Description
Technical Properties
| Appearance | White, non-toxic, highly viscous PVA based liquid |
|---|---|
| Solid | 34% |
| pH | 4 – 5 |
| Minimum Film Forming temperature | 3.6°C |
| Specific Gravity | 1.1 |
Uses
Adhesive: RAK Bond-PVA bonds with almost all building material except PVC, rubber and polyethylene. It can be used to bond plaster board, ceramic tiles, marble, glass, bricks, wood, leather etc. when added with suitable filler.
Bonding Agent
This gives mortars, especially topping mortars very good resistance. The wear resistance of screed treated with RAK Bond-PVA is excellent compared to a conventional screed with common mortar. The topping will be dust free, wear proof, water, oil and grease proof.
Bonding new concrete to old
Ensure that the substrate is stable, sound thoroughly clean and free from oil, grease and any loosely adhering material. Apply a sealing coat of RAK Bond-PVA diluted with 4 parts of clean water and allow to dry. Apply a bonding coat of RAK Bond-PVA diluted with an equal volume of water and lay the new concrete while this coat is still tacky. For maximum bond strength, add 5kg of RAK Bond-PVA per 100kg of cement.
Application
For uneven surfaces, or gaps to be filled, RAK Bond¬PVA is diluted with equal amount of water to obtain a paste with plaster, cement or with fine sand and the paste is applied. This paste can be applied as an adhesive for plaster boards, polystyrene tiles, etc. to ceiling and walls. If the bonding surface is more porous, add 3 times the amount of water to RAK Bond-PVA and prime the surface. As a bonding agent for screeds, plaster and rendering, the surface should be sound and free from all unwanted materials, such as oil, grease, paint, etc. Sealing of the surface is done with 1 part RAK Bond-PVA with 3 parts of water Then apply the bonding coat (1:1) and render, screed or plaster normally. The same method is used to bond new concrete to old. As an admixture, RAK Bond¬PVA gives a crack free, thin floor screed. For normal to heavy duty flooring 20-30 kg/100 kg cement is recommended.
Admixture
RAK Bond-PVA has a plasticizing e ect which improves mortar application, increases the mechanical strength of screeds, reduces shrinkage and has perfect adhesion even on smooth.
Storage
Up to 12 months in manufacturer’s sealed containers stored in a cool, dry place away from high temperatures.
Surface Sealer
RAK Bond-PVA can be used as a surface sealer for concrete and floors to minimize the dusting and penetration of unwanted oils. It can be used as an e ective primer prior to certain decorative coatings.
Curing
Curing occurs within 3 – 7 days.
Points to be noted:
- RAK Bond-PVA is not recommended where permanent dampness occurs.
- Do not use below 5°C Over trowelling is to be avoided.
- Always follow the mixing ratio and instructions.
Health & Safety
As with all chemical products, caution should always be exercised. Protective clothing, such as gloves and goggles, should be worn (see packaging for specific instructions). Treat any splashes to the skin or eyes with fresh water immediately. Should any of the product be accidentally swallowed, do not induce vomiting but call for medical assistance immediately. Ensure the container is available for the medical attendant to examine any relevant instructions and contents details. Reseal all containers after use and ensure product is stored as instructed on the safety section of the labelling.
