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This standard is issued under the fixed designation D ; the number 1 This practice is under the jurisdiction of ASTM Committee D on Protective. ASTM D Standard Practice for Surface Cleaning Concrete for Coating. ASTM D (Plastic sheet test): Place plastic sheet on concrete stab for 24 hours. o ASTM-D Standard Practice for Surface Cleaning Concrete for.

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Clean steel using one or more of the nine surface preparations described below. Allow the coating to dry at least one week before testing for adhesion.

We have no amendments or corrections for this standard. High-pressure water blasting is commonly used to clean substrates.

Conco Paints – Surface Preparation

Plan accordingly to handle the runoff. Repeat until the surface is hard. Caulk should be applied after priming. Visible deposits of grease or oil must be removed prior to blast cleaning by any method specified in SSPC-SP 1 or other agreed upon methods.

Ensure that the surface is clean and free of any loose stucco, and that surface pH is between 6 and 9. When viewed without magnification, a Near-White Blast Cleaned surface should be free of any visible grease, oil, dust, dirt, mill scale, paint, rust, oxides, corrosion products, and other foreign matter, with the exception of staining. Wood must be clean and dry. Vacuum cleaning, broom cleaning, water cleaning, air blast cleaning, and steam cleaning are suitable as outlined in ASTM D Treat textured, soft, porous, or powdery plaster with a solution of 1 pint household vinegar to 1 gallon of water.

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Surface Preparation Proper surface preparation can improve the outcome of your coating system. Ensure that all surface contamination has been removed by washing with an appropriate cleaner. The surface to be coated must be clean and free of contaminants, oil, loose cement, mortar, and grease. Following these guidelines will help ensure sufficient adhesion of the coating and can help prolong the life of the coating system.

Concrete curing compounds, hardeners, and form release agents may not be compatible with recommended coatings. Rags and cleaning solution should be changed frequently so that deposits of oil and grease are not spread over additional areas in the cleaning process.

Sand surfaces smooth, taking care to sand with the grain. For concrete and steel substrates, a prepared surface is typically one that is clean, dry, structurally sound, and possesses a certain surface profile—the four pillars of good surface preparation. Allow to dry and cure thoroughly for at least 30 days prior to painting. If necessary, pressure clean with a minimum of psi to remove all dirt, dust, oil, grease, laitance, loose particles, foreign material, and peeling or defective coatings.

As the voice of the U.

Standard Practice for Surface Cleaning Concrete for Coating

Maintenance painting will frequently not permit or require c4258 removal of all old coatings prior to repainting. When viewed without magnification, a White Metal Blast Cleaned surface should be free of any visible grease, oil, dust, dirt, mill scale, paint, rust, oxides, corrosion products, and other foreign matter.

Adherent mill scale, paint, and rust are not able to be sstm by this process. Tape and cover joints with a joint compound. The surface may be painted after 30 days if recommended procedures for applying stucco are followed, and normal drying conditions exist. Some composition boards may emit a waxy material that must be removed with a solvent prior to coating.

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All loose rust, loose mill scale, loose and other detrimental foreign matter can be removed by power tool cleaning. Mill scale, paint, and rust that is c4258 adhered to the surface may remain even after Brush-Off Blast Cleaning. Surface preparation methods as outlined in ASTM D are required if the coating system is incompatible.

When viewed without magnification, a Brush-Off Blast Cleaned surface should be free of any visible grease, oil, dust, dirt, loose mill scale, loose paint, and loose rust. Please first verify your email before subscribing to alerts. Rinse thoroughly and allow to dry. Profiled Increasing the surface area of the substrate by imparting a profile with some tooth gives lining systems more to grab on to. There was so much to do before I ever opened a can of paint.

Surface asym be free of laitance, concrete dust, dirt, form release agents, moisture atm membranes, loose cement, and hardeners.

ASTM D – 05() Standard Practice for Surface Cleaning Concrete for Coating

So many corrosion protection lining projects succeed or fail with the quality of the surface preparation achieved before the lining is even installed. Proper surface preparation can improve the outcome of your coating system. Procedures include broom cleaning, vacuum cleaning, air blast cleaning, water cleaning, detergent water cleaning, and steam cleaning.