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TB/T 2328.5-2008 English PDF (TBT2328.5-2008)

TB/T 2328.5-2008 English PDF (TBT2328.5-2008)

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TB/T 2328.5-2008: Test Method for Railway Ballast ?€? Part 5: Crushing Rate Test for Ballast Aggregate

This Part specifies the test method and calculation for the crushing rate of the railway ballast aggregate. This Part is applicable to the crushing rate test for the railway ballast aggregate.
TB/T 2328.5-2008
TB
NATIONAL RAILWAY INDUSTRY STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
ICS 45.040
S 05
Test Method for Railway Ballast ?€?
Part 5. Crushing Rate Test for Ballast Aggregate
ISSUED ON. NOVEMBER 14, 2008
IMPLEMENTED ON. DECEMBER 01, 2008
Issued by. Ministry of Railways of PRC
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Terms and Definitions ... 5
3 Test Method ... 5
4 Calculation ... 6
Foreword
TB/T 2328 Test Method for Railway Ballast can be divided into the following 19 parts. --- Part 1. Test for Abrasion Loss Rate of Los Angeles;
--- Part 2. Test for the Impact Ductility of Standard Aggregate;
--- Part 3. Dry Milling Test for Abrasive Hardness Coefficient K of Stone Material; --- Part 4. Crushing Rate Test for Standard Aggregate;
--- Part 5. Crushing Rate Test for Ballast Aggregate;
--- Part 6. Permeability Coefficient Test;
--- Part 7. Compressive Strength Test for Stone Powder Mould;
--- Part 8. Liquid Limit Test for Stone Powder;
--- Part 9. Plastic Limit Test for Stone Powder;
--- Part 10. Combined Liquid and Plastic Limit Test for Stone Powder;
--- Part 11. Loss Rate Test for the Soaking of Sodium Sulfate Liquor;
--- Part 12. Density Test for Stone Material;
--- Part 13. Bulk Density Test for Stone Material;
--- Part 14. Ballast Size Grading Test;
--- Part 15. Test for Acicular Index and Sheet index;
--- Part 16. Test for the Content of Weathering Particles and Other Miscellaneous Stone;
--- Part 17. Test for the Content of Powder with Grain Size below 0.1mm; --- Part 18. Test for the Cleanliness of Particle Surface;
--- Part 19. Standard for the Ballast Mesh Sieve.
This Part belongs to Part 5 of TB/T 2328.
This Part replaces TB/T 2328.5-1992 Test Method for Railway Ballast ?€? Part 5. Crushing Rate Test for Ballast Aggregate.
Compared with TB/T 2328.5-1992, this Part has the major changes as follows. Test Method for Railway Ballast ?€?
Part 5. Crushing Rate Test for Ballast Aggregate
1 Scope
This Part specifies the test method and calculation for the crushing rate of the railway ballast aggregate.
This Part is applicable to the crushing rate test for the railway ballast aggregate. 2 Terms and Definitions
The following terms and definitions are applicable to this Part.
2.1 Ballast collect stuff crunch rate
The grading change parameter after the ballast aggregate specimen is crushed according to the specified mould and load.
3 Test Method
3.1 Equipment and machinery
3.1.1 Pressure tester. 1000kN.
3.1.2 Mould for crushing rate of ballast aggregate can refer to Figure 1. Figure 1 -- Mould for Crushing Rate of Ballast Aggregate
Unit. mm

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