Structural dry-To-dry epoxy adhesive

Two-component, solvent-free, filled, polysulphide modified epoxy compound.

Uses
  • Structural bonding of precast concrete, brickwork, steel, aluminium elements to themselves and in any combination. 
  • Bonding of fibre cement and unglazed ceramic to most structural materials. Suitable where gap-filling properties as well as adhesion are required. 

Note: Bonded concrete assemblies should always be used in such a way that there is a compressive stress permanently on the bond line.

Advantages
  • Structural adhesive for most building materials. 
  • Use as a gap filler. 
  • Non-slump. 
  • High ultimate strengths. 
  • Non-shrink. 
  • Mixing control with coloured components.
Surface Preparation

The concrete surfaces must be clean, mechanically sound and dry. Surfaces must be free of dust, laitance and any foreign matter as well as cracked or loose stone. Maximum bond strength is only achieved if main aggregate of existing concrete is exposed. This may be done by scabbling, grinding, abrasive blasting or manual chipping. All cracked and loose aggregate must be removed. Steel must be degreased and abrasive blast cleaned to a minimum of Sa 2,5 on the Swedish Code of Practice SIS 055900. 

Aluminium must be abraded with medium grit emery paper and washed with abe® thinners no. 3 to degrease the surface and remove all debris of preparation. Apply adhesive as soon as possible after solvent application, to reduce re-oxidation of metal surface. 

Properties of Wet Material

Mixing ratio 

2 base: 1 activator by volume 

Density 

1.29 g/cm3 

Colour 

Base: Black Activator: White Mixed: Blue – Grey 

Flash point 

100°C 

Dilution 

Do not dilute 

Consistency 

Paste 

Toxicity 

Uncured material is toxic 

Shelf life 

2 years from date of manufacture 

Storage conditions 

Under cover in cool conditions 

Packaging 

500ml, 1L, 2L 

Properties During Application

 Application by 

Trowel or putty knife 

Application temperature 

10°C to 40°C 

Spreading rate 

1 litre/m2 @ 1mm thickness 

Recommended wet film thickness 

5mm maximum 

Volume solids 

100% 

Practical cure 

5 days 

Full cure 

14 days 

Fire resistance of wet material 

Non-flammable 

Properties of Cured Material

Toxicity 

Cured material is non-toxic 

Maximum service temperature 

60ºC 

Compressive yield strength 

75.1 MPa 

Tensile strength 

22.2 MPa 

Bond strength in concrete 

Bonded assembly fails in concrete Arizona Shear Test using +60 MPa concrete 

Colour 

Grey 

Steel/steel lap shear 

11 MPa 

Keep bond line to minimum thickness 

Pot Life (Minutes)

500ml 

1L kit 

2L kit 

15ºC 

120 

100 

80 

20ºC 

90 

75 

60 

25ºC 

60 

50 

40 

30ºC 

45 

37 

30 

35ºC 

30 

25 

20 

 

CURE PERIOD 

LAP SHEAR STRENGTH – MPA 

DAYS 

10ºC 

15ºC 

25ºC 

0.1 

13.3 

10.6 

14 

11.8 

11.8 

12.2 

28 

9.4 

12.2 

11.9 

Bonding / Priming

Self Priming.

Mixing

Always carry out mixing in coolest area available. 

Individually stir the contents well of each container. If using an entire kit, remove the lip from both containers using a tin opener. Remove all or the required amount of base and activator from the containers and place them side by side on a clean board or steel plate. 

Mix together by using trowels or paint scrapers, until a streak-free, grey material results. This is likely to require at least 5 minutes. Remove mixed material to a clean board prior to placing, to obviate the chance of picking up any unmixed material.

Coverage

1L/m2 at 1mm thick.

Application

Apply mixed epidermix 350 to one working face, placing material in such a fashion that the highest point of the application is in the centre and no depressions exist in the surface of the compound. 

Mate the other face to be bonded in the wet adhesive mound so that material extrudes all around the bonded assembly. Scrape extruded material off with a clean spatula off to obtain a neat finish. If an extremely neat finish is required masking tape may be used. Any bonded joint must be kept under full compression for at least 5 days.

Cleaning

Tools, brushes and mixing equipment should be cleaned immediately after use and before material has set with abe® super brush cleaner followed by washing with soap and water.

Protection on Completion

Maintain compression on bonded surfaces until cured. Compression must be maintained permanently for concrete assemblies.

Model Specification

Two component, polysulphide modified, dry to dry, structural epoxy adhesive for precast concrete, steel and brickwork in any combination.The structural adhesive shall be epidermix 350, a two component, solvent free, polysulphide modified, dry to dry epoxy adhesive applied in accordance with the recommendations of a.b.e.® Construction Chemicals and have a steel/steel lap shear strength of 11 MPa.

Packaging

epidermix 350 is supplied in 500ml, 1 litre and 2 litre metal containers. 

Handling & Storage

This product has a shelf life of 24 months if kept in a dry cool place in the original packaging. In more extreme conditions this period might be shortened.

Health & Safety

Wet epidermix 350 is toxic and flammable. Always ventilate the working area well during application and drying. Avoid flames in vicinity. Always wear gloves and eye protection when working with the material and avoid excessive inhalation and skin contact. If material is splashed in the eye, wash with copious quantities of clean water and seek medical attention. 

Cured epidermix 350 is inert and harmless. 

Important Notice

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicals endeavors to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® has no direct or continuous control over where and how a.b.e.® products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® products, whether or not in accordance with any advice, specification, recommendation, or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. a.b.e.® Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.