FEATURES

• Water Based Epoxy Bonding Bridge
• Penetrating Structural Sealer
• Forms a structural bond between new and old concrete
• Can be applied to damp surfaces
• Compatible with fresh cement or concrete products
• Excellent adhesion to most substrates

FEATURES/BENEFITS

A relatively high solids product specifically designed as a high strength bonding bridge for bonding new render or concrete to aged concrete substrates. AT 109 C is also used as an epoxy admixture for cemetitious products used for concrete repair. When thinned 50% with water it forms a structural penetrating sealer.
- Forms a structural bond between new and old concrete.
- Can be applied to damp surfaces.
- Is compatible with fresh cement or concrete products.
- Has excellent adhesion to most substrates including brick, masonry, concrete block, concrete, compressed fibreboard, stone and timber.

TYPICAL APPLICATIONS

- As a new to old concrete bonding bridge to substantially improve the bonding characteristics.
- As an admixture to cement to produce variable strength repair mortars and waterproofing grouting material.
- As a concrete curing membrane to contain the water and as an aid to the curing of and sealing of concrete.

LIMITATIONS

The product should be applied whilst the surface temperature is between 10° - 35°C. The product will cease to cure below 10°C, but will recommence curing when the temperature rises above 10°C. Curing time will also be adversely affected in situations where relative humidity is > 85%.

Good ventilation should be provided during curing cycle.Will turn yellow when exposed to ultra violet light for extended periods.

The cured coating will form a glazed chemically resistant surface finish which must be well sanded to produce a course surface profile prior to adhering any product to the cured film. When used as a penetrative sealer the surface may darken slightly with age.

BASIC APPLICATIONS INSTRUCTIONS

Surface Preparation
All surfaces to be treated must be structurally sound, all previous coatings should be removed and the surface cleaned free from contaminants.

Installation
Each component should be individually mixed to form homogeneous components. Thoroughly mix the two components in the ratio of 1:1 by volume, preferably using a power stirrer, until a homogeneous mix is obtained. Only mix as much as be used within the pot life of the product and avoid excessive aeration during mixing.

Application as a New To Old Concrete Bridge
Apply one coat by brush, roller or spray to a section of the area to be treated at a coverage rate of 7 square metres per litre. Only apply the Bonding Bridge to an area to which the new render or concrete can be placed while the bonding bridge remains wet or tacky.

TECHNICAL DATA

SAFETY PRECAUTIONS

AT 109 C Part A and Part B are hazardous goods and may cause sensitization by skin contact. They are harmful by inhalation, in contact with skin and if swallowed. They are irritating to eyes and skin. Keep containers tightly closed and in a well ventilated place. Take off immediately all contaminated clothing. Avoid contact with skin and eyes. It is recommended that protective gloves be used during application.

STORAGE AND SHELF LIFE

AT 109 C has a shelf life of 12 months when stored in original unopened container.

THINNING AND CLEAN UP

Thinning is not recommended when using this product for the applications described. Wash all equipment in water or water/detergent immediately on completion of work since AT 109 C will cure underwater if equipment is left.

DISCLAIMER

The technical details recommendations and other information contained in this data sheet are given in good faith and represent the best of our knowledge and experience at the time of printing. It is your responsibility to ensure that our products are used and handled correctly and in accordance with any applicable Standard, our instructions and recommendations are only for the uses they are intended. We also reserve the right to update information without prior notice to you to reflect our ongoing research and development program.

The supply of our products and services are\ also subject to certain terms, warranties and exclusions, which may h ave already been disclosed to you in prior dealings or are otherwise available to you on request you should make yourself familiar with them.

DISPOSAL / SPILLAGE

Spillage of any of the component products should be absorbed onto sand or other inert materials and transferred to a suitable disposable vessel. Disposal of such spillage or empty packaging should be in accordance with local waste disposal authority regulations.

CONDITIONS OF SALE

Sold subject to the Company's conditions of sale which are available on request.

NOTE

The information supplied in this datasheet is based upon extensive experience and is given in good faith in order to help you. Our Company policy is one of continuous Research and Development; we therefore reserve the right to update this information at any time without prior notice. We also guarantee the consistent high quality of our products; however as we have no control over site conditions or the execution of the work, we accept no liability for any loss or damage which may arise as a result thereof.