Standard Test Method for Pull-Off Strength of Coatings on Concrete Using Portable Pull-Off Adhesion Testers

Importancia y uso:

5.1 The pull-off strength and mode of failure of a coating from a concrete substrate are important performance properties that are used in specifications. This test method serves as a means for uniformly preparing and testing coated surfaces, and evaluating and reporting the results.

5.2 Variations in strength results obtained using different instruments, different substrates, or different loading fixtures with the same coating are possible. Therefore, it is recommended that the specific test instrument and loading fixture be mutually agreed upon between the interested parties.

5.3 It is recommended that the coating be sufficiently cured to ensure cohesive strength and adhesion. This required minimum cure time before testing should be provided by the coating manufacturer, and may require an extension due to atmospheric conditions on site (for example, low temperature, and low or high humidity).

5.4 This test method may be adapted to determine surface strength of uncoated concrete (see X2.1). Test Method C1583 is also suitable for that determination.

5.5 The objective of this method is to determine the adhesion of a coating to concrete (or adapted for surface strength as stated in 5.4) and will result in failure in the coating or near the substrate surface. If evaluating the cohesive strength of the substrate or cementitious surfacers is the purpose of the testing, or if the substrate or cementitious surfacers have low strength, then Test Method C1583 may be more suitable.

Subcomité:

D01.46

Referida por:

D6944-15R20, C1486-18R23, D5064-16AR21, D4541-22, F3513-24, D5163-16R21, D5179-16R21, D6943-15R24, D7832_D7832M-24, F3010-18R24, D4796-17R22, E3223_E3223M-20, D5498-12AR18, D5139-19, D8555-24, D6677-18R22, D6237-24, D5144-08R21

Volúmen:

06.02

Número ICS:

91.080.40 (Concrete structures)

Palabras clave:

adhesion; coatings; concrete; field; paint; portable; pull-off adhesion strength; tensile test;