Epoxy Adhesive for Bonding Durajoint Flexband Membrane

dura.®joint flexband adhesive is a two component, solvent free epoxy resin bedding mortar/adhesive with low slump characteristics. The product has particularly high adhesive characteristics and will cure under damp conditions.

FDA Compliance: dura.®joint flexband adhesive epoxy system components have been selected to be used in accordance with CFR Title 21, 175.105 regulation.

Uses

Specifically developed for bonding dura.®joint flexband polymer membrane to prepared concrete surfaces and itself. As a bedding mortar and adhesive. Repairs where non-slump characteristics is a requirement up to 10 mm thickness. 

dura.®joint flexband adhesive can be applied in sections up to 20 mm thickness in horizontal locations and 10 mm in vertical locations in a single application without the use of formwork. Greater thickness can be achieved by the application of subsequent layers. Consult the local a.b.e.® office for further information. 

Advantages
  • Early high strength and therefore minimizes down time 
  • High peel strengths to membrane 
  • Good resistance to a wide range of chemicals 
  • Good adhesion to damp concrete 
  • High solvent resistance
Surface Preparation

Concrete: Cleaning of the surface to be repaired is best achieved with a light sand, grit blasting, and/or scabbling to remove all loose material, contaminants such as oil, grease, corrosion products or any other deleterious materials, followed by vacuuming. Any corroded, exposed steel must be cleaned in a bright finish (shot blasting) and concrete cut back behind the steel to fully expose the back of the bars. 

dura.®joint flexband membrane: Wipe surfaces prior to bonding with dura.®joint flexband solvent wipe and allow to dry. See data sheet `Preparation of Surfaces’. 

Typical Properties of Wet Material

Mix ratio B:A 

100:116.5 by weight 

Density (mixed) 

1.918 

Colour: 

Base 

Activator 

Mixed material 

Off white 

Black 

Grey 

Fire resistance 

Non-flammable 

Consistency 

Each component is a heavy paste 

Equipment clean up 

abe® super brush cleaner 

Typical Properties during Application

Pot Life 

1 – 2 hours 

Volume Solids 

100% 

Theoretical coverage per mm 

1m2/ℓ (smooth level surface) 

Practical cure 

24 hours 

Full cure 

7 days 

Application temperature range 

10ºC – 35 ºC 

Typical Properties of Cured Material

Compressive 

> 80 MPa strength @ 7 days ASTM C109 

Flexural strength 

> 7 MPa @ 7 days 

Tensile strength 

> 10 MPa(ASTM C 307) @ 7 days 

Chemical Properties of Cured Film

Water resistance 

Excellent 

Toluene 

Good 

Ethanol 

Moderate 

10% Acetic acid 

Limited 

70% Sulphuric acid 

Good 

50% Sodium hydroxide 

Excellent 

Bonding / Priming

Priming is not normally required on well prepared porous substrates. Where steel is exposed the cleaned steel should be coated within 3 hours. Apply one full and continuous coat of abe.®cote 384 primer and allow to dry before continuing. 

Mixing

dura.®joint flexband adhesive is suitable for hand mixing on a flat clean surface (wear gloves). dura.®joint flexband adhesive components are heavy pastes and should be mixed in manageable amounts (2ℓ kits) to ensure homogeneity once mixed. Uniformity in colour is an indication of homogeneity. Set up prescribed amounts (do not split kit) of base and activator side by side on a clean board. Mix together by trowel or paint scraper until a streak-free, grey material results. Mixing should be continued for another 5 minutes. 

Coverage

1 m2/ litre / 1mm thickness (smooth regular surface).

Application

In the case of expansion joints or cracks, follow the method statement: “dura.®joint flexband application process”. 

NOTE: Ensure intimate contact between adhesive and adherands during the “hardening process” by using flat sections of laminated timber as a light weight.

Limitations

Do not split the kit – use as supplied. Do not use at temperatures below +5°C or above 35°C. 

Cleaning of Equipment

Tools may be cleaned with abe® super brush cleaner immediately after use before the material has had time to cure.

Model Specification

Two-component, solvent-free epoxy resin bedding mortar/ adhesive with low slump characteristics. The mortar /adhesive will be dura.®joint flexband adhesive, a two component, solvent-free epoxy resin system applied in accordance with the recommendations of a.b.e.® Construction Chemicals.

Packaging

dura.®joint flexband adhesive is supplied in 2ℓ containers. 

Handling & Storage

This product has a shelf life of 12 months if kept in a dry cool place in the original packaging. In more extreme conditions this period might be shortened.

Health & Safety

Product safety information required for safe use is not included. Before handling, read product and safety data sheets and container labels for safe use, physical and health hazard information. The safety data sheet is available from your local a.b.e.® Construction Chemicals sales representative.

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.