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Moisture is a key component of concrete. It is critical to the curing and strengthening process of the product. It is however the use or misuse of this critical component that may cause expensive and unavoidable problems over the life of the floor
Moisture is a key component of concrete. It is critical to the curing and strengthening process of the product. It is however the use or misuse of this critical component that may cause expensive and unavoidable problems over the life of the floor. Whether that moisture moves through a concrete slab via hydrostatic pressure, capillary action or from differences in vapor pressures; just the presence of this moisture in the slab may set up potential problems for the curing or the adhesion of floor coatings. This article will examine the use of desiccant dehumidification as a means to reduce the overall moisture content in the slab thus providing a proper surface to apply floor coatings. It will also look at methods for measuring moisture within a slab and provide guidelines for test selection.
Moisture related problems for non-permeable flooring systems have plagued the construction industry for decades. Lower volatile organic compounds limitations and expedited construction schedules have increased the occurrences and awareness of the issue.
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With coating and lining of concrete, while it may seem like a simple, novel task, there are always challenges. Even though concrete may be one of the largest construction materials used today, it is a complex structural matrix that can be ever changing even in a single placement. The need for coating concrete to either waterproof, or extend the life of the structure is not new to our industry.
A review of galvanized steel and painted galvanized steel processes is provided, as well as the fundamentals and requirements for painted galvanized steel products. The corrosion processes found with both galvanized steel and painted galvanized steels are discussed.