Sikadur-33, High-performance adhesive for structural repairs, Interior & Exterior, Mixed Grey

Category: Cement & Mortar

SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

Packing
- 250 mL
- 400 mL

This combination does not exist.

High-performance epoxy adhesive for structural bonding

Sikadur-33 is a thixotropic 2-part epoxy structural adhesive supplied in a cartridge.

Good adhesion to damp concrete surfaces.
Very good adhesion to many construction materials.
Thixotropic: non-sag in vertical and overhead applications.
Very good load capacity.
Hardens without shrinkage.
Styrene-free.
EPD available.

Usage

The Product is used as a structural adhesive for:

Concrete.
Hard natural stone.
Ceramics.
Fibre cement.
Mortar.
Brick masonry.
Hollow and solid masonry.
Steel.
Iron.
Wood.

The Product is used for small concrete repairs such as:

Corners and edges.
Hole and void filling.
Joint arrises.

Joint filing and crack sealing:

Static crack filling and sealing.
Handrails, balustrades and supports.
Window frames, door frames, and windowsills.

Advantages

Good adhesion to damp concrete surfaces.
Very good adhesion to many construction materials.
Thixotropic: non-sag in vertical and overhead applications.
Very good load capacity.
Hardens without shrinkage.
Styrene-free.
EPD available.

Packaging

250 ml cartridge	Box of 12 × 250 ml
400 ml side-by-side cartridge	Box of 12 × 400 ml

Refer to the current price list for available packaging variations.

Colour

Part A	White
Part B	Grey
Part A+B mixed	Grey

Technical Information

Compressive Strength

Cured 14 days at +23 °C

50 N/mm²

Flexural Strength

Cured 14 days at +23 °C

20 N/mm²

Tensile Strength

Cured 14 days at +23 °C

13 N/mm²

Tensile adhesion strength

Curing Time	Substrate	Adhesion strength
3 days	Concrete dry	> 5 N/mm² (100 % concrete failure)
3 days	Concrete moist	> 5 N/mm² (100 % concrete failure)
3 days	Steel sandblasted	> 10 N/mm²
3 days	Brick dry	> 1.5 N/mm² (100 % brick failure)

Shrinkage

Hardens without shrinkage

Coefficient of Thermal Expansion

9.3 × 10^-5 1/K

Linear expansion between +23 °C and +60 °C

(EN 1770)

Glass transition temperature

Cured 7 days at +23 °C

+49 °C

Application Information

Mixing Ratio

Part A : Part B

1 : 1 by volume

Layer Thickness

Maximum	10 mm
Minimum	0.5 mm

Sag Flow

Non-sag, suitable for overhead application

Product Temperature

Maximum	+35 °C
Minimum	+10 °C

Ambient Air Temperature

Maximum	+35 °C
Minimum	+10 °C

Relative Air Humidity

Maximum at +25 °C

85 %

Dew Point

Beware of condensation. Substrate temperature during application must be at least +3 °C above dew point.

Substrate Temperature

Maximum	+35 °C
Minimum	+10 °C

Substrate Moisture Content

Substrates must be dry or matt damp (no standing water).

Pot Life

Tested at +23 °C

60 minutes

Open Time

Temperature	Open Time
+10 °C	210 minutes
+20 °C	90 minutes
+35 °C	45 minutes

Minimum cartridge temperature +10 °C

Curing Time

Temperature	Curing Time
+10 °C	3 days (80 % of performance)
+20 °C	2 days (80 % of performance)
+35 °C	1 day (80 % of performance)

Minimum cartridge temperature +10 °C

The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.

Contact our sales team for other specifications or custom made products.

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General Specifications
Packaging	250 mL
Usage	Structural adhesive for concrete, stone, ceramics, masonry, steel, wood; small concrete repairs
Usage Area	Interior & Exterior
Color	Mixed Grey
Chemical Base	Epoxy resin
Storage Conditions	+10 °C to +30 °C - Store in original, unopened, undamaged packaging in dry conditions. Always refer to packaging
Density	1.35 kg/L
Application Thickness	0.5 mm >< 10 mm
Ambient Air Temperature	+10°C >< +35°C
Substrate Temperature	+10°C >< +35°C
Working time	60 minutes
Waiting Time	60 minutes
Consumption	N/A

High-performance epoxy adhesive for structural bonding

Sikadur-33 is a thixotropic 2-part epoxy structural adhesive supplied in a cartridge.

Good adhesion to damp concrete surfaces.
Very good adhesion to many construction materials.
Thixotropic: non-sag in vertical and overhead applications.
Very good load capacity.
Hardens without shrinkage.
Styrene-free.
EPD available.

Usage

The Product is used as a structural adhesive for:

Concrete.
Hard natural stone.
Ceramics.
Fibre cement.
Mortar.
Brick masonry.
Hollow and solid masonry.
Steel.
Iron.
Wood.

The Product is used for small concrete repairs such as:

Corners and edges.
Hole and void filling.
Joint arrises.

Joint filing and crack sealing:

Static crack filling and sealing.
Handrails, balustrades and supports.
Window frames, door frames, and windowsills.

Advantages

Good adhesion to damp concrete surfaces.
Very good adhesion to many construction materials.
Thixotropic: non-sag in vertical and overhead applications.
Very good load capacity.
Hardens without shrinkage.
Styrene-free.
EPD available.

Packaging

250 ml cartridge	Box of 12 × 250 ml
400 ml side-by-side cartridge	Box of 12 × 400 ml

Refer to the current price list for available packaging variations.

Colour

Part A	White
Part B	Grey
Part A+B mixed	Grey

Technical Information

Compressive Strength

Cured 14 days at +23 °C

50 N/mm²

Flexural Strength

Cured 14 days at +23 °C

20 N/mm²

Tensile Strength

Cured 14 days at +23 °C

13 N/mm²

Tensile adhesion strength

Curing Time	Substrate	Adhesion strength
3 days	Concrete dry	> 5 N/mm² (100 % concrete failure)
3 days	Concrete moist	> 5 N/mm² (100 % concrete failure)
3 days	Steel sandblasted	> 10 N/mm²
3 days	Brick dry	> 1.5 N/mm² (100 % brick failure)

Shrinkage

Hardens without shrinkage

Coefficient of Thermal Expansion

9.3 × 10^-5 1/K

Linear expansion between +23 °C and +60 °C

(EN 1770)

Glass transition temperature

Cured 7 days at +23 °C

+49 °C

Application Information

Mixing Ratio

Part A : Part B

1 : 1 by volume

Layer Thickness

Maximum	10 mm
Minimum	0.5 mm

Sag Flow

Non-sag, suitable for overhead application

Product Temperature

Maximum	+35 °C
Minimum	+10 °C

Ambient Air Temperature

Maximum	+35 °C
Minimum	+10 °C

Relative Air Humidity

Maximum at +25 °C

85 %

Dew Point

Beware of condensation. Substrate temperature during application must be at least +3 °C above dew point.

Substrate Temperature

Maximum	+35 °C
Minimum	+10 °C

Substrate Moisture Content

Substrates must be dry or matt damp (no standing water).

Pot Life

Tested at +23 °C

60 minutes

Open Time

Temperature	Open Time
+10 °C	210 minutes
+20 °C	90 minutes
+35 °C	45 minutes

Minimum cartridge temperature +10 °C

Curing Time

Temperature	Curing Time
+10 °C	3 days (80 % of performance)
+20 °C	2 days (80 % of performance)
+35 °C	1 day (80 % of performance)

Minimum cartridge temperature +10 °C