Sika Sikadur -32 N

Uses

As a structural bonding agent and adhesive for:

• Concrete elements (including bonding fresh to hardened concrete)
• Hard natural stone
• Ceramics, fibre-cement
• Mortar, Bricks, Masonry
• Steel, Iron, Aluminium
• Wood
• Polyester/fibreglass and Epoxy resin materials
• Glass

Features & Benefits

• Easy to mix and apply
• Suitable for dry and damp concrete surfaces
• Very good adhesion to most construction materials
• High Bond Strength
• Hardens without shrinkage
• Different coloured components (for mixing control)
• No primer needed
• High initial and ultimate mechanical strength
• Impermeable to liquids and water vapour
• Good chemical resistance

Application Instructions

Substrate Quality

• Hardened mortar and concrete must be older than 28 days (depending on any minimal strength requirements).
• Verify the substrate strength by testing (concrete, masonry, natural stone).
• The substrate surface (all types) must be clean, dry and free from contaminants such as dirt, oil, grease, existing surface treatments and coatings etc.
• Steel substrates must be de-rusted to a condition similar to Sa 2.5.
• The substrate must be sound and all loose or friable particles must be removed.

Substrate Preparation

Concrete, mortar, stone and brick substrates.:

• Concrete and other hardened mineral substrates must be prepared by suitable means such as high-pressure water jetting and/or blast cleaning, in order to obtain surfaces that are sound, clean, dry and free from any cement laitance, ice, standing water, grease, oils, old coatings or other surface treatments. Any loose or friable particles must also be removed to achieve a contaminant-free and open-textured surface.

Steel substrates:

• Steel surfaces must be cleaned and prepared thoroughly to the acceptable quality standard equivalent to Sa 2.5 i.e. normally by blast-cleaning and then removing any dust by vacuum. Avoid dew point conditions

Mixing

• Mix parts A+B together for at least 3 minutes with a mixing spindle attached to a slow-speed electric drill (max. 300 rpm) until the material becomes smooth in consistency and uniform grey colour. Avoid aeration while mixing. Then, pour the whole mix into a clean container and stir again for approx. 1 more minute at low speed to keep air entrapment at a minimum. Mix only that quantity which can be used within its pot life

Application Method/Tools

• Apply the mixed Sikadur®-32 N to the prepared surface by brush, roller, spray or with a trowel, and ensure uniform and complete coverage. On hardened concrete substrates mechanically prepared to receive fresh concrete, always apply by brush and work the material well into the substrate.
• Place the fresh concrete whilst the Sikadur®-32 N layer is still ‘tacky’. If the material becomes glossy and loses tackiness, apply a fresh coat with additional Sikadur®-32 N and proceed.

Cleaning of Tools

• Clean all tools and application equipment with Thinner C immediately after use. Hardened/cured material can only be mechanically removed.

Limitations

• Sikadur® resins are formulated to have low creep under permanent loading. However, due to the creep behaviour of all polymer materials under load, the long-term structural design load must account for creep. Generally, the long-term structural design load must be lower than 20-25% of the failure load. Please consult a structural engineer for load calculations for your specific application.

Local Restrictions

Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields

Storage Conditions

Store properly in original unopened, sealed and undamaged packaging, in dry conditions at temperatures between +5°C and +30°C. Protect from direct sunshine.