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RARELY SEEN RESEARCH: Bridges: A Look Back—Historic Studies in Cathodic Protection: The 1990s, is a companion book to Bridges: A Look Back—Case Studies in Cathodic Protection: Substructures and Bridges: A Look Back—Case Studies in Cathodic Protection: Superstructures, both of which consist of nearly 30 years of curated legacy NACE technical papers and journal articles that cover exactly what the titles suggest.
This book consists of edited case histories, while the two original titles are compiled of the original, unabridged technical papers and journal articles.
2023 AMPP, 6 x 9 trim size, 52 pages, color
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RARELY SEEN RESEARCH: Bridges: A Look Back—Case Studies in Cathodic Protection: Superstructures consists of over 30 years of curated legacy NACE technical papers and journal articles that cover exacly what the title suggests.
It has a companion book that focuses on cathodic protection for bridge substructures.
2023 AMPP ebook
The coating of concrete floors is always challenging. Unlike walls, ceilings, tanks, bridges and other structures floors have vehicular and pedestrian traffic. This usually means that they are coated during off hours with tight schedules. Contractors need to plan the projects to meet the needs and schedules of owners. Often times this means multiple trips to the facility to review the scope of work and provide workable schedules. Required testing is generally performed prior to the scheduled start of work or after the floors are back in service.
Steel rebar in concrete is in a passive state due to the high pH of concrete. The hydroxyl (OH-) ions in highly alkaline concrete pore solution act as inhibitors and promote passive film stability, while chloride ions lead to passive film breakdown. Leckie and Uhlig1 first explained the counter effect of inhibitor action with chloride concentration. They proposed a competition between the inhibitor and chloride anions for adsorption on the passive surface.
Advances in technology have brought forth a new generation of Concrete Grinding equipment and accessories to reduce the labor hours to level a slab, prepare the surface and to optimize the surface profile for the specific coatings popular today. Understanding and applying these technology advances can greatly impact the tool selection for the job at hand.
This paper will discuss the many factors affecting the timing for concrete shrinkage (and related cracking) as well as the rate of loss of excess moisture which are not reliant on 28 days of concrete cure time. In addition, case histories will be presented evidencing successful coating applications on concrete well before 28 days of cure time versus coating problems experienced well beyond 28 days of concrete cure.
Before coating concrete, you must first know what the substrate is that you are working on. Since all concrete floors are not the same there is no one, size fits all system. In fact, many buildings will have several different types of concrete floors. Add to that the different mix designs, placement techniques and environmental conditions and you end up with a menagerie of concrete floors exhibiting a wide variety of properties.
In this multi-author book, Coatings Failures: Analysis and Solutions--Concrete, coatings experts recall days in the field when they were faced with a concrete challenge involving premature coating failures, determined a cause, and developed a solution.
The six chapters include case studies on topics such as the blistering of tilt-up concrete, sodium silicates and their role in coating and finishing failures, slab curling, and more.
2023 AMPP, 6 x 9 trim size, softbound, color
Cracks in a concrete substrate pose a challenge for coatings. Cracks that are not properly identified and addressed can lead to premature failure of the coating. This paper will discuss the forces that cause cracking in concrete structures, as well as crack types and repair techniques.
One of the greatest problems facing the flooring industry is moisture vapor emission associated with concrete floors. Coatings blister and peel, wood flooring warps and buckles, adhesives fail to perform and carpet grows mold costing millions of dollars in claims, repairs and serviceability issues. This paper will discuss the causes, evaluation and mitigation methods to address this issue.
Concrete is one of the most durable construction materials available, but all too frequently we ignore its maintenance. Many of the techniques called "coating", "protection", and corrosion mitigation are, maintenance of concrete. The life span of concrete structures can be significantly extended by pro-actively addressing deterioration and durability issues through keeping water and other deleterious materials out of concrete after it has properly cured