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Color and AppearanceDefoamer Theory, Application & Selection in Coatings

Concrete Coatings
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Concrete Coatings

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Recorded: March 10, 2011
Media Format: Windows Media Video (WMV)

Course Description

This VLC will discuss the current available technologies for concrete coatings as well as low VOC technologies and options. With environmental regulations and advances in dispersion and emulsion technologies, chemists and formulators are confronted with several and confusing choices. We will help provide chemists and formulators with a better understanding and assess performance balance for concrete substrates. Benefits and performance properties of the current and newer technologies are presented together with several practical options.

Concrete coatings are an extensive subject that encompasses a wide variety of protective, functional and decorative coatings. The choice of coatings is determined by the substrate (concrete) condition, environmental issues and the desire performance properties. Whatever the ultimate purpose of the coating may be it is crucial that we understand Concrete as a substrate as well as its proper surface preparation.

Concrete is most commonly used building material, it is a mixture of water, Portland cement, aggregates (sand, gravel), pozzolans (soda ash) and air (added on purpose).  Water in this mixture combines with cement to form a rigid mass called concrete. Usually concrete is strong, however environmental elements like water and UV attach the surface both physically and chemically. Concrete surfaces are porous and often exposed to water, UV and environmental conditions. Physical attacks cause cracking; concrete being porous, water is absorbed and released within the concrete and causes spalling or cracking. Therefore it is necessary to protect its surface from deterioration and contamination by applying a coating. Surface preparation is also of prime importance to the durability and adhesion of applied coatings.

In the recent years decorative coatings for concrete have gained popularity and are primarily based on acrylic emulsions. Emulsions include pure acrylic, acrylic styrene, epoxy acrylic, and vinyl acrylics. This technology also provides protective and functional value - chemical resistance, good corrosion and weathering resistance, alkali resistance, abrasion resistance, dirt pick-up resistance and good gloss. Most of the 1K pigmented commercial coatings fall in to this category.

Learning Objectives

  • Define "What is Concrete?"
  • Explain how different types of coatings for concrete differ
  • Discuss what technologies work best to protect concrete as well as improve its aesthetics
  • Share tricks for formulating concrete coatings

Target Audience

R&D personnel, technology managers, and coating and concrete specialists involved in the arena of concrete coatings manufacturing or decoration. In addition, the course is designed for suppliers to the concrete coating market, companies that formulate coatings for concrete, and individuals wanting to learn more about concrete coatings.

Course Instructor

Born and raised in Montreal, Canada, Michael Praw has a degree in Analytical Chemistry from Dawson College and another, a BS in Environmental Sciences from Concordia University. He has 21 years coatings lab experience, 18 for coatings companies. He is currently Group Leader Technical Marketing - Solventborne Resins with BASF.


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