|Packaging Size||20 Ltr|
|Grade Standard||Chemical Grade|
Recommended primer for Fosroc cementitious repair system. For improving and bonding floor toppings, renders, and mortars; repair of worn, damaged or spalled concrete; polymer modified floor screeds.Advantages:
- Simply brush onto concrete as a primer. Single component, gauged as required.
- High adhesion -Provides excellent bond to concrete, masonry, stonework plaster and block board.
- Increased strength- Improves tensile and flexural properties of mortar. Allows thin section applications.
- Versatile - Compatible with all common hydraulic cement
- Economical - Economical to use
Nitobond AR is a modified acrylic emulsion specially designed for use as a bonding aid and gauging liquid for cementitious systems. It is resistant to hydrolysis and can, therefore, be used for external applications. Nitobond AR is the recommended primer for the Fosroc cementitious repair system.Technical support
Fosroc offers a technical support service to specifiers, end users, and contractors, as well as on-site technical assistance in locations all over the country.Specification clausesAs a bonding agent
The bonding agent shall be Nitobond AR an acrylic based emulsified solution containing a minimum of 43% solids and compatible with cementitious materials. The bonding agent shall provide adequate bond strength when directly applied on concrete and also mixed with neat cement.As a mortar modifier
The mortar modifier shall be Nitobond AR, an acrylic emulsified cement modifier which provides good bond with concrete/masonry and improves the flexural strength, tensile strength properties of the mortar when added in the specified quantities. It shall be compatible with all common hydraulic cement. Application instructionsSurface 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. Latency 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/ sandblasting 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 Nitozinc Primer. Remove all surface dust and debris.Priming
Immediately before priming, the concrete substrate should be thoroughly dampened with water and any excess being brushed off. Scrub Nitobond AR into the substrate. Avoid pudding of the emulsion. The repair mortar/topping should be applied whilst the primer is still tacky. However, a satisfactory bond can be achieved up to 15 mins. after application at 30Typical Mix designs to modify mortars
- OPC :50 kg
- Zone 2 sand: 150 kg
- Nitobond AR: 8 - 10 liters
As a bonding agent
Nitobond AR may exhibit less overlay time at higher temperature. In such cases as overlay mortar shall not be applied when Nitobond AR is totally dry.
Nitobond AR, when used as the bonding agent, cannot act as a barrier coat against ingress of chloride ions from the substrate.
Immediately after use, wash all tools with clean water.