Epoxy Concrete Bonding Agent

SPECIFICATION
ASTM C881 Type2, Class B and C.

DESCRIPTION
Master Bond is a two component permanent epoxy adhesive for internal or external bonding or renderings, granolithic toppings, and concrete. The ultimate bond strength is greater than the tensile strength of concrete. Master Bond does not shrink and provides an even and stress free bond

ADVANTAGES
1) High strength
2) Non shrink.
3) Durable.
4) Resistant to chemical attack.
5) Supplied in pre-weighed units.
6) Solventless epoxy insensitive to moisture.

DIRECTIONS FOR USE
Preparation:
All surfaces must be thoroughly cleaned and prepared. All loose particles, laitence, dust, curing compounds, floor hardners, oil, grease, fat, bitumen and paint must be removed if good bond strength is to be achieved. Gloss surfaces must be abraded.
If oil or grease are present, scrub surface with hot detergent water and rinse thoroughly. Where the concrete surface is badly disintegrating, the degraded areas should be removed by chipping, grit blasting, or scabbling until a sound base is obtained. Remove loose particles and prepare as above. All laitence that has not been worn away should be removed by mechanical scarification, sandblasting, or by acid etching. Visible signs of mould growth, lichen, or algae, should be removed and treated with a fungicidal wash.
New concrete should have cured until the shrinkage and moisture movement is low. Surfaces heavily impregnated with mould oil should be degreased and sandblasted or mechanically scarified to remove the contaminated surface. All curing compounds should have disintegrated or be removed and application carried out only over a clean, dust free surface.
Mixing :
Carefully transfer the entire contents of the smaller container of REACTOR COMPONENT to the larger BASE COMPONENT and mix thoroughly, using a stout, palette knife or a slow running drill with a paint mixing paddle until uniformity is achieved. This normally takes two to three minutes.
Note: Heat is generated after mixing Master Bond and the can may become too warm to hold.
Guide to Application :
The material is ready to use 3 or 4 minutes after mixing. As the pot life is limited work should proceed quickly. Master Bond should be applied evenly across the whole surface with a clean, short haired paint brush. The contents of the can must be used within 45 minutes of mixing. On horizontal surfaces, lay the screed immediately after applying Master Bond. Rendering over 6 mm thick should be built up in several layers.
Renderings and Screeds :
Once the Master Bond has been applied recognised methods of working may be adopted. It is essential that granolithic paving and sand cement renders and screeds are cured. This can be achieved by curing with a fine spray of clean water and polythene sheeting. Failure to observe these precautions may cause the render or screed to crack and craze.
Temperature :
Since low temperatures retard the setting and curing of Master Bond. Avoid working in cold weather if possible. Although Master Bond cures slowly at low temperatures, a temperature of 7° C-10° C can be considered to be the lowest at which work on vertical rendering may proceed satisfactorily without stuttering.

PROPERTIES
Typical properties of Master Bond are as follows:

QUALITY ASSURANCE

All “PERMA” branded products are manufactured under strict quality control supervision as per exact manufacturing specification. Should you find the behaviour of the product varying from the claims in the data sheets please stop the use of the product and contact the nearest Perma staff or distributor.

STATEMENT OF RESPONSIBILITY

Perma branded products when used in accordance with its current published directions for use performs as per its data sheets / catalogue. The manufacturer and the distributor will not be responsible for other materials and conditions of inferior workmanship.