Sika® Concrete Fix
Sika® Concrete Fix is a 2-component, 100% solids, moisture-tolerant, high-modulus, high-strength, structural, smooth-paste epoxy adhesive. (Sika® Concrete Fix is also known as Sikadur-33)
- Can be used on damp concrete
- Excellent adhesion to the substrate
- Non-sag, also overhead
- High load capacity
- Shrinkage-free hardening
- Styrene-free
- Convenient easy mix ratio A : B = 1 : 1 by volume
Usage
As a structural adhesive for:- Concrete elements
- Hard natural stone
- Ceramics, fibre cement
- Mortar, Bricks, Blocks, Masonry, render etc.
- Steel, Iron, Aluminium
- Wood
- Polyester, Epoxy
Interior, vertical and overhead repair of:
- Corners and edges
- Hole and void filling
- Joint arrises
- Crack filling and sealing (non moving)
- Fixing and fastening of handrails, railings, balustrades and supports
- Fixing of window and door frames
- Concrete
- Hard natural stone
- Solid rock
- Hollow and solid masonry
- Steel
- Wood
Advantages
- Can be used on damp concrete
- Excellent adhesion to the substrate
- Non-sag, also overhead
- High load capacity
- Shrinkage-free hardening
- Styrene-free
- Convenient easy mix ratio A : B = 1 : 1 by volume
Packaging
1 litre kit
Colour
Concrete grey
Product Details
APPROVALS / CERTIFICATES
AS4020:2018 approved for use in potable Water applications.
Composition
Epoxy resin
Shelf life
24 months from date of production
Storage conditions
Store in original, unopened, sealed and undamaged packaging in dry conditions at temperatures between +5 °C and +30 °C. Protect from direct sunlight.
Density
1.35 kg/litre (part A+B mixed)
Consistency
Smooth-paste adhesive
Compressive strength
~ 50 N/mm2 (14 days + 23oC)
Tensile strength
10-15 MPa (14 days at +23 oC)
Tensile adhesion strength
| Time | Substrate | Bond Strength |
| After 3 days | Dry Concrete | > 5 N/mm2 * |
| After 3 days | Damp Concrete | > 5 N/mm2 * |
| After 3 days | Steel Blast cleaned | > 10 N/mm2 |
| After 3 days | Brick Dry | > 1.5 N/mm2 ** |
* 100% concrete failure
** 100% brick failure
Coefficient of thermal expansion
| 9.3x10-5 per oC (Temp. range +23 oC - +60 oC) | (EN 1770) |
Heat deflection temperature
| +49 oC (7 days at +23oC) | (EN 12614) |
Application
Mixing ratio
A : B = 1 : 1 by volume
Layer thickness
0.5mm min. / 10mm max.
Ambient air temperature
+10 °C min. / +35 °C max.
Relative air humidity
85% max. (at +25 °C)
Dew point
Avoid condensation during dew point conditions.
Substrate temperature during application must be at least 3°C above dew point.
Substrate temperature
+10 °C min. / +35 °C max.
Substrate moisture content
Can be damp but not “wet”. No free standing water during application and curing.
Pot Life
60 minutes (+23 oC)
Curing time
| Temperature | Open Time | Curing Time |
| +10 oC | 210 minutes | 3 days * |
| +20 oC | 90 minutes | 2 days * |
| +35 oC | 45 minutes | 1 day * |
* To achieve approx. 80% of the performance
Consumption
1 litre/m2 per mm of thickness
SUBSTRATE QUALITY
Mortar and concrete must be older than 28 days.
Adequate substrate strength (concrete, masonry, natural stone) must always be confirmed.
SUBSTRATE PREPARATION
Surface must be clean and sound. It may be dry or damp, but free from standing water. Remove dust, laitance, grease, curing compounds, impregnations, waxes and any other contaminants.
Preparation Work
Concrete, natural stone, cement mortar and render:
Clean, free from oils and grease, no loose or friable particles, no cement laitance.
Age of concrete 3 to 6 weeks (dependent on mix design and environment). Preparation: Blastcleaning or grinding.
Construction steel 37, V2 A steel: Free from oil, grease, rust or mill scale. Preparation: Blastcleaning or grinding. Avoid dew point conditions. If prepared steel is not to be used immediately, its surface must be coated with Sikagard®-62 to protect it.
Polyester, epoxy, ceramics:
Free from oils and grease. Polyester epoxy: Grind, using coarse abrasive.
Glass, ceramics: Grinding, do not apply to siliconised substrates.
MIXING
Pre-mix each component. Proportion equal parts by volume of Component ‘B’ and Component ‘A’ into a clean pail. Mix thoroughly for 3 minutes with Sika paddle on low speed (400-600 rpm) drill until uniform in colour. Mix only the quantity that can be used within its potlife.
CLEANING OF EQUIPMENT
Uncured material may be cleaned from application tools, etc. by using Sika Colma Cleaner (flammable solvent). Cured material can only be removed mechanically.