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Sikadur®-61 Epoxy PU Joint

2-Component flexibilized hybrid adhesive and joint sealing

Sikadur®-61 Epoxy PU Joint is a 2- part flexibilized hybrid adhesive and joint sealing with unique mechanical properties based on a mix of epoxy, PU and special fillers. It is ideal for sealing joints, movement joints, expansion joints and repairing cracks. It bonds to concrete, masonry, steel, precast concrete, fiber cement board, wood and other construction materials and it is elastic with high mechanical properties.

  • Flexibility with high mechanical strength
  • Excellent adhesion to most surfaces such as concrete, steel, masonry, precast concrete, fiber - wood cement board and other construction materials
  • Vibration and impact resistant
  • non water absorption
  • Hardens without shrinkage
  • Easy to mix and apply and no primer needed
  • Different coloured components (for mixing control)
  • Thixotropic: non-sag in vertical and overhead applications
  • Green cleaning (Water cleanup formulation)
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Product Data Sheet
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Usage

For interior and exterior used,

Structural adhesive for:
  • Strengthening of masonry structures
  • Bonding of concrete joints
  • Bonding of concrete, steel and masonry substrates
Sealing joints for:
  • Low Movement joints
Repairing cracks:
  • Cracks on concrete or masonry substrates
 

Advantages

  • Flexibility with high mechanical strength
  • Excellent adhesion to most surfaces such as concrete, steel, masonry, precast concrete, fiber - wood cement board and other construction materials
  • Vibration and impact resistant
  • non water absorption
  • Hardens without shrinkage
  • Easy to mix and apply and no primer needed
  • Different coloured components (for mixing control)
  • Thixotropic: non-sag in vertical and overhead applications
  • Green cleaning (Water cleanup formulation)

Packaging

1 kg / set (A + B)

Colour

(A) White (B) Black

Product Details

Product Information

Composition

Epoxy modified polyurethane and special fillers

Shelf life

12 months from date of production if stored properly in original and unopened, sealed and undamaged packaging.

Storage conditions

Store in dry conditions at temperatures between +20 °C and +35 °C and protect from direct sun light.

Density

~ 1.40 - 1.50 kg / L (mixed A+B)

 
Technical Information

Shore A hardness

≥ 90

(ASTM D2240)

Tensile strength

≥ 3.50 MPa @ 7 days

(ASTM D638)

Elongation

40% - 60% @ 7 days

(ASTM D638)

Tensile adhesion strength

≥ 3 MPa @ 7 days (on concrete slab)

≥ 4 MPa @ 7 days (on steel plate)

(ASTM D4541)

Application

Application Information

Mixing ratio

Component A : B = 2 : 1 by weight

Pot Life

~ 60 minutes

Gel time

~ 100 - 140 minutes
Consumption

Consumption

For joint sealing 6 m / 1 kg (dimension width 1 cm x Depth 1 cm)
Application steps

SUBSTRATE PREPARATION

All substrates must be sound, dry, clean and free from standing water, grease, oils, old surface, treatments or coatings. And all loose or friable particles must be removed.

MIXING

Mix component A : B = 2 : 1 part by weight, mix thoroughly using either hand tools or low speed mixer (300 - 500 rpm). Mixed until to be homogeneous.
 

 

APPLICATION

Joint Sealing

  1. For applications where joints are very deep, recommend to use backing rod prior to fill the Sikadur®-61 Epoxy PU Joint.
  2. Apply Sikadur®-61 Epoxy PU Joint by trowel, spatula or sealant gun into the joints or the desired area.
  3. Recommendation thickness (sealing depth) for gap < 3.5 cm = 5 mm and gap > 3.5 cm - 5 cm = 10 mm.
  4. Allow a minimum of 24-48 hours setting time, before painting or applying a covering material.
  5. Masking tape must be used where sharp exact joint lines or exceptionally neat lines are required. Remove the tape whilst the material is still soft (within 30 minutes)


Crack Repairing

  1. On both sides of crack, the side edges be slightly chiseled to give a V shape. If required do chiseling until a hard concrete is encountered.
  2. Remove loose material from crack area and blow out the dust and debris from the gap of crack by using a compressor or air blower.
  3. Apply Sikadur®-61 Epoxy PU Joint by trowel, spatula or sealant gun into the cracks line.
  4. Allow a minimum of 24-48 hours setting time before painting or applying a covering material.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with clean water / warm water immediately after use. Hardened / cured material can only be mechanically removed.
 

 

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