SikaBond LA | MCT CHEMICALS | SIKA PAKISTAN

Uses
Sika Bond®-LA is a high-performance emulsion that significantly improves the properties of cement-based mortars, including:

• Thin layer patching mortars
• Renders
• Floor screeds
• Concrete repairs
• Abrasion-resistant coatings
• Tile adhesives
• Masonry mortars
• Dust control applications
• Bonding old concrete to new concrete

Characteristics and Advantages
Sika Bond®-LA is easily added to mixing water and provides the following advantages:

• Excellent adhesion
• Reduced shrinkage
• Increased elasticity
• Outstanding water resistance
• Enhanced abrasion resistance
• Improved chemical resistance
• Non-toxic

Additionally, Sika Bond®-LA does not re-emulsify, even in highly alkaline environments.

Approvals and Certificates
Sika Bond®-LA has been tested in compliance with SCAQMD Rule 1168.

• VOC content: 0 g/l

Product Information

• Composition: Styrene Butadiene Liquid
• Packaging: Available in 5 kg, 20 kg pails, and 200 kg drums
• Appearance/Color: White
• Shelf Life: 12 months when unopened. Store away from direct sunlight
• Storage Conditions: Store in a cool, dry place, away from heat and frost
• Density: 1.01 ± 0.01 kg/l
• Dry Material Content: Requires well-graded, thoroughly washed aggregates. Recommended particle sizes for various mortar thicknesses:
  • Up to 2 mm thick: 0-0.5 mm
  • 2 – 5 mm: 0-1.0 mm
  • 5 – 15 mm: 0-3.5 mm
  • Over 15 mm: 0-7.0 mm
  • Over 35 mm: 0-20 mm

Application Information

• Consumption: For general repairs, dilute with 1 to 2.5 parts water. For bonding applications, use undiluted or dilute in a 1:1 ratio with water.
• Approximate Consumption:
  • For 1:1 dilution: 2.3 kg/m² per cm thickness
  • For 1:2 dilution: 1.4 kg/m² per cm thickness
  • For 1:3 dilution: 1.1 kg/m² per cm thickness
  • For 1:4 dilution: 0.9 kg/m² per cm thickness

Application Instructions

• Surface Preparation: Ensure concrete surfaces are clean, sound, and free from contaminants such as oil, grease, and loose particles. Absorbent surfaces should be saturated to a surface-saturated dry (SSD) condition.
• Application Method: Sika Bond®-LA is typically added to clean mixing water at ratios between 1:1 and 1:2.5. For most applications, apply a bonding coat of Sika Bond®-LA (1:1 ratio with water) mixed with fresh cement onto prepared surfaces. Apply mortar while the bonding coat is still wet. If needed, apply additional Sika Bond®-LA solution.

Important Considerations

• Ensure mortar and concrete renderings are allowed to cure properly. Protect the applied material from heat and frost during the curing process.
• Avoid excessive air entrapment by not over-mixing.
• Always add cement and sand when using Sika Bond®-LA as a bonding agent, never just use the emulsion and water.
• Minimum application temperature: +5°C