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TB/T 2140-2008 PDF English

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TB/T 2140-2008: Railway ballast
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Status: Valid

TB/T 2140: Historical versions

Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
TB/T 2140-200875 Add to Cart Auto, 9 seconds. Railway ballast Valid
TB/T 2140-1990439 Add to Cart 4 days (Railway gravel ballast) Obsolete

Similar standards

TB/T 2140.2   TB/T 1979   TB/T 3568.2   

TB/T 2140-2008: Railway ballast

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/TBT2140-2008
TB RAILWAY INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 45.040 S 05 Replacing TB/T 2140-1990 Railway ballast Issued on. NOVEMBER 14, 2008 Implemented on. DECEMBER 1, 2008 Issued by. Ministry of Railways of the People's Republic of China

Table of Contents

Foreword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 4 4 Technical requirements... 5 5 Test report... 9 6 Transport and storage... 11 Annex A (Informative) Ballast quality certificate... 12

Foreword

This Standard replaces "Railway Ballast" (TB/T 2140-1990). Compared with TB/T 2140-1990, this Standard has the following main technical changes. - the scope was modified, so as to be applicable to joint venture railways and local railways as well; - terminologies and definitions were added; - second grade ballast was deleted; - special grade ballast for high speed railways and passenger dedicated lines were added; - size grading requirements for first grade ballast of existing railways were added; size grading of the previous first grade ballast was changed to the that of first grade ballast of newly-built railways; - appropriate adjustment was made to the index value of crushing rate of ballast aggregate; - strict requirements were improved to ballast transportation and storage, so as to ensure the grading of upper track ballast conforms to the relevant requirements of this Standard. Appendix A of this Standard is informative. This Standard was proposed by and shall be under the jurisdiction of the Standards and Metrology Research Institute of MOR. Main drafting organization of this Standard. China Academy of Railway Sciences. Main drafters of this Standard. Xu Yongxian, Qie Luchao, Zeng Shugu and Zhang Wensheng. Version of standard substituted by this Standard is. - TB/T 2140-1990. Railway ballast

1 Scope

This Standard specifies the technical requirements, test rules, transportation, storage and acceptance of railway ballast (hereinafter referred to as ballast). This Standard is applicable to ballast for national railways, joint venture railways, and local railways. Railways for industrial and mining enterprises may also refer to.

2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies. TB/T 2328, Testing Method for Railway Ballast (All Parts)

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply. 3.1 Acicular index The mass percentage of particle with length (maximum size) greater than 1.8 times of average particle size. 3.4 Surface cleanness of railway ballast The mass percentage of sundries (dust, soil, etc.) on the surface of railway ballast products.

4 Technical requirements

4.1 Raw material of ballast Ballast shall be produced from mountain stones via crushing and screening, and all the particle surfaces shall be crushing surface. 4.2 Ballast material index Material performances of all grades of ballasts shall be in accordance with the corresponding requirements listed in Table 1. 4.3 Ballast process index 4.3.1 Size grading 4.3.2.4 The content of powders less than 0.1mm in particle size in unwashed first grade ballast shall not be greater than 1%.

5 Test report

5.1 Inspection classification Ballast shall be subjected to resource material inspection, production inspection and delivery inspection. 5.2 Resource material inspection 5.3 Production inspection 5.3.1 One production inspection shall be carried out when the quarry produces 1.5×105 m3 ballast (for the quarry with annual output less than 1.5×105 m3 ballast, one production inspection shall not be carried out within a year) according to the contents of all items in Table 1. 5.4 Delivery inspection and acceptance 5.4.1 Before loading, quarry quality inspectors are responsible for organizing product delivery inspection, including ballast size grading, particle shape and cleanliness index, and fill in ballast quality certificate. For the products not conforming to standard, quality inspectors are entitled to refuse loading.

6 Transport and storage

6.1 Before loading, vehicles for transporting ballast products shall be cleaned to be free from such sundries as remained soil and dust. The surface of highway transportation of ballast shall be covered well. 6.4 Quarry and construction organization shall take the following effective measures to prevent or reduce the separation of ballast particles and ensure the grading of ballast accord with the relevant requirements in 4.3.1 of this Standard.

Annex A

(Informative) Ballast quality certificate A.1 See Table A.1 for the quality certificate pattern of special grade ballast products. TB/T 2140-2008 TB RAILWAY INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 45.040 S 05 Replacing TB/T 2140-1990 Railway ballast Issued on. NOVEMBER 14, 2008 Implemented on. DECEMBER 1, 2008 Issued by. Ministry of Railways of the People's Republic of China

Table of Contents

Foreword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 4 4 Technical requirements... 5 5 Test report... 9 6 Transport and storage... 11 Annex A (Informative) Ballast quality certificate... 12

Foreword

This Standard replaces "Railway Ballast" (TB/T 2140-1990). Compared with TB/T 2140-1990, this Standard has the following main technical changes. - the scope was modified, so as to be applicable to joint venture railways and local railways as well; - terminologies and definitions were added; - second grade ballast was deleted; - special grade ballast for high speed railways and passenger dedicated lines were added; - size grading requirements for first grade ballast of existing railways were added; size grading of the previous first grade ballast was changed to the that of first grade ballast of newly-built railways; - appropriate adjustment was made to the index value of crushing rate of ballast aggregate; - strict requirements were improved to ballast transportation and storage, so as to ensure the grading of upper track ballast conforms to the relevant requirements of this Standard. Appendix A of this Standard is informative. This Standard was proposed by and shall be under the jurisdiction of the Standards and Metrology Research Institute of MOR. Main drafting organization of this Standard. China Academy of Railway Sciences. Main drafters of this Standard. Xu Yongxian, Qie Luchao, Zeng Shugu and Zhang Wensheng. Version of standard substituted by this Standard is. - TB/T 2140-1990. Railway ballast

1 Scope

This Standard specifies the technical requirements, test rules, transportation, storage and acceptance of railway ballast (hereinafter referred to as ballast). This Standard is applicable to ballast for national railways, joint venture railways, and local railways. Railways for industrial and mining enterprises may also refer to.

2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies. TB/T 2328, Testing Method for Railway Ballast (All Parts)

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply. 3.1 Acicular index The mass percentage of particle with length (maximum size) greater than 1.8 times of average particle size. 3.4 Surface cleanness of railway ballast The mass percentage of sundries (dust, soil, etc.) on the surface of railway ballast products.

4 Technical requirements

4.1 Raw material of ballast Ballast shall be produced from mountain stones via crushing and screening, and all the particle surfaces shall be crushing surface. 4.2 Ballast material index Material performances of all grades of ballasts shall be in accordance with the corresponding requirements listed in Table 1. 4.3 Ballast process index 4.3.1 Size grading 4.3.2.4 The content of powders less than 0.1mm in particle size in unwashed first grade ballast shall not be greater than 1%.

5 Test report

5.1 Inspection classification Ballast shall be subjected to resource material inspection, production inspection and delivery inspection. 5.2 Resource material inspection 5.3 Production inspection 5.3.1 One production inspection shall be carried out when the quarry produces 1.5×105 m3 ballast (for the quarry with annual output less than 1.5×105 m3 ballast, one production inspection shall not be carried out within a year) according to the contents of all items in Table 1. 5.4 Delivery inspection and acceptance 5.4.1 Before loading, quarry quality inspectors are responsible for organizing product delivery inspection, including ballast size grading, particle shape and cleanliness index, and fill in ballast quality certificate. For the products not conforming to standard, quality inspectors are entitled to refuse loading.

6 Transport and storage

6.1 Before loading, vehicles for transporting ballast products shall be cleaned to be free from such sundries as remained soil and dust. The surface of highway transportation of ballast shall be covered well. 6.4 Quarry and construction organization shall take the following effective measures to prevent or reduce the separation of ballast particles and ensure the grading of ballast accord with the relevant requirements in 4.3.1 of this Standard.

Annex A

(Informative) Ballast quality certificate A.1 See Table A.1 for the quality certificate pattern of special grade ballast products. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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