)
• Water Penetration under Hydrostatic Pressure:
  • Positive hydrostatic pressure: tested at 0.7 MPa without absorption (DIN 1048)
  • Negative hydrostatic pressure: tested at 0.1 MPa without leakage
• Mechanical / Physical Properties:
  • Bond Strength: ~ 0.5 N/mm² (+23°C/50% r.h.) (EN 1542)
  • E-Modulus: ~ 16.64 N/mm² (+23°C/50% r.h.)
  • Crack Bridging Capacity: 1.63 mm (non-reinforced concrete, pre-cracked) (+23°C/50% r.h.), 1.57 mm (non-reinforced, non-cracked) (+23°C/50% r.h.)

System Information

• Consumption / Dosage: The application rate depends on substrate roughness and layer thickness. A general guide is 1.7 kg of Sikalastic®-150 per m² per mm of thickness. For a 3-4 mm layer, one 26.4 kg unit covers approximately 3.5 to 5 m².
• Substrate Quality: The substrate must be dry, structurally sound, free from laitance, dirt, oil, grease, and loose particles. Tiled surfaces must have no loose tiles or deteriorated joints.

Substrate Preparation

• Concrete Surface: Prepare using mechanical methods like high-pressure water jetting, needle guns, grit blasting, or hammers. The substrate should be dry or slightly wet.
• Tiled Floor/Wall: Clean ceramic tiles by wire-brushing, grinding, and vacuuming to remove dust, oils, or grease. Ensure the substrate is dry.

Substrate Levelling / Repair:
Repair large voids, honeycombing, broken edges, or holes with appropriate Sika® mortars (e.g., Sika® MonoTop, SikaTop®). For swimming pools, tanks, basements, etc., use corner fillets between walls and floors with Sika® mortars. Seal joints, pipe entries, and installations with suitable materials.

Application Conditions / Limitations

• Substrate Temperature: Min. +8°C / Max. +35°C
• Ambient Temperature: Min. +8°C / Max. +35°C
• Relative Air Humidity: < 75% r.h.