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Technical Dayta Sheet Compedium

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 Pot Life The time for which complete packs once mixed, remain fluid will vary with temperature. Typical values are: 20°C 80 minutes 30°C 50 minutes 40°C 35 minutes Exotherm The temperature rise developed in the mixed grout is a function of the volume to surface area ratio, the ambient temperature, and the thermal conductivity of the surrounding substrates. The temperature increase of Conbextra EPHT under insulated (ie. no heat sink) conditions is typically 17°C for a 1 kg batch. Temperature Limitations During application, grouting may be carried out at ambient temperatures from 20°C - 65°C. In service, Conbextra EPHT is suitable for continuous use at temperatures up to 160°C. For applications or services outside these temperature ranges contact your local Parchem branch. Compressive Strength Gain Tested in accordance with BS4551, BS2782, BS6319 where applicable. Conbextra EPHT must be post cured at an elevated temperature before being subjected to high loads. Post curing at 80°C for 3 hours followed by 2 hours at 120°C will ensure that the Conbextra EPHT is fully cured and capable of offering maximum creep resistance. Post curing at lower temperatures is also acceptable however a longer curing period will be required. Compressive strength: 110 MPa @ 2 days @ 35°C Note: Compressive strengths stated above were measured using cube samples. Test results obtained will vary if testing is carried out to an alternative standard or sample dimensions are used. Specification Clauses Supplier specification All grouting (specify details and areas of application) must be carried out using Conbextra EPHT manufactured by Parchem and applied strictly in accordance with the manufacturer’s Technical Data Sheet. Performance specification All grouting (specify details and areas of application) must be carried out with a prepackaged epoxy grout. The grout must be mixed on site using the entire contents of a pack, base plus hardener (and aggregate if specified). The compressive strength of grout with supplied aggregate must not be less than 75 N/mm² at 7 days. Compressive strength for the grout without aggregate is to be not less than 55 N/mm². The resin systems must comply with ASTM C 881-78 Type 111, Grade 147 Fosroc® Conbextra EPHT A high temperature epoxy grout for dynamic / repetitive load applications Uses A free flowing grout where the mechanical properties and chemical resistance of the hardened grout must be of the highest order. Applications include heavy duty supports beneath crane and transporter rails, high speed turbines and centrifuges, drop forges, reciprocating machinery and other operating or test equipment subject to heavy dynamic or repetitive loads. Suitable for high temperature works up to 160°C. Advantages „ Suitable for use in high temperature operating environments „ High flexural strength and adhesion to substrate ensure excellent performance under dynamic load situations „ High early strength performance allow minimum down time and early commissioning of plant „ Simple mixing and free flowing properties ensure a convenient application and total bearing support „ Withstands attack by a wide range of chemicals, acids and alkalis „ Epoxy resin adheres to contact surfaces with no loss of bond „ High compressive, flexural and tensile strengths ensure durability and long term service „ Designed for low creep characteristics under sustained loading and elevated temperatures „ Pre-measured, factory controlled materials allow reproducible flow and mechanical properties Description Conbextra EPHT is a solvent free epoxy resin based product designed for free flow grouting of gap widths from 10 mm - 120 mm where high service temperatures are present. The components of Conbextra EPHT are supplied in the correct mix proportions designed for whole pack mixing so that flow and mechanical properties are consistant. 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. Properties Data quoted is typical for this product, but does not constitute a specification. January 2010 Page 1 January 2010


Technical Dayta Sheet Compedium
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