Product Data Sheet Show all documents

Sikadur®-53

Epoxy crack injection and grouting resin for all conditions, including wet and underwater

Sikadur®-53 is a two-part, epoxy, moisture resistant crack injection and grouting resin. 

  • Suitable for dry, damp, wet and underwater conditions.
  • Application temperature range +5 °C to +30 °C.
  • Shrinkage-free hardening.
  • Seals against moisture and oxygen.
  • Good adhesion to concrete, masonry, stone and steel substrates.
  • Good adhesion to salt water immersed, cementitious substrates.
  • High density ensures good water displacement.
  • Good mechanical underwater strengths.
  • Minimum crack widths 0.5 mm.
  • Injectable with single component pumps.
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Product Data Sheet Show all documents

Usage

  • Crack injection resin to seal damp and wet cracks by high pressure injection.
  • Fills and seals voids and cracks in structures such as bridges, civil engineering structures, industrial and residential buildings (e.g. columns, beams, foundations, walls, floors, water retaining structures, etc.).
  • Structural bonding.
  • Preventing ingress of water and infiltration of reinforcement corrosion promoting substances.
  • As a grouting resin or adhesive for bonding concrete and steel underwater (by water displacement).
 

Advantages

  • Suitable for dry, damp, wet and underwater conditions.
  • Application temperature range +5 °C to +30 °C.
  • Shrinkage-free hardening.
  • Seals against moisture and oxygen.
  • Good adhesion to concrete, masonry, stone and steel substrates.
  • Good adhesion to salt water immersed, cementitious substrates.
  • High density ensures good water displacement.
  • Good mechanical underwater strengths.
  • Minimum crack widths 0.5 mm.
  • Injectable with single component pumps.

Packaging

Parts (A+B): 20 kg pre-batched unit:

Part A

17.77 kg container

Part B

2.23 kg container

Parts (A+B): 6 kg pre-batched unit:

Part A

5.33 kg container

Part B

0.67 kg container

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • CE Marking and Declaration of Performance to EN 1504-4 - Structural bonding.
  • CE Marking and Declaration of Performance to EN 1504-5 - Concrete Injection.
  • CE Marking and Declaration of Performance to EN 1504-6 - Anchoring of reinforcing steel bar.
Product Information

Chemical Base

Epoxy resin and selected fillers

Shelf Life

24 months from date of production

Storage Conditions

The product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Density

Part A

~2,35 kg/l

Part B

~1,02 kg/l

Part A+B mixed

~2,04 kg/l

Note: at +20 °C. 

Viscosity

Temperature

Part A+B mixed

+10°C

~15 200 mPa·s

+20°C

~5 800 mPa·s
Technical Information

Compressive Strength

Time

+5 °C

+20 °C

1 day

—

~33 N/mm2

3 days

~39 N/mm2

~61 N/mm2

14 days~70 N/mm2~90 N/mm2

Product cured and tested at temperatures indicated, grouted and cured underwater.

Modulus of Elasticity in Compression

~6300 N/mm2

(EN 13412)

Flexural Strength

Time

+5 °C

+20 °C

1 day

—

~25 N/mm2

2 days

~28 N/mm2

~38 N/mm2

14 days~38 N/mm2~40 N/mm2

Product cured and tested at temperatures indicated, grouted and cured underwater. 

Flexural E-Modulus

~3300 N/mm2

(EN 53452)

Tensile Strength

~20 N/mm2 (14 days at +20 °C)

Product cured and tested at temperatures indicated, grouted and cured underwater. 

Tensile adhesion strength

~2,5 – 3,5 N/mm2 (concrete failure)

(ISO 4624, EN 1542)

Shrinkage

Hardens without shrinkage.

Coefficient of Thermal Expansion

~7,5 × 10–5 1/K

(linear expansion between -20 °C and +60 °C)

Electrical Resistivity

~4.12 GΩ

(surface resistance within the range of 0.8 to 8.8 GΩ which corresponds with EN 50122-2)

Application

Application Information

Mixing Ratio

Part A : Part B = 8 : 1 parts (by weight)

Part A : Part B = 3.6 : 1 parts (by volume)

Layer Thickness

30 mm maximum

Ambient Air Temperature

+5 °C minimum / +30 °C maximum

Substrate Temperature

+5 °C minimum / +30 °C maximum

 

Pot Life

Quantity: 18 kg

Temperature

Pot-life

+8° C

~60 minutes

+20 °C

~30 minutes

+30° C

~15 minutes

+40° C

~7.5 minutes

The pot-life begins when Parts A+B are mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the pot-life. To obtain longer workability at high temperatures, the mixed adhesive may be divided into smaller quantities. Another method is to chill Parts A+B before mixing (although not below +5 °C).
Application steps

SUBSTRATE QUALITY

ADHESIVE AND GROUTING

Concrete / Masonry / Mortar / Stone

Concrete and mortar must be at least 28 days old. Verify the substrate strength to ensure design strengths are achieved.

Substrate surfaces can be dry, damp, wet or underwater, but must be stable, clean, free from ice, dirt, oil, grease, coatings, laitance, efflorescence, old surface treatments, all loose particles and any other surface contaminants that could affect adhesion.

Steel

Surfaces must be clean, dry, free from oil, grease, coatings, rust, scale, all loose particles and any other surface contaminants that could affect adhesion.
 

CRACK INJECTION

Cracks must be clean and either dry, damp, wet or underwater.

SUBSTRATE PREPARATION

ADHESIVE AND GROUTING

Concrete / Masonry / Mortar / Stone

Substrates must be prepared mechanically using suitable abrasive blast cleaning, needle gunning, light scabbling, bush hammering, grinding or other suitable equipment to achieve an open textured gripping surface profile.

Steel

Surfaces must be prepared mechanically using suitable abrasive blast cleaning, grinding, rotating wire brush or other suitable equipment to achieve a bright metal finish with a surface profile to satisfy the necessary tensile adhesion strength requirement. Avoid dew point conditions before and during application.

CRACK INJECTION

After inserting or bonding injection ports, cap the crack with a capping sealer, allow to cure then purge cracks with resin until the resin runs clean and contaminant free.

MIXING

Prior to mixing all parts, mix Part A (resin) briefly using a mixing spindle attached to a slow speed electric mixer (maximum 400 rpm). Add Part B (hardener) to part A and mix Parts A+B continuously for at least 3 minutes until a uniformly coloured smooth consistency mix has been achieved. To ensure thorough mixing, pour materials into a clean container and mix again for approximately 1 minute. Overmixing must be avoided to minimise air entrainment. Mix full units only. Mixing time for A+B = 4.0 minutes. Mix only the quantity which can be used within its pot-life.

For use on damp, wet and underwater applications, after final mixing, wait 15 minutes (at +20 °C) to allow the mixture to pre-react for optimal adhesion.

CLEANING OF TOOLS

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

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