Sikadur®-53 UF Grout
Moisture insensitive flowable high early strength epoxy resin grout
Sikadur®-53 UF Grout is a 3-part high performance, high early strength, solvent free, moisture tolerant pourable epoxy grout. It has good flowability, low shrinkage, good mechanical strengths and is suitable for many static or dynamic precision grouting applications. Also suitable as a flowable concrete repair material. Specially designed for grouting in under water / wet conditions. When it is poured into the cavity, it displaces the water and cures to a rigid high strength material.
- Suitable for dry, damp, wet and underwater conditions
- High early strength
- Shrinkage free hardening
Usage
High strength grouting and fixing of:
- Starter bars
- Anchors
- Fasteners
- Tie rods
- Crash barrier posts
- Fence and railing posts
Under-grouting and bedding of:
- Precision seating of base plates
- Machine bases, seat base plates for light and heavy machinery including heavy impact and vibratory machinery, reciprocating engines, compressors, pumps, presses, etc.
- Bridge bearings
- Mechanical joints (i.e. road, bridge, deck etc.)
- Crane rails
- Ballast less rail tracks
Concrete repairs:
- Spalled concrete structures
- Industrial floors
- Holes and voids
- Runways and hardstanding's
- Car park decks
- Under water applications in dams and hydraulic structures
Packaging
Part A+B+C pre-batched | 11 kg set |
| Part A | 2 kg container |
| Part B | 1 kg container |
| Part C | 8 kg bag |
Advantages
- Suitable for dry, damp, wet and underwater conditions
- High early strength
- 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
- Easy to apply
- Free flowing
Colour
Brown Liquid
Product Details
Chemical base
Epoxy resin and selected fillers and aggregates
Shelf life
12 months from date of production
Storage conditions
The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +40 °C. Protect from direct sunlight.
Compressive strength
| Curing time | Compressive strength |
3 h | ≥ 20 N/mm2 |
6 h | ≥ 40 N/mm2 |
| 1 d | ≥ 60 N/mm2 |
| 7 d | ≥ 80 N/mm2 |
Test specimens cured at +30 °C under water
Tensile adhesion strength
| > 10 N/mm2 | (ASTM C882) |
Test specimens cured at +30 °C under water
Application
Mixing ratio
Part A : Part B : Part C = 2 : 1 : 8 (by weight)
Fresh mortar density
1.9 ± 0.1 kg/L (Part A+B+C mixed, +27 °C) | (EN ISO 2811-1)
|
Layer thickness
Maximum | 50 mm per layer |
Minimum | 10 mm |
Additional layer thickness can be applied in successive layers once each layer has cooled and hardened sufficiently. The last layer of a multiple pour must be at least 50 mm.
Product temperature
Condition the material between +10 °C and +30 °C for 48 hours before use.
Ambient air temperature
+10 °C min. / +40 °C max.
Dew point
Beware of condensation.
The substrate and uncured applied product must be at least +3 °C above dew point to reduce the risk of condensation.
Substrate temperature
+10 °C min. / +40 °C max.
Pot life
> 20 minutes (100 g mass, +30 °C) | (FIP 5.1) |
Pot life begins when all parts have been 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, chill parts A+B before mixing (i.e. only when application temperatures are above +20 °C).
SUBSTRATE QUALITY
Concrete
- Concrete must be at least 3–6 weeks old and of sufficient strength.
- Substrate surfaces must be sound, clean, dry, wet or damp, 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
SUBSTRATE PREPARATION
Concrete
- Substrate must be prepared by suitable mechanical preparation i.e. very high pressure water blasting, needle gun, scabbler or bush hammer to achieve a laitance and contaminant free, open textured surface.
- Any pockets or holes for structural fixings must also be cleaned of all debris.
- All anchor pockets or sleeves must be free of water.
- All dust and loose material must be completely removed from all substrate surfaces before application of the product by vacuum / dust removal equipment.
Steel
- Substrate must be prepared by suitable mechanical preparation i.e. abrasive blast cleaning techniques or high pressure water blasting, angle grinder or chisel to achieve a bright finish or to a standard equivalent to SA 2.5. Avoid dew point conditions.
- When grouting areas or equipment that is sensitive to vibration, it is recommended the contact surfaces are prepared according to the advise of Sika Technical Services or engineer-incharge.
- All dust and loose material must be completely removed from all substrate surfaces before application of the product by vacuum / dust removal equipment.
Shutter Formwork
- The consistency of the Sikadur®-53 UF Grout epoxy grout system requires the use of permanent or temporary forms to contain the material around base plates. All formwork must be of adequate strength, treated with release agent and sealed to prevent leakage.
- Prepare the formwork to maintain a minimum 100 mm grout head to assist with placement. A grout box equipped with an inclined trough attached to the formwork will also improve the grout flow and reduce air voids.
MIXING
- Mix parts A and B in the part A container for ~60 seconds with a low speed (< 400 rpm) electric hand held paddle mixer until a uniformly blended colour and viscosity has been achieved.
- During the mixing operation, scrape down the sides and bottom of the mixing pail with a flat or straight edge trowel at least once, to ensure complete mixing of parts A and B. Avoid air entrainment while mixing.
- Place the mixed epoxy resin into a clean container.
- Slowly add the contents of part C and continue mixing for at least 3 minutes until a uniformly coloured consistent mix has been achieved. Over mixing must be avoided to minimise air entrainment. Mix full units only. Mixing time for A+B+C = 4 minutes.
- After mixing, allow material to remain in the mixing container until the majority of entrained air bubbles have disappeared.
Note: Mix only the quantity which can be used within its pot life.
Note: Always mix part A and B by adding part C (this prevents an exothermic reaction between A and B which generates excess heat).
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Colma Cleaner immediately after use. Hardened material can only be removed mechanically.