Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull-off Method)

Importancia y uso:

5.1 This test method determines the tensile strength of concrete near to the prepared surface, which can be used as an indicator of the adequacy of surface preparation before applying a repair or an overlay material.

5.2 When the test is performed on the surface of a repair or an overlay material, it determines the bond strength to the substrate or the tensile strength of either the overlay or substrate, whichever is weaker.

5.3 The method may also be used to evaluate the adhesive strength of bonding agents.

5.4 When the test is performed on the surface of a material applied to the substrate, the measured strength is controlled by the failure mechanism requiring the least stress. Thus it is not possible to know beforehand which strength will be measured by the test. For this reason, the failure mode has to be reported for each individual test result, and tests results are averaged only if the same failure mode occurs.

Subcomité:

C09.25

Referida por:

D8508_D8508M-25, F3706-25, C1857_C1857M-19

Volúmen:

04.02

Número ICS:

91.080.40 (Concrete structures)

Palabras clave:

adhesives; overlay materials; pull-off tensile strength; pull-off test; repair materials; tensile bond strength;