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Publications in Coatings

Title Category Date Author
CTG1001: An Overview of the New Zealand Steelwork Corrosion Coatings Guidelogin to downloadCoatings28-Nov-07Raed El Sarraf
This article provides an overview of the New Zealand Steelwork Corrosion Coatings Guide, HERA R4-133, (Clifton and El Sarraf, 2005) as well as the topics covered in the Guide. ...
CTG1002: How to Specify a Corrosion Protection Coating Systemlogin to downloadCoatings28-Nov-07Raed El Sarraf
This article provides a summary of the steps to specify a coatings system for a desired time to first maintenance. An example is given including maintenance recommendations. ...
CTG1003: Preventable Coating Defectslogin to downloadCoatings01-May-08Raed El Sarraf
This article identifies some preventable coating problems noticed on 7 year old coated steel structural elements. The steelwork is located a couple of kilometres from the sea within an Atmospheric Corrosivity Category (ACC) at the high end of D. ...
CTG1004: Durability of Attachments to Glass-Fibre Reinforced Concrete Panelslogin to downloadCoatings07-Nov-08Kevin Cowie
Glass-fibre reinforce concrete (GRC) panels are a versatile and lightweight façade system. Various surface colours and textures are available, making GRC adaptable to numerous architectural applications. They can be designed with a face mix to achieve an appearance very similar ...
CTG1005: Primers for Steel: Their Purpose and Performancelogin to downloadCoatings12-Feb-09Michael Williams
This article addresses some problems that can occur when primers are incorrectly specified, and examines some misconceptions on their expected performance. Costly remedial rework can be incurred if a shop primer is damaged or exposed to exterior weather conditions ...
CTG1006: Steel Corrosion Rates in Water and Soillogin to downloadCoatings20-Oct-09Kevin Cowie
Guidance on typical corrosion steel rates in water and soil for design use is provided in the recently published NZS3404.1 Steel Structures Standard - Materials, Fabrication, and Construction (SNZ,2009). The design rates given are those to be used for ...
CTG1007: Galvanic/Dissimilar Metal Corrosionlogin to downloadCoatings20-Sep-10Kevin Cowie
Galvanic corrosion is the additional corrosion that occurs when dissimilar metals are in contact in the presence of an electrolyte. The corrosion of a metal, the anode, results from the positive current flowing from the anode to the ...