NITOBOND AR STD

Latex Acrylic polymer based cement modifier cum bonding aid with waterproofing property.

Uses:

• For improving and bonding floor toppings, mortars and renders
• As a bonding agent for Renderoc and other cementitious mortars
• Polymer modified mortars and screeds for reinstatement of worn out/damaged concrete
• Polymer modified concrete for improving the impermeability and there by enhancing the waterproofing property

Advantages:

• Good adhesion – Provides good bond to concrete, masonry, stone work, plaster and block work.
• Increased strength – Improves tensile and flexural properties of mortar.
• Versatile – Compatible with all common hydraulic cements
• User friendly – application by brush/spray
• Improves cohesion – No bleeding and segregation

Description:

• Nitobond AR Std. is a single component latex acyrlic polymer emulsion used as bonding aid cum cement modifier with waterproofing property.

Technical Support:

• Fosroc offers technical support service to specifiers, end users and contractors, as well as on-site technical assistance in locations all over the country.

Application instructions
Surface Preparation:

• The object of the surface preparation is to achieve a clean sound surface with a good mechanical key. All substrates should be cleaned and free of dust, plaster, oil, paint, grease, corrosion deposits, and any other deleterious substances. Laitence should be removed by mechanical means. Oil or greasy deposits should be removed by suitable means. All surfaces so treated should be thoroughly washed with clean water. Smooth substrates must be mechanically roughened e.g. by scabbling, needle gun or grit/ sand blasting to provide a mechanical key.

Concrete Repairs:

• Any reinforcing steel in the repair area should be exposed around its full circumference and cleaned to remove all loose scale and corrosion deposits and then primed with Nitocote AP35, acrylic primer. All surface dust and debris shall be removed.

Priming:

• Immediately before priming, the concrete substrate should be thoroughly dampened with water and any excess being brushed off. Scrub Nitobond AR Std. bonding aid into the substrate. Puddling of the emulsion to be avoided. The repair mortar/topping should be applied whilst the primer is still tacky. However a satisfactory bond can be achieved upto 15 mins. after application at 300 C.
• In order to obtain a smooth consistency mortar, the cement and sand must be dry mixed and then poured into the liquid with the required amount of water in the prescribed mix proportions.

Additional Guidance:

• Edges shall be cut back to avoid feather edging and all surfaces including edges shall be primed using Nitobond AR Std. bonding aid.
• All applications shall be wet on wet. For best results Nitobond AR Std. bonding aid should be allowed to become tacky. If the bonding agent is allowed to dry for more than 15 minutes at 300 C initial ‘grab’ to the repair mortar will be reduced. Therefore, the use of temporary shuttering is recommended. Water content of the mortar should be kept to the minimum necessary.
• For consistent results, the use of clean, dry sand is recommended. Where the use of wet sand is unavoidable, the quantity of water to be added must be reduced.
• Mortars shall be cured using Nitobond AR Std. bonding aid to prevent rapid drying out. Uncured mortar shall be protected from frost and rain.
• Mortar shall not be retampered after initial set.
• Minimum application temperature for Nitobond AR Std. bonding aid is 100 C, but the mortar should not be applied if the temperature is expected to fall.