CONBEXTRA EPGP

• 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

Conbextra EPGP has a shelf life of 12 months if kept in a dry, cool store in the original unopened package.

Some people are sensitive to epoxy resin so gloves and a barrier cream such as Kerodex 71, Rozalex 9, Debba-Wet Work or similar should be used when handling these prod- ucts. If contact with the resin occurs, it must be removed before it hardens with a resin removing cream such as Kerocleanse 22 or Rozalex 42. Follow by washing with soap and water. Do not use solvent. The use of goggles is recommended but should accidental eye contamination occur, wash thoroughly with plenty of clean water and seek medical treatment immediately. Fire Nitoprime 25 and Fosroc Solvent 102 are flammable. No smoking. Use in well ventilated areas away from sources of heat and naked flames. Flash points Nitoprime 25 : 39ºC Fosroc Solvent 102 : 33ºC

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 dedicated specification assistance in locations all over the world. For further information on any of the services or other products offered by Fosroc, please consult your local Fosroc office, as below.

All tools and equipment should be cleaned with Fosroc Solvent 102* immediately after use.

• For underplate grouting, failure to adhere to “Instructions
• for use”, may result in cracking & edge uplifting.
• High temperature working
• For temperatures above 35ºC, special procedures need to
• be adopted, refer to your local Fosroc office for further
• advice.
• Estimating

• 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 : Electric or pneumatic breaker
• : Hammer and chisel
• Mixing equipment : Forced Action Mixer
• Fosroc mixing paddle
• Application equipment : Formwork
• : Pouring equipment
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• constructive solutions
• Application - points of note
• Fosroc operates a policy to encourage the use, where possible, of approved or licensed applicators.
• This ensures that works are completed satisfactorily so that the long term performance of the
• materials is assured. 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.
• Section B : Application Method
• 0 Surface Preparation
• Attention to full and proper preparation is essential to successful grouting.
• The substrate surface must be free from oil, grease or any loosely adherent material.
• If the concrete surface is defective or has laitence, it must be cut back to a sound base.
• Bolt holes or fixing pockets must be blown clean of any dirt or debris.
• Bearing plate/base plate
• The underside of the base plate should be clean and free from oil, grease, rust, scale or other
• loosely adherent material.
• It is recommended that the underside and edges of the base plate be coated with Nitoprime
• primer to prevent rust formation and ensure bonding with the Conbextra EPGP grout.
• Formwork - General
• Before fixing any formwork, ensure that the area to be grouted is clean.
• The formwork itself must be constructed to be leakproof, to prevent any possible grout loss.
• This can be achieved by using foam rubber strip or mastic sealant beneath the formwork, and
• at any joints in the formwork. It shall, however, also be provided with drain holes and plugs.
• The formwork should also be constructed in such a way as to keep the final, unrestrained
• surface area of the grout to a minimum, to avoid problems with cracking at a later stage.
• It should be fixed in such a way as to allow easy stripping, without causing damage or
• distress to the grout.
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• All dirt and debris to be removed from the grout area before the last piece of formwork is
• fixed.
• Formwork - Geometry
• Pouring side
• set up so that grout will be poured the shortest distance across the base plate
• erected a maximum of 75 mm from the base plate edge
• Open side
• set up directly opposite the pouring side
• erected a maximum of 25 mm from the plate edge
• Flanking sides
• set up flush with the plate edge
• close attention to „grout tightness‟ of the formwork
• Mixing
• The entire contents of the hardener can should be poured into the base container and mixed
• until homogeneous.
• Place the resultant material into a suitable forced action mixer and ensure that the entire
• volume is poured in.
• Add the aggregate and mix for 2-3 minutes or until uniform colour is achieved.
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• constructive solutions
• Under no circumstances should part packs be used, as this will change the resin:powder
• ratio, adversely affecting material performance and automatically invalidating Fosroc‟s
• standard product guarantee.
• Placing
• It is essential that the machine mixing capacity, material supply and labour availability is adequate to
• enable the grouting operation to be carried out continuously.
• Prior to placement, ensure that all surfaces are dry.
• Any bolt pockets must be grouted prior to grouting between the substrate and the base plate.
• Continuous grout flow during the grouting operation is essential. Sufficient grout must be
• available prior to starting, and time taken to pour a batch must be regulated to the time taken
• to prepare the next one.
• The mixed grout should be poured only from one side of the void to eliminate the entrapment
• of air. The hydrostatic head must be maintained at all times so that a continuous grout front is
• achieved.
• When the grout reaches the open side of the formwork, and rises above the underside of the
• base plate, pouring should continue slowly down the length of the base plate until completed.
• Finishing
• Wherever possible unrestrained “shoulders” are to be avoided. These have a tendency to
• crack and/or debond, due to their unrestrained nature.
• Protection
• On completion of the grouting operation, all areas of grout should be protected from solar
• heat gain by providing shade over the whole area.
• Section C : Approval and variations
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• constructive solutions
• This method statement is offered by Fosroc as a „standard proposal‟ for the application of Conbextra
• EPGP. It remains the responsibility of the Engineer to determine the correct method for any given
• application.
• Where alternative methods are to be used, these must be submitted to Fosroc for approval, in
• writing, prior to commencement of any work. Fosroc will not accept responsibility or liability for
• variations to the above method statement under any other condition.