Sikadur®-42 LP
3-PART, MULTI PURPOSE EPOXY GROUTING SYSTEM
Sikadur®-42 LP is a three-component, multipurpose, moisture tolerant, epoxy grouting system. For use at temperatures between +20°C and +40°C. Suitable for use in hot and tropical climatic conditions.
- Ready-to-mix, pre-batched units
- Moisture tolerant
- Non-shrink
- Corrosion and chemically resistant
- Stress and impact resistant
- High compressive strength
- High vibration resistance
Usage
High-strength grouting and fixing of:- Starter bars
- Anchors
- Fasteners
- Tie rods
- Crash barrier posts
- Fence and railing posts
- Base plates
- Machine bases,
- Bridge bearings
- Mechanical joints (i.e. road/bridge/deck types etc.)
- Crane tracks
- Light rail and permanent way in tunnels
- Light rail and permanent way over bridges
Advantages
- Ready-to-mix, pre-batched units
- Moisture tolerant
- Non-shrink
- Corrosion and chemically resistant
- Stress and impact resistant
- High compressive strength
- High vibration resistance
Packaging
- Pre-batched unit: 10 kg (A + B +C)
- Pre-batched unit: 20 kg (A + B +C)
Product Details
Composition
Epoxy resin
Shelf life
24 months from date of production
Storage conditions
Stored properly in original, unopened, sealed and undamaged packaging in dry conditions at temperatures between +5°C and +30°C. Protect from direct sunlight, heat and moisture.
Density
~2.0 kg/l (mixed material, at 23°C)
Compressive strength
Curing time | Curing temperature (23°C) |
1 day | ~45 N/mm2 |
3 days | ~67 N/mm2 |
7 days | ~77 N/mm2 |
14 days | ~83 N/mm2 |
28 days | ~85 N/mm2 |
Product cured and tested at temperatures indicated.
Test specimen size: 50 * 50 * 50 mm
Flexural-strength
Curing time | Curing temperature (23°C) |
1 day | ~30 N/mm2 |
3 days | ~34 N/mm2 |
7 days | ~39 N/mm2 |
14 days | ~41 N/mm2 |
28 days | ~42 N/mm2 |
Application
Layer thickness
Minimum grout depth: 6 mm
Maximum grout depth: 60 mm
Note: no reduction of fillers allowed
Ambient air temperature
+20°C min. / +40°C max.
Mixing ratio
Component A : B : C = 2 : 1 : 12 by weight
Solid / liquid = 4 : 1 by weight
Dew point
Substrate temperature during application must be at least 3 °C above dew point to avoid condensation.
Substrate temperature
+20°C min. / +40°C max.
Substrate moisture content
≤ 4 % pbw
Pot Life
(200 g, adiabatic testing)
A : B : C | +20°C | +40°C |
2 : 1 : 12 | ~120 min | ~40 min |
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 components A + B and C before mixing them (that is only when application temperatures are above +20 °C).
Consumption
~2.0 kg/m2/mm
This figure is theoretical and does not include for any additional material required due to surface porosity, surface profile, variations in level or wastage etc.
SUBSTRATE QUALITY
Mortar and concrete must be older than 28 days (dependent on minimum strength requirements).
Verify the substrate strength (concrete, natural stone etc.).
The substrate surface (all types) must be clean, rough, dry and free from contaminants such as dirt, oil, grease, existing surface treatments and coatings etc.
Steel substrates must be de-rusted to a standard equivalent to Sa 2.5.
The substrate must be sound and all loose particles must be removed.
Substrate must be dry or mat damp and free from any standing water, ice etc.
SUBSTRATE PREPARATION
Concrete, mortar, stone:
Substrates must be sound, dry, rough, clean and free from laitance, ice, standing water, 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 standard equivalent to SA 2.5 that is by blastcleaning and vacuum. Avoid dew point conditions.
Surface and base plate contact area must be clean and sound. For best results, the substrate shall be dry. Remove dust, laitance, oils, grease, curing compounds, impregnations, waxes, foreign particles, coatings, and disintegrated materials by mechanical means, that is chipping with a chisel, blastcleaning etc.
All anchor pockets or sleeves must be free of water.
Apply grout immediately to prevent re-oxidizing / rust formation.
MIXING
Pre-batched units:
Mix components A and B in the component A pail for approximately 30 - 60 seconds with a paddle attached to a low speed drill (300 – 450 rpm). Avoid aeration while mixing until the material becomes uniformly blended in colour and viscosity. Place the mixed epoxy into an appropriate mixing vessel. Slowly add the contents of component C (to keep air entrapment at a minimum) dependent on flow requirements (observe the correct mixing ratio) mix until uniform and homogeneous appearance achieved (approximately 3 minutes). Mix only that quantity which can be used within its potlife.
CLEANING OF EQUIPMENT
Sweep excess grout into appropriate containers for disposal before it has hardened.
Dispose of in accordance with applicable local regulations.
Uncured material can be removed with Sika Colma Cleaner. Cured material can only be removed mechanically.