DZ/T 0276.3-2015Regulation for testing the physical and mechanical properties of rock. Part 3: Test for determining the grain density of rock (English PDF)

Foreword

DZ/T 0276 "Testing Procedures for Physical and Mechanical Properties of Rocks" is divided into 31 parts.

--- Part 1. General and general provisions;

--- Part 2. Rock moisture test;

--- Part 3. Rock particle density test;

--- Part 4. Rock density test;

---Part 5. Rock water absorption test;

---Part 6. Rock hardness test;

--- Part 7. Rock gloss test;

--- Part 8. Rock antifreeze test;

---Part 9. Rock resistance to disintegration test;

--- Part 10. Rock expansion test;

--- Part 11. Rock erosion test;

--- Part 12. Rock acid and alkali resistance test;

--- Part 13. Rock specific heat test;

--- Part 14. Rock thermal conductivity test;

---Part 15. Rock breakdown voltage and breakdown strength test;

---Part 16. Rock volume resistivity and surface resistivity test;

--- Part 17. Rock radioactivity specific activity test;

---Part 18. Rock uniaxial compressive strength test;

---Part 19. Rock uniaxial compression deformation test;

--- Part 20. Rock triaxial compression strength test;

--- Part 21. Rock tensile strength test;

--- Part 22. Rock flexural strength test;

--- Part 23. Rock point load strength test;

--- Part 24. Rock acoustic wave velocity test;

---Part 25. Rock shear strength test;

--- Part 26. Rock mass deformation test (bearing plate method);

--- Part 27. Rock mass deformation test (drilling deformation method);

---Part 28. Rock mass strength test (direct shear test);

--- Part 29. Rock mass strength test (bearing plate method);

--- Part 30. Rock mass bolt load test;

--- Part 31. Rock sound wave velocity test.

This part is the third part of DZ/T 0276.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part replaces DY-94 "Testing procedures for physical and mechanical properties of rocks 4. Particle density test". This part is mainly compared with DY-94.

The technical changes are as follows.

--- Added two chapters of "terms and definitions" and "principles";

--- Increased the method of measuring the specific gravity of the sample with kerosene as a pycnometer for the test solution;

--- Removed the Lee's pycnometer method;

--- Modified the rock particle density test record table.

This part is proposed by the Ministry of Land and Resources of the People's Republic of China.

This part is under the jurisdiction of the National Land Resources Standardization Technical Committee (SAC/TC93).

1 Scope

This part of DZ/T 0276 specifies the determination of rock particle density by the pycnometer method.

This section applies to rock particle density tests in rock physical and mechanical properties tests.

2 Terms and definitions

The following terms and definitions apply to this document.

Particle density

The mass per unit volume of rock solid particles.

3 Principle

The pulverized sample is dried, placed in a pycnometer and weighed, and the test solution is added to half of the pycnometer volume to be fully vented and filled with the test solution.

The pycnometer is called the mass of the pycnometer, the test solution and the sample, and then the pycnometer is washed, and the test solution which is treated by the exhaust gas and tested at the same temperature is injected into the specific gravity.

In the bottle, weigh the pycnometer and the test solution and calculate the particle density.

4 Instruments

4.1 Crusher or porcelain mortar.

4.2 Balance. The maximum weighing value is.200g, and the reading accuracy is 0.001g.

4.3 Sample box.

4.4 Drying box.

4.5 Dryer.

4.6 Vacuum extraction equipment and boiling equipment.

4.7 Pycnometer. The volume is 100mL or 50mL. The calculation of the pycnometer should be based on the calculation correction method (Appendix C).

4.8 Constant temperature water tank.

4.9 Thermometer. The measurement range is from 0 °C to 50 °C with an accuracy of 0.5 °C.

5 Sample

5.1 The sample should be broken into rock powder after the block density test.

5.2 Sample processing is divided into two cases.

a) For rocks that do not contain magnetic minerals, they are first pulverized into rock powder by a pulverizer, all passed through a 0.25 mm analysis sieve and then sucked with a magnet.

Iron filings.

b) For rocks containing magnetic minerals, the rock should be crushed with a porcelain mortar or an agate mortar, all passing through a 0.25 mm sieve.