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.
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
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.
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 |
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
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).
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.