1.0.1 This Specification is formulated with a view to promoting the development of the concrete strength testing technology with drilled core and to improving the reliability of testing results.
1.0.2 This Specification is applicable to testing the strength of ordinary concrete with strength no larger than 80MPa in the structure by using drilled cores.
1.0.3 In addition to those specified in this Specification, the testing of concrete strength with drilled core still shall comply with those specified in the current relevant standards of the nation.
1 General Provisions 1
2 Terms and Symbols 2
3 Strength Test 4
3.1 General Requirements 4
3.2 Determination of Estimated Strength of Concrete with Dilled Cores 4
3.3 Drilled Core Correction Method 5
4 Major Equipments 7
5 Core Drilling 8
6 Processing of Core or Technical Requirements of Specimen 9
7 Test of Core Specimen and Calculation of Compressive Strength 11
Appendix A Test Method for Concrete Tensile Strength 12
Appendix B Estimate Interval Coefficient Table 14
Explanation of Wording of in this Specification 15
