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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 JOINT FILLERS WATERPROOFING WATERSTOPS ROOFING TIMBER FLOORING ALPHABETICAL INDEX Technical Data Sheet 115 High fluid flow, dual shrinkage compensated, precision grout - (gaps 10 mm to 125 mm thickness) Uses Conbextra HF is used for free flow precision grouting in a wide range of applications. Recommended applications include: „ Critical machine base plates, sole plates and columns „ Joints between pre-cast concrete panels „ Pumped grouting applications „ Grouting applications where pouring access is restricted „ Anchoring of reinforcing steel bars „ Installation of tie bars Advantages „ Excellent initial flow and flow retention „ Rapid strength gain facilitates efficient installation and operation of plant „ High ultimate strength and low permeability ensure durability of the hardened grout „ Hydrogen-free gaseous expansion „ Chloride free „ Suitable for pumping or pouring Standards Compliance AS 1478.2-2005 Appendix E Early Volume Change AS 1478.2-2005 Table 4.1.2.2 Consistency Description Conbextra HF, shrinkage compensated cementitious precision grout, is supplied as a ready to use dry powder. The addition of a controlled amount of clean water produces a free-flowing precision grout for gap thicknesses up to 125 mm. In addition the low water requirement ensures high early strength and long term durability. Conbextra HF is a blend of Portland cements, graded fillers and chemical additives which impart controlled expansion in both the plastic and hardened states. The filler grading minimises segregation and bleeding over a wide range of application consistencies. Maximum aggregate size for pumping is 2.5 mm. Technical Support Parchem offers a comprehensive range of high performance, high quality construction products. In addition, the company offers a technical support package to specifiers and contractors as well as technical advice from staff experienced in the construction industry. Specification Clauses Supplier specification All precision grouting (specify details and areas of application) must be carried out using Conbextra HF manufactured by Parchem and used in accordance with the manufacturer’s current Technical Data Sheet. Performance specification To the nominated area(s) (specify details and areas of application), grouting must be carried out using a prepackaged, non-metallic and chloride free, dry powder blend of cements, graded fillers and chemical additives. It is to be mixed with clean water to the required consistency. The plastic grout must not bleed or segregate. The storage, handling and placement of the grout must be in strict accordance with the manufacturer’s instructions. A positive volumetric expansion up to 3% shall occur while the grout is plastic by means of a gaseous, hydrogen free system. Additionally the grout is to be formulated to compensate for longer term expansion in the hardened state. It shall exhibit Flow Characteristics when tested to AS 1478.2.2005 of 10 - 30 seconds using the flow cone procedure. The compressive strength of the grout must exceed 40MPa at 7 days and 60MPa at 28 days. Fosroc® Conbextra HF March 2014


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
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