Sikadur®-53 UF Mortar
Moisture insensitive epoxy resin mortar
Sikadur®-53 UF Mortar is a solvent free, three-component moisture insensitive, epoxy resin based mortar. It has been developed to meet special requirement of concrete repair particularly in damp, wet condition. After mixing, the mortar is placed on moist concrete and it cures to form a rigid and high strength material.
- High early strength
- Cures without shrinkage
- Excellent adhesion to cement substrate even under salt water
Usage
Sikadur®-53 UF Mortar is used for:
- For repair of damp and wet concrete
- For rapid installation and repair
Packaging
Part A+B+C Pre-batched unit | 10.5 kg x 4 sets |
| Part A | 1.00 kg plastic container |
Part B | 0.50 kg plastic container |
Part C | 9.00 kg bag |
Advantages
- High early strength
- Cures without shrinkage
- Excellent adhesion to cement substrate even under salt water
Colour
Part A | Clear |
| Part B | Reddish Yellow |
Part C | Sand |
Part A+B+C mixed | Reddish Yellow mortar |
Product Details
Chemical Base
Epoxy resin
Shelf Life
12 months from date of production
Storage Conditions
Store properly in original unopened, sealed and undamaged packaging, in dry conditions at temperatures between +5°C and +40°C. Protect from direct sunshine.
Density
Part A+B+C Mixed : 2.1 ± 0.1 kg/L (at +27°C)
Compressive Strength
3 hours | ≥ 20 N/mm2 |
| 6 hours | ≥ 25 N/mm2 |
1 day | ≥ 35 N/mm2 |
7 days | ≥ 60 N/mm2 |
At curing temperature +30°C
Tensile Strength in Flexure
1 day | 15 N/mm2 |
7 days | 16.5 N/mm2 |
Curing Temperature at +30° C
Tensile Strength
10.2 N/mm2 (after 7 days at +30° C) | (ISO 527-2) |
Tensile Adhesion Strength
14 days | Dry concrete | ≥ 4 N/mm2 |
14 days | Moist concrete | ≥ 4 N/mm2 |
At curing temperature +30°C, 100% Concrete failure
Heat Deflection Temperature
+47°C (7 days / +30°C) | (ASTM D648) |
Application
Mixing Ratio
Part A : Part B : Part C = 2 : 1 : 18 (by weight)
Layer Thickness
60 mm max.
When using multiple units, one after the other. Do not mix the following unit until the previous one has been used in order to avoid a reduction in handling time.
Flowability
Sag Flow : Non-sag upto 20mm thickness on vertical surface
Product Temperature
+10°C min. / +40°C max.
Ambient Air Temperature
+5°C min. / +40°C max
Substrate Temperature
+5°C min. / +40°C max
Pot Life
~ 20 minutes (100 g mass at +27°C) | (FIP 5.1)
|
The potlife begins when the resin and hardener are mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the potlife. To obtain longer workability at high temperatures, the mixed adhesive may be divided into portions. Another method is to chill parts A+B and C before mixing them (not below +5°C).
Consumption
~2.1 kg/m2 per mm of thickness.
SUBSTRATE QUALITY
Verify the substrate strength (concrete, masonry, natural stone).
The substrate surface (all types) must be clean and free from contaminants such as dirt, oil, grease, existing surface treatments and coatings etc.
Steel substrates must be de-rusted similar to Sa 2.5.
The substrate must be sound and all loose particles must be removed.
SUBSTRATE PREPARATION
Concrete / masonry / mortar / stone
Substrates must be sound, clean and free from laitance, grease, oils, old surface treatments or coatings and all loose or friable particles must be removed to achieve a laitance and contaminant free, open textured surface.
Steel
Must be cleaned and prepared thoroughly to an acceptable quality i.e. by blast cleaning and vacuum. Avoid dew point conditions.
Other surfaces (polyester, epoxy, glass, ceramic)
On these substrates pre-apply Sikadur®-31 and then, “wet on wet” apply Sikadur®-53 UF Mortar.
MIXING
Mix parts A+B together for at least 3 minutes with a mixing spindle attached to a slow speed electric drill (max. 600 rpm) until the material becomes smooth in consistency and a uniform colour. Then add part C and continue until mixture is homogeneous. Avoid aeration while
mixing. The, pour the whole mix into a clean container and stir again for 1 more minute at low speed to keep air entrapment at a minimum. Mix only that quantity which can be used within its potlife.
CLEANING OF TOOLS
Clean all tools and application equipment with Sika® Colma Cleaner immediately after use. Hardened / cured material can only be mechanically removed.