This standard specifies the terms and definitions, dimensional deviation, appearance quality and test methods for compression strength, breaking strength, block density, hollow ratio, water content, water absorption, relative water content, drying shrinkage value, softening coefficient, carbonization coefficient, frost resistance and impermeability of the concrete block and concrete perforated (hollow) brick.
This standard is applicable to small concrete hollow block, concrete solid block and concrete perforated (hollow) brick used for construction engineering (hereinafter referred to as blocks), and can provide reference for the concrete block (brick) used for water conservancy, traffic and municipal structures.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Dimensional Deviation and Appearance Quality
5 Compression Strength
6 Breaking Strength
7 Block Density and Hollow Ratio
8 Water Content, Water Absorption and Relative Water Content
9 Drying Shrinkage Value
10 Softening Coefficient
11 Carbonization Coefficient
12 Frost Resistance
13 Impermeability
14 Test Report
Appendix A (Normative) Test Method for Standard Compression Strength of Blocks
Appendix B (Normative) Compression Strength Test Method of Blocks (Coring Method)
Appendix C (Informative) Reference Mix Ratio of Cement Mortar for Specimen Plastering and Leveling
