Nitoflor Hardtop Special constructive solutions - …

1 Nitoflor Hardtop Specialconstructive solutionsNitoflor Hardtop SpecialNon metallic, monolithic surface hardening compoundUsesNitoflor Hardtop Special provide a highly abrasion resistantsurface to concrete floors by the dry shake-on method whichensures that the hardwearing surface bonds monolithically tothe base concrete. They are ideally suited for all industrialareas subject to the heaviest traffic, loading bays, truckinglanes, car parks, workshops, machine shops, ramps Non metallic - does not rust or stain. Provides a hard, abrasion resistant surface Forms monolithic bond with base concrete Easy and economical to applyDescriptionNitoflor Hardtop Special are quality controlled, factory blendedpowder which are ready to use on site.

2 They contain specialhardwearing aggregates which have been selected forabrasion and wear resistant properties as well as shape andsize. These latter considerations, together with the use of highperformance workability admixtures, produces a materialwhich is easy to trowel into the surface of fresh, wet Hardtop Special cure monolithically to provide a dense,non-porous surface which is extremely hardwearing andabrasion resistant. Monolithic cure ensures that problemsnormally associated with thin 'granolithic' screeds, viz.,shrinkage, cracking, etc., are completely non-metallic, Nitoflor Hardtop Special provide a non-slip surface which will never rust and supportFosroc offers a technical service to specifiers, end users andcontractors, as well as on-site technical assistance in locationsall over the resistance ( IS : 1237 - 1980) Nitoflor Hardtop Special have been tested as per IS:1237 -1980 against control concrete for abrasion results showed that Nitoflor Hardtop Special improvesthe abrasion resistance of concrete by 150% when tested asper guidelines in IS.

3 1237 - strengthAt water contents equivalent to those obtained in practicalapplications, the typical 28 days compressive strength ofNitoflor Hardtop Special cubes is 90 (Moh s Scale)The selected aggregates contained within Nitoflor HardtopSpecial have a hardness value of 7 on the Mohs original clauseNon metallic surface floor hardenerAll concrete floors shall be surfaced or broadcast with NitoflorHardtop Special , a non-metallic monolithic surface floorhardening compounds containing rust free, hardwearingaggregates. The aggregates shall have a Moh's hardness ofnot less than strengthNitoflor Hardtop Special shall possess a minimumcompressive strength of 90 N/mm2 when tested as per BS1881, Part 116, resistance : Very goodApplication instructionsBase concreteThe base concrete should have a minimum cement contentof 300 kg/m3.

4 The concrete mix should be designed tominimise segregation and bleeding. Free water cementratios of less than are of Fosroc's water reducing admixture is base concrete should be laid and compacted in accordancewith good concrete practice. Accurate finished profile andminimum laitence build-up should be ensured. Particularattention should be paid to bay edges and corners to ensurefull Hardtop Special are applied for different types ofindustrial (kg/m2)traffic Hardtop SpecialIt is recommended that the floor be marked off into bays ofknown area.

5 Sufficient material should then be laid out to meetthe required spread of Nitoflor Hardtop Special can begin when the baseconcrete has stiffened to the point when light foot traffic leavesan imprint of about 3mm. Any bleed water should by now Hardtop Special are applied in two stages.(a) The first application is made using 50% to 70% of the totalmaterial. Nitoflor Hardtop Special is evenly broadcast ontothe concrete surface. When the material becomes uniformlydark by the absorption of moisture from the concrete this firstapplication can be floated. Wooden floats or, on largeareas, the power trowel with disc may be used.

6 It isimportant, however, that the surface is not over worked.(b) Immediately after floating, the remaining Nitoflor HardtopSpecial is sprinkled evenly over the surface. Again moistureis absorbed and the surface can be floated in the same wayas finishing of the floor using a power trowel can be carriedout when the floor has stiffened sufficiently so that damage willnot be of ApplicationThe timing of application Nitoflor Hardtop Special is importantand critical. If applied too early, bleed or excess water will washaway the cementitious content of the products, thereby makingthem ineffective. Also denser aggregates sink into the the application of Nitoflor Hardtop Special is done too late,there will not be sufficient water/moisture to absorb the materialinto the concrete.

7 Material forcibly applied and trowelled thus,will cause cracks on the surface later, as there is no water/moisture to hydrate the edgesWhile applying Nitoflor Hardtop Special at the edges of theconcrete floor or, at the end of bays, extra precaution should betaken by way of sprinkling more material and finishing it smoothlywith a steel trowel. This is an additional protection particularlyto bay edges where the reaction due to heavy or impact is have shown that proper curing of concrete floors treatedwith products such as Nitoflor Hardtop Special is essential toensure the physical properties of the most efficient method of curing by using Concure WB,curing membrane which conforms to ASTM and DOEspecifications.

8 However, in indoor applications where curingconditions are less arduous and breakdown of the membraneslower, alternative approved methods of curing such aspolythene sheeting or water ponding are to useNitoflor Hardtop Special is supplied ready to use on or aggregates should never be added to NitoflorHardtop floorsWhen a coloured floor is required, it is strongly recommendedthat a job site trial area is treatmentsPenetration type surface treatments are recommendedto give low porosity and dust proof For concretes with optimised water cement ratios, NitoflorHardtop Special shall not be broadcast in excess of 3 - 4kg /m2.

9 For such applications, consult Fosroc. Nitoflor Hardtop Special are not advised for broadcast overconcrete in subzero temperatures, such as, floorings forcold storages Hardtop Special are supplied in sealed 25 kg Hardtop SpecialStorageIf protected from the environment in oridinal undamagedpacking, the shelf life of Nitoflor Hardtop is 12 stored in hig temperature and high humidity locations, theshelf life will be & Safety instructionsNitoflor Hardtop Special contains portland cement and aretherefore alkaline when in contact with water. Prolongedcontact with the skin should be avoided.

10 Any eye contaminationshould be washed immediately with plenty of clean water andmedical advice Hardtop Special is not informationFosroc manufactures a wide range of products specificallydesigned for the specialist flooring industry. These include: liquid-applied chemically-resistant coatings self-levelling epoxy toppings and trowel-applied, highly abrasion-resistant them are products suitable for use in: the food and drinks industry the pharmaceutical industry and in areas subjected to heavy industrial the control of static electricity is an importantconsideration, Fosroc have developed conductive anddissipative seamless floor systems.