EN 1062-7:2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Sampling
7 Test pieces
   7.1 Substrate
   7.2 Number and dimensions
   7.3 Coatings and conditioning of the substrates
   7.4 Cracking of the test pieces
8 Procedure
   8.1 Preparation of the test apparatus
   8.2 Test temperature
   8.3 Measurement of the crack-bridging properties of the
       coating
       8.3.1 Preparation
       8.3.2 Method A: Continuous opening of the crack
       8.3.3 Method B: Periodical change of the crack
9 Expression of results
   9.1 Method A: Continuous opening of the crack
   9.2 Method B: Periodical change of the crack width
10 Precision
11 Test report
Annex A (normative) Crack-bridging properties - Classification
                      and test conditions for method A
Annex B (normative) Crack-bridging properties - Classification
                      and test conditions for method B
Annex C (informative) Examples of suitable test procedures
      C.1 Static tensile test
          C.1.1 Principle
          C.1.2 Test pieces
          C.1.3 Procedure
      C.2 Static bending test
          C.2.1 Principle
          C.2.2 Test pieces
          C.2.3 Procedure
      C.3 Dynamic tensile test 1
          C.3.1 Principle
          C.3.2 Test pieces
          C.3.3 Procedure
      C.4 Dynamic tensile test 2
          C.4.1 Principle
          C.4.2 Test pieces
          C.4.3 Procedure
      C.5 Dynamic tensile test 3
          C.5.1 Principle
          C.5.2 Test pieces
          C.5.3 Procedure
      C.6 Dynamic bending test
          C.6.1 Principle
          C.6.2 Test pieces
          C.6.3 Procedure
Bibliography

This European Standard specifies two methods for determining the crack-bridging properties of coating materials, coating systems and related products, intended for exterior masonry and concrete. It should be read in conjunction with EN 1062-1 and prEN 1504-2.It also gives a classification of coatings on the basis of their crack-bridging properties.NOTEThe method to be used for a particular product or system should be agreed between the interested parties.