Fosroc 20L Nitobond SBR Latex, 5Lit X 02 Pack Per Box, For Bonding Agent/Screed Modifier

Product Details

Nitobond SBR(Latex)Mortar and Screed modifier cum bonding aidUsesFor modifying and improving bonding of floor toppings,renderings and mortars; repair of worn, damaged and spalledconcrete, repair of large cracks; polymer modified floorscreeds; waterproof plasters for masonary and slurries.Advantages Simple to use - Single component, gauged as required High - Provides excellent bond to concrete, adhesionplaster, masonry, stone work, etc Improves -Gives weather resistant mortar with improveddurability impermeability to chlorides and other harmfulagents Reduces - Provides waterproof screeds, plasters andPermeability slurries Increases - Improved tensile and flexural propertiesstrength allow thin applications Versatile - Compatible with all common hydraulic cements Cost effective - Nitobond SBR (Latex) is economical touseDescriptionNitobond SBR(Latex) is modified styrene butadiene emulsionspecially designed for use as a bonding aid and gauging liquidfor cementitious systems. It is resistant to hydrolysis and cantherefore be used for external applications too.Technical SupportFosroc provides a technical advisory service supported by ateam of specialists in the field.PropertiesTypical mechanical properties of 1 : 3 cement sand mortar atW/C - 0.45 for control and W/C - 0.35 for mortar containingNitobond SBR (Latex) ( 5 lites / 50 kg cement ). Tested inaccordance with BS 6319 & wet cured.Mechanical properties Control Nitobond SBR (Latex)Compressive strength (N/mm2)3 days 11.5 12.57 days 13.0 14.528 days 22.0 24.0Tensile strength(N/mm2) @ 28 days 2.5 3.5Flexural strength(N/mm2) @ 28 days 5.0 6.5Note : Increased dosages of Nitobond SBR (Latex) andfurther water reduction leads to improved mechanicalproperties.Chemical resistance :Cementitious based materials have limited chemicalresitance. The addition of Nitobond SBR (Latex) to cementmortars reduces permeability and therefore helps reduce therate of attack by aggressive chemicals.Application instructionsSurface Preparation:The object of the surface preparation is to achieve a cleansound surface with a good mechanical key. All substratesshould be cleaned and free of dust, plaster, oil, paint, grease,corrosion deposits, and any other deleterious substances.Laitence should be removed by mechanical means. Smoothsubstrates must be mechanically roughened e.g. byscabbling, needle gun or grit blasting to provide an adequatekey.Corroded reinforcing steel should be exposed around its fullcircumference and cleaned to remove all loose scale andcorrosion deposits. It is always preferably to clean the steelto a bright condition. Use of emery cloth, grit or sand blastingis recommended.PrimingReinforcing steel must be primed with Nitozinc Primerimmediately after cleaning. The concrete substrate should bethoroughly dampened with water and any excess removedbefore being primed by thoroughly scrubbing in a slurry coat of1 volume Nitbond SBR (Latex) to 1 volume water to 3 volumesfresh cement.In order to obtain a smooth consistency the cement shouldbe blended slowly into the liquids. Stir frequently during useto offset settlement.