Nitomortar S

Nitoprime 25, Nitocote Primer Sealer and Nitomortar S should be removed from tools, equipment and mixers with Fosroc Solvent 102* immediately after use.

Fosroc offers a comprehensive technical support service to specifiers, end users and contractors. It is also able to offer on-site technical assistance, an AutoCAD facility and dedicat- ed specification assistance in locations all over the world. Estimating

All products have a shelf life of 12 months at 20°C if kept in a dry store in the original, unopened bags or packs. Storage conditions Store in dry conditions in the original, unopened bags or packs. If stored at high temperatures, the shelf life may be reduced to 4 to 6 months.

Nitomortar S should not be used when the temperature is below 5°C and falling. Do not mix part packs under any circumstances. Nitomortar S should not be exposed to moving water during application. Exposure to heavy rainfall prior to the final set may result in surface scour. If any doubts arise concerning temperature or substrate conditions, consult the local Fosroc office. The material should not be applied at less than 5 mm thickness. Greater thicknesses than those specified above can be achieved by the application of subsequent layers. Larger areas should be applied in a ‘chequer board’ fashion. For higher build characteristics to vertical locations, or for overhead application, Nitomortar HB is recommended. UAE/0269/01/C Fosroc Nitomortar S Al Gurg Fosroc LLC Post Box 657, Dubai United Arab Emirates www.fosroc.com

• Fosroc products are guaranteed against defective materials and manufacture and are sold subject to its standard Conditions for the Supply of
• Goods and Service. All Fosroc datasheets are updated on a regular basis. It is the user’s responsibility to obtain the latest version.
• Head Office
• telephone: (+9714) 2039699 fax: (+9714) 2859649 email: agf@fosroc.com
• Regional offices
• Abu Dhabi, Al Gurg Fosroc telephone: 673 1779 fax: 673 1449 email: abudhabi@fosroc.com
• Bahrain, YBA Kanoo telephone: 17738200 fax: 17732828 email: bahrain@fosroc.com
• Kuwait, Boodai telephone: 4817618 fax: 4832124 email: kuwait@fosroc.com
• Oman, Al Amana telephone: 24815080 fax: 24817554 email: oman@fosroc.com
• Denotes the trademark of Fosroc International Limited
• †
• See separate data sheet

Nitoprime 25, Nitocote Primer Sealer, Nitomortar S and Fosroc Solvent 102 should not come in contact with skin or eyes, or be swallowed. Ensure adequate ventilation and avoid inhalation of vapours. Some people are sensitive to resins, hardeners and solvents. Wear suitable protective clothing, gloves and eye protection. If working in confined areas, suitable respiratory protective equipment must be used. The use of barrier creams provide additional skin protection. In case of contact with skin, remove immediately with resin removing cream followed by washing with soap and water. Do not use solvent. In case of contact with eyes, rinse immediately with plenty of clean water and seek medical advice. If swallowed, seek medical attention immediately - do not induce vomiting. Fire Nitomortar S and Nitocote Primer Sealer are non-flammable. Nitoprime 25 and Fosroc Solvent 102 are flammable. Keep away from sources of ignition. No smoking. In the event of fire, extinguish with CO 2 or foam. Do not use a water jet. Flash points Nitoprime 25 : 39°C Fosroc Solvent 102 : 33°C For further information, refer to the Product Material Safety Data Sheet.

Overcoating with protective/decorative finishes Nitomortar S is extremely durable and resistant to a wide range of acids, alkalis and industrial chemicals and will provide excellent protection to the concrete and embedded steel reinforcement within the repaired location. The surrounding parts of the structure may benefit from the application of a protective coating, thus bringing them up to the same protective standard as the repair itself. Fosroc recommends use of the Nitocote range of epoxy resin, chemical-resistant, protective coatings. For surrounding areas not subjected to chemical attack or physical wear, Fosroc recommend the use of the Dekguard range of anti-carbonation, anti-chloride protective coatings. These products provide a decorative and uniform appear- ance as well as protecting areas of the structure which might otherwise be at risk from the environment. Nitocote epoxy resin protective coatings should be applied within 24 hours. Dekguard products should not be applied until the Nitomortar S is at least 3 days old. For further advice, consult the local Fosroc office.

It is suggested that the following list of equipment is adopted as a minimum requirement Protective clothing : Protective overalls : Good quality gloves, goggles and face mask Preparation equipment : Wire brush : Proprietary blasting equipment : Proprietary Degreaser Mixing equipment : Measuring jug : Proprietary forced-action mixer Application equipment : Hand application trowel : Wooden float : Steel or plastic finishing float : Finishing sponge Application - points of note Fosroc operates a policy to encourage the use, where possible, of registered applicators, since the long term performance of the materials is dependent upon proper application. For contractors who wish to apply the materials themselves Fosroc is also able to offer technical assistance and training, either on-site or at its Training Centre in Dubai. MS/xxxx/09/xx Page 2 constructive solutions Section B : Application Method 1.0 Surface preparation Attention to full and proper preparation of the substrate is essential for complete repair adhesion. 1.1 The surface of the substrate should be thoroughly cleaned to remove all traces of dust, oil, paint, curing compounds, grease, corrosion deposits, algae or any unsound material which might affect subsequent bond between Nitomortar S and the substrate. 1.2 Oil and grease deposits are best removed by steam cleaning, detergent scrubbing or the use of a proprietary degreaser. The effectiveness of decontamination should then be assessed by a pull-off test. 1.3 The substrate should further be ‘roughened’ to remove excess laitence, to expose pinholes & blowholes and to provide a mechanical key for subsequent application of Nitomortar S. This is most effectively achieved by the use of proprietary blast media, such that the fine aggregate is exposed but not polished. 1.4 Saw cut or cut back the extremities of the repair locations to a depth of at least 5 mm to avoid feather-edging and to provide a square edge. Break out the complete repair area to a minimum depth of 5 mm upto the sawn edge. 1.5 Expose fully any corroded steel in the repair area and remove all loose scale and corrosion deposits. Steel should be cleaned to a bright condition paying particular attention to the back of exposed steel bars. Grit-blasting is recommended for this process. 2.0 Substrate priming 2.1 The horizontal substrate should be primed using Nitoprime 25 and predominantly vertical and metal substrates should be primed with Nitocote Primer Sealer. 2.2 The primer should be scrubbed well into the prepared substrate, taking care that all imperfections in the surface are properly coated, avoiding “ponding” in depressions. 3.0 Reinforcing steel priming 3.1 The cleaned steel should be coated with one full coat of Nitoprime Zincrich within three hours of cleaning. 4.0 Mixing 4.1 Care should be taken to ensure that Nitomortar S is thoroughly mixed to produce a fully homogeneous, trowellable mortar. 4.2 The hardener and base components should be stirred thoroughly in order to disperse any settlement before mixing them together. 4.3 The entire contents of the hardener should be emptied into the and base can and thoroughly mixed by hand for 3 minutes, then emptied into a forced action mixer. 4.4 Slowly add the entire bag of aggregate into the mixing vessel and mix for a further three minutes until the aggregate is thoroughly wetted out with the mixed resins. MS/xxxx/09/xx Page 3 constructive solutions 4.5 Under no circumstances should part bags be used. 5.0 Application Do not proceed with the application when rainfall is imminent, unless in a sheltered or protected position. 5.1 Nitomortar S should be applied as soon as the primer has started to gel but still has surface ‘tack’. If the Nitoprime 25 / Nitocote Primer Sealer has already cured hard, a second application must be made before application of Nitomortar S. 5.2 Apply the mixed Nitomortar S to the prepared substrate by wood float, pressing firmly into place to ensure positive adhesion and full compaction. Thoroughly compact the mortar around the exposed reinforcement. 5.3 In areas where exposed reinforcing is present, application by gloved hands is an acceptable alternative but the product must be finished to a tight surface with a steel trowel. 5.4 Nitomortar S can be used in single applications of upto 50mm thickness in horizontal locations or upto 12 mm thickness in in vertical or overhead locations in a single application and without the use of formwork. Thicker sections should be built up in layers. 5.5 Chequer board application technique is recommended for repair of areas generally over 2m². 5.6 For multiple layer application, ensure that the exposed steel reinforcing bars should be firmly secured to avoid movement during application as this will adversely effect mortar compaction, build and bond. 5.7 For additional layers, the surface of the intermediate application should be scratch-keyed to provide a suitable surface for subsequent layer, reprimed with Nitocote Primer Sealer and then a further application of Notomortar S may proceed. The application of additional layers should follow between 8 and 24 hours (@ 20°C) after the first application. For higher temperatures, contact the Fosroc office. 6.0 Finishing 6.1 Nitomortar S is finished by the use of a wood float and closed with a steel trowel wiped with a cloth dampened with Fosroc Solvent 102. The completed surface should not be overworked. 7.0 Cleaning 7.1 Nitoprime 25, Nitoprime Zincrich, Nitocote Primer Sealer and Nitomortar S should be removed from tools with Fosroc Solvent 102, immediately after use. Section C : Approval and variations This method statement is offered by Fosroc as a ‘standard proposal’ for the application of Nitomortar S. It remains the responsibility of the Customer to determine the correct method for any given application. Where alternative methods are to be used, these must be submitted to Fosroc for comment, in writing, prior to the commencement of any work.