Product Data Sheet Show all documents

Sikadur®-20 Crack Seal

Low viscosity and semi elastic epoxy resin

Sikadur®-20 Crack Seal is a solvent-free, 2-component low viscosity and semi elastic liquid, based on epoxy resins. It is used especially for sealing of non-structural cracks and cavities in concrete.

  • Semi elastic crack sealing
  • Low viscosity
  • Suitable in both, dry and damp conditions
  • High adhesive strength
  • No shrinkage
Product Data Sheet Show all documents

Usage

  • Fill and seal non-structural crack and cavities in structural concrete such as concrete decks, balconies, concrete roof structures, wet room, swimming pool and especially before waterproofing works.
  • Repair floor tile joint for leakage treatment at wet room.
 

Advantages

  • Semi elastic crack sealing
  • Low viscosity
  • Suitable in both, dry and damp conditions
  • High adhesive strength
  • No shrinkage

Packaging

Part A+B

160 mL set

Part A

80 mL

Part B

80 mL

Colour

Yellowish

Product Details

Product Information

Chemical base

Epoxy resin

Shelf life

12 months from date of production

Storage conditions

The product must be stored properly in undamaged, unopened original sealed packaging in dry conditions at temperatures between +10 °C and +35 °C. Protect from direct sunlight and frost.

Density

~1.05 kg/L (Part A+B mixed)

(EN ISO 2811-1)

Viscosity

~90 mPa·s (Brookfield viscometer, 2/30, +30 °C)
Technical Information

Flexural strength

Elastic (28 days cured at +30 °C)

(ASTM D790)

Tensile adhesion strength

~2.0 N/mm2 (concrete failure)

(EN 1542)

 

Application

Application Information

Mixing ratio

Part A : Part B = 1 : 1 (by volume)

Pot life

> 20 min (at +30 °C)
Application steps

SUBSTRATE QUALITY

  • Minimum age of concrete must be 28 days prior to application.
  • Surface must be clean and sound.
  • It may be dry or damp, but free of standing water.
  • Maximum crack width must be 10 mm.

SUBSTRATE PREPARATION

  1. Groove and clean the cracks / cavities / tile joint (free of water).

MIXING

  1. Slowly shake each components.
  2. Proportion 1 part Component A to 1 part Component B into a clean bottle.
  3. Invert the bottle 15 – 20 times slowly until uniformly mixed.
  4. Mix only quantity that can be used within it is pot life.

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