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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 INDEX 108 Technical Data Sheet Formulated anti-wash out, specialist grout for underwater grouting applications Uses Conbextra UW is used for free flow or pumped grouting applications underwater or in tidal zones. There will be no significant ‘wash-out’ of the cement phase. Applications include bridge columns, quay pillars, concrete piling, slipways and dams. Advantages „ No risk of significant ‘wash-out’ of cement phase when placed underwater „ Displaces water effectively „ Gaseous expansion system compensates for shrinkage and settlement in the plastic state „ High early and ultimate strength and exceptional resistance to freeze-thaw cycling ensure durability of the hardened grout „ Chloride free „ Pre-packaged needing only on-site addition of water Description Conbextra UW is supplied as a ready to use powder. The addition of a controlled amount of clean water produces a free flowing grout. The grout exhibits exceptional resistance to ‘washing-out’ of the cement phase when placed in stationary or moving water. Conbextra UW is a blend of cement, graded fine aggregate and chemical additives which impart controlled expansion, water reduction and non wash-out characteristics. The aggregate grading minimises segregation and bleeding whilst assisting the flow characteristics. Maximum aggregate size for pumping is 0.3 mm. Standards Compliance AS 1478.2-2005 Appendix E Early Volume Change Technical Support Parchem offers a comprehensive range of high quality, high performance construction products. In addition, Parchem offers technical support and on-site service to specifiers, end-users and contractors. Specification Clauses Performance specification All grouting (specify details and areas of application) must be carried out with a cement based product which is iron free and chloride free. It shall be mixed with clean water at the water/powder ratio of 0.22 and not exhibit bleed or segregation. A volumetric expansion of up to 3% (by means of a gaseous system) shall occur while the grout is in a plastic state. The grout shall contain admixtures to minimise wash-out in underwater applications. The compressive strength of the grout must exceed 30 MPa at 7 days and 50 MPa at 28 days. The storage, handling and placement of the grout must be in strict accordance with the manufacturer’s instructions and current Technical Data Sheet. Supplier specification All grouting (specify details and areas of application) must be carried out using Conbextra UW manufactured by Parchem and used in accordance with the manufacturer’s Technical Data Sheet. Fosroc® Conbextra UW March 2014


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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