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Problem Solving Forum (43)


How can it be determined if moisture within a CMU wall is causing repeated coating failure? If so, can the source of moisture entry be accurately identified for correction?


How can you determine if a concrete substrate is in suitable condition for application of an acid stain?


What kind of initial treatment is the best defense against graffiti for rough-surfaced concrete block (CMU)?


Is a sealer coat always required for coating systems applied to concrete surfaces that will be exposed to marine environments?


What are the most effective procedures for protecting steel and adjacent concrete together?


Which factors are most important in selecting coatings for new concrete?


What tests should be run to determine if an existing concrete bridge pier needs rehabilitation or repair before cleaning and coating?


RH probes are commonly used in concrete floors to determine moisture content. Can they be used in CMU walls or pre-cast walls?


If the walls of single-wythe CMU with core fill insulation become saturated, can they be adequately dried out for painting? If so, how?


What are the most effective procedures for protecting steel and adjacent concrete together?


When is it necessary to install sealant between the base of building walls and concrete sidewalks or pavement to prevent moisture from wicking up the wall? How does the climate affect this decision?


How do you determine the best type of coating for repainting a block or concrete building?


What are the most effective procedures for protecting steel and adjacent concrete?


Under what conditions should you apply a resurfacing mortar to new, below-grade vertical concrete scheduled to receive a high-build, protective lining system for chemical containment or immersion service?


How can you determine if a concrete substrate is in suitable condition for application of an acid stain?


How does one determine if concrete is sound enough to receive a thick-film coating?


What is the best way to assure compliance with specified dry film coating thickness requirements on vertical concrete?


What is the best way to assure compliance with specified dry film coating thickness requirements on vertical concrete?


What should be considered in replacing a wooden deck with one made of concrete, in terms of the options for appearance, color and cost?


During a week of heavy rain, we painted the interior walls of a heated concrete building. On the interior of walls that had an outside exposure, the paint blistered badly a week after the rain subsided. Could the rain have caused the blistering and, if so, how?


How do you prepare an oil-stained, bare concrete floor for coating?


How can I determine when concrete has cured sufficiently to be coated, besides waiting the 28 days typically specified?


What’s the best way to prevent corrosion of reinforcing bar in concrete?


What types of measures can be taken on or around metal pipes or columns that penetrate concrete or asphalt paving to reduce corrosion at the interface?


How do you determine the best type of paint to use when repainting a block or concrete building?


What are the most effective procedures for protecting steel and adjacent concrete together?


What tests should be run to determine if an existing concrete bridge pier needs rehabilitation or repair before cleaning and coating?


What are the most effective procedures for protecting steel and adjacent concrete together?


How do you protect concrete against microbiologically influenced corrosion?


What’s the best way to prevent corrosion of reinforcing bar in concrete?


When applying a 100% solids, fast-curing polyurea coating on concrete, what is the best method for verifying that the proper thickness has been applied?


I need to embed a metallized culvert liner on concrete. I've been told I have to paint it to avoid adhesion problems between the metal liner and the concrete. Is this true and, if so, what type of coating is best?


How can you determine if a concrete substrate is in a suitable condition for application of an acid stain?


How is it possible to determine if concrete is sound enough to receive a thick-film coating?


How do admixtures to concrete (hardeners, anti-dust compounds, etc.) affect coating adhesion? What can be done to eliminate or minimize negative effects?


How much detail should be included in a specification for the surface preparation and painting of a parking garage exterior that includes tilt-up and structural concrete substrates?


What are the pros and cons of using shotblasting to remove a coating system from a concrete floor?


I've seen claims of extreme durability for a new concrete floor coating material exposed to heavy foot traffic. Is there a quick test to determine the validity of these claims?


What type of material should I use to achieve bright, bold colors on a concrete floor with heavy foot traffic?


Animal fat in slaughterhouses often penetrates concrete surfaces. If the fat is not removed before the concrete is coated, the fat can cause the coating to fail. How do you identify and remove the contamination before coating the concrete?


What are the alternatives for removing mildew from previously uncoated concrete block exteriors before coating?


What is the best method of testing for moisture content in concrete masonry unit (CMU) walls prior to application of coatings?


What should be considered in replacing a wooden deck with one made of concrete, in terms of the options for appearance, color, cost? I've seen articles about stains, integral coloring, and other decorative treatments, as well as lighter-weight concrete, but it's not easy to compare and judge the options.


 
 
   

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