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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 Installation Instructions Installation of the Galvashield LJ system can be accomplished with relative ease. The first step is to remove any deteriorated concrete with pneumatic hammers and any marine growth (if applicable) using methods approved by the engineer. Once the corroded steel is exposed and all loose concrete has been removed, the surface of the column is prepared by grit or hydro blasting to clean the concrete and remove all corrosion products from the steel. An electrical connection must be made to the reinforcing steel that is to be protected. Electrical connection can be made to exposed reinforcing steel. If no exposed steel is present, a concrete excavation will be required to make the reinforcing steel connection. In order for the system to work properly, the steel reinforcement must be electrically continuous. If not, electrical continuity must be established. The galvanic jackets may be supplied pre-assembled or the optional fiberglass jacket and galvanic anode components may be provided separately. If the galvanic anodes are supplied separately, they are installed parallel to the existing concrete surface using the fasteners and spacers provided. If specified, the bulk anode is installed below the low tide line. All wiring from the zinc anodes and the bulk anode are run up inside the jacket into the junction box. The jacket component of the Galvashield LJ system is a fiberglass jacket assembly with tongue and groove joint(s). The jacket is set on a temporary bottom form and is positioned around the column and the zinc anodes. The tongue and groove joint is sealed using a 100% solids epoxy adhesive and stainless steel fasteners. To complete the installation, the fiberglass Galvashield LJ form is braced and filled with approved cement-based grout or concrete to completely encase the zinc anodes. Once the grout is cured, the lead wires from the anode in the jacket, bulk zinc anode and reinforcing steel connection are connected in the junction box and the system becomes immediately operational. The continuous flow of current from the zinc anodes provides galvanic corrosion protection to the reinforcing steel. Precautions Galvashield LJs, if appropriate, may be part of an overall structure rehabilitation program to extend the service of life of corroding columns and piles. Where structural damage exists, consult a structural engineer. Galvashield LJs may be used in conjunction with Parchem’s extensive line of galvanic corrosion protection products to protect other portions of the structure. For more information, on corrosion mitigation strategies and options, contact Parchem. PVC junction box with connection wires to reinforcing steel, zinc anodes and bulk anodes Wire connection to zinc anodes Zinc anode strips pre-installed inside of fibreglass jacket Fibreglass jacket filled with sand-cement grout or concrete Typical high tide level Mean low tide level 610mm 22kg cast bulk zinc anode (optional) 100mm Jacket height as per specifications 50-100mm depending on anode dimensions Health and Safety As with all cement-based materials, contact with moisture can release alkalis which may be harmful to exposed skin. Activated Galvashield LJ anodes should be handled with suitable gloves and other personal protective equipment in accordance with standard procedures for handling cementitious materials. Important notice A Safety Data Sheet (SDS) and Technical Data Sheet (TDS) are available from the Parchem website or upon request from the nearest Parchem sales office. Read the SDS and TDS carefully prior to use as application or performance data may change from time to time. In emergency, contact any Poisons Information Centre (phone 13 11 26 within Australia) or a doctor for advice. Product disclaimer This Technical Data Sheet (TDS) summarises our best knowledge of the product, including how to use and apply the product based on the information available at the time. You should read this TDS carefully and consider the information in the context of how the product will be used, including in conjunction with any other product and the type of surfaces to, and the manner in which, the product will be applied. Our responsibility for products sold is subject to our standard terms and conditions of sale. Parchem does not accept any liability either directly or indirectly for any losses suffered in connection with the use or application of the product whether or not in accordance with any advice, specification, recommendation or information given by it. Parchem Construction Supplies Pty Ltd 7 Lucca Road, Wyong NSW 2259 Phone: 1300 737 787 www.parchem.com.au ABN 80 069 961 968 Distributed in New Zealand by: Concrete Plus Ltd 23 Watts Rd, Sockburn 8042 Ph: 03 343 0090 Page 2 93 Galvashield® LJ


Technical Dayta Sheet Compedium
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