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STRUCTURAL SOLUTIONS TO HONEY COMBING

Product Specified to be used:

S.NO ITEM NAME TECHNICAL NOMENCLATURE

1 NITOBOND ARACRYLIC EMULSION CEMENT MODIFIER AND WATER

BASED CONCRETE BONDING AGENT

2 RENDEROC S2TWO COMPONENT STRUCTURAL GRADE POLYMER

MODIFIED REINSTATEMENT MORTAR

3 NITOBOND SBR (LATEX) MORTAR AND SCREED MODIFIER CUM BONDING AID

4 CEBEX 100 PLASTICISED EXPANDING GROUT ADMIXTURE

I-System for Most critical areas: Application of RENDEROC S2

1.0 Surface preparationAttention 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 Renderoc S2 and the substrate.

1.2 The specifications mentioned in Data sheet shall be strictly adhered to.

1.3 Cut back all areas to be treated to minimum 5mm depth.

2.0 Substrate priming

2.1 All prepared areas should be thoroughly soaked with clean, potable water immediately prior to

the application of Renderoc S2, such that the substrate is saturated surface dry.2.2 Nitobond AR shall be used as the bonding agent.

3.0 Mixing

Care should be taken to ensure that Renderoc S2 is thoroughly mixed. In all cases the powder should

be added to the water and mixed strictly in accordance with appropriate procedure.

3.1 Mixing - small quantities

a) Small quantities - up to 5 kg - may be mixed manually.

b) The mixing ratio, by volume, should be 3.25 to 3.5 liters of water+0.25 kg polymer to 25 kg

Renderoc S2. In any circumstances the water content should not exceed 3.5 liters.( for 5 kg

of Renderoc S2 add 0.7liters of water+0.05 kg of polymer)

3.2 Mixing - large volumes

a) For larger volumes of material it will be necessary to mix using- a proprietary forced action mixer, or

- slow speed drill (400/500 rpm) + Fosroc MR4 mortar paddle attachment.

b) For each bag of Renderoc S2 to be mixed, measure out and place 3.25 to 3.5 liters of cool,

potable water into the mixer+ 0.25 kg of polymer. Always add the powder to the water.

With the mixer in operation add one full bag of Renderoc S2, and mix continuously for 5

minutes until fully homogenous.

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4.0 Application

Apply the fully mixed Renderoc S2 to the prepared substrate, up to 5 to 50 mm thickness, by

steel trowel. It should be applied with the minimum of working, and be allowed to partly set

before finally trowelling to a smooth finish.

5.0 Finishing

5.1 Renderoc S2 is finished by striking off with a straight edge and closing with a steel or plastic

float. Note that water can be drawn to the surface if overworking with the float occurs, and anunsightly finish may result.

5.2 Damp sponges or plastic floats may be used to achieve a desired surface texture, but care

should again be taken not to overwork the surface.

6.0 Curing

Curing of Renderoc S2 is required as per normal construction practices. Apply a coat of

Nitobond AR Cement slurry as curing membra ne and allow it to self cure

II-POLYMER MODIFIED CEMENT GROUT FOR INJECTION OF HIDDEN AREAS AFTER

SURFACE SEALING

Nitobond SBR (Latex) along with Cebex 100 can be used for injection Grouting the dosage ofNitobond SBR (Latex) is going to be 3 ltr per bag of cement and that of Cebex 100 will be 225 gms

per bag of Cement. The injection is carried out as per standard application.

Specification

All grouting where ever required must be carried out with a cement based grout incorporating

a plasticised, expanding powder admixture and Nitobond SBR Latex -Polymer modified

cement grout for injection.The grout admixture must be iron-free and chloride-free andshall be added to the cement grout in the proportion of 225g per 50kg of cement.The grout admixture shall provide an expansion of up to 4% in the plastic grout, by means ofa gaseous system. The grout admixture must be stored, handled and mixed strictly inaccordance with the manufacturer's instructions.Application instructions:

MixingFor best results a mechanically powered grout mixer must be used. For quantities upto 50kg,a slow speed drill fitted with a shear paddle is suitable. Large quantities will require a highvolume drum mixer. It is essential that machine mixing capacity and labour availability isadequate to enable the grouting operation to be carried out continuously. This may requirethe use of a holding tank with provision for gentle agitation to maintain fluidity. The selectedwater content should be accurately measured into the mixer. Then add the specified quantityof Nitobond SBR Latex. The cement shall be slowly added to Cebex 100. Mixing shallbe continued for 5 minutes, making sure that a smooth even consistency is obtained.A

pplicationIt shall be ensured that areas to be grouted are clean, sound, and then pre -wetted. Theunrestrained surface area of the grout must be kept to a minimum. The grout shall be placedwithin 20 minutes of mixing to gain the full benefit of the expansion process. Usual placing orpumping procedures shall be adopted ensuring a continuous operation..Dosage50Kg OPC + 3Ltr of Nitobond SBR Latex + 20-22Ltrs of Water+ 225gm Cebex 100 will

Yield Approx 36ltrs of grouting Slurry