Product Data Sheet Show all documents
Sika® Concrete Fix

Sika® Concrete Fix

High Modulus, High-Strength, Structural, Rapid Curing Epoxy, Smooth-Paste Adhesive

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
Product Data Sheet Show all documents

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
For concrete repairs
Interior, vertical and overhead repair of:
  • Corners and edges
  • Hole and void filling
  • Joint arrises
Joint filling and crack sealing:
  • Crack filling and sealing (non moving)
  Metalwork, carpentry:
  • Fixing and fastening of handrails, railings, balustrades and supports
  • Fixing of window and door frames
For use in the following:
  • 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

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

AS4020:2018 approved for use in potable Water applications.
Product Information

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
Technical Information

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 daysBrick 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

Application Information

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

Consumption

1 litre/m2 per mm of thickness
Application steps

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.

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