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32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL Fosroc® Conbextra HS Pumping Where large volumes have to be placed Conbextra HS may be pumped. A heavy duty diaphragm pump is recommended for this purpose. Screw feed and piston pumps may also be suitable. Maximum aggregate is 1.0 mm. Ensure the selected pump is capable of pumping this size aggregate. Curing On completion of the grouting operation, exposed areas should be thoroughly cured. This should be done by the use of Concure curing membrane, continuous application of water and/or wet hessian. Cleaning Conbextra HS should be removed from tools and equipment with clean water immediately after use. Cured material can be removed mechanically. Limitations Low temperature working When the air or contact surface temperatures are 5°C or below on a falling thermometer, warm water (30-40°C) is recommended to accelerate strength development. For ambient temperatures below 10°C the grout consistency should be flowable and the formwork should be maintained in place for at least 36 hours. Normal precautions for winter working with cementitious materials should then be adopted. High temperature working At ambient temperatures above 35°C the mixed grout should be stored in the shade. Cool water (below 20°C) should be used for mixing the grout. INDEX 122 Estimating Supply 202000 - Conbextra HS is supplied in 20 kg moisture resistant bags. Yield Allowance should be made for wastage when estimating quantities required. The approximate yield for different consistencies is: Consistency Flowable High Flow Litres / 20 kg bag: 9.8 10.1 kg/m³: 2370 2280 No. 20 kg bags/m³: 102 99 Storage Conbextra HS has a shelf life of 12 months if kept in a dry store in sealed bags. If stored in high temperature and high humidity locations the shelf life may be reduced.


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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