GB/T 2015-2017 PDF EnglishUS$150.00 · In stock · Download in 9 seconds
GB/T 2015-2017: White Portland Cement Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 2015: Historical versions
GB/T 2015-2017: White Portland Cement---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/GBT2015-2017GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 91.100.10 Q 11 Replacing GB/T 2015-2005 White Portland Cement Issued on: OCTOBER 14, 2017 Implemented on: SEPTEMBER 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 5 4 Components and Materials ... 5 5 Grading and Code ... 6 6 Technical Requirements ... 6 7 Test Methods ... 7 8 Inspection Rules ... 8 9 Packaging, Mark, Transportation and Storage ... 10 Appendix A (Normative) White Portland Cement Whiteness Test Method ... 12 White Portland Cement1 ScopeThis Standard specifies the terms, definitions, components, materials, grading, code, technical requirements, test methods, inspection rules, packaging, mark, transportation and storage of white Portland cement. This Standard is applicable to the production and application of white Portland cement.2 Normative ReferencesThe following documents are indispensable to the application of this Standard. In terms of references with a specified date, only versions with a specified date are applicable to this Standard. The latest version (including all the modifications) of references without a specified date is also applicable to this Standard. GB/T 176 Method for Chemical Analysis of Cement GB/T 1345 The Test Sieving Method for Fineness of Cement GB/T 1346 Test Methods for Water Requirement of Normal Consistency, Setting Time and Soundness of the Portland Cement GB/T 5483-2008 Natural Gypsum GB/T 5950-2008 Method for Measurement of Whiteness of Building Materials and Non-metal Mineral Products GB/T 6566 Limit for Radionuclides in Building Materials GB/T 9774 Sacks for Packing Cement GB/T 12573 Sampling Method for Cement GB/T 17671 Method of Testing Cements - Determination of Strength GB/T 17749-2008 Methods of Whiteness Specification GB/T 21371 By-product Gypsum Used in Cement GB/T 26748 Cement Grinding Aids GB 31893 Limit and Determination of the Water-soluble Chromium (VI) Content for Cement5 Grading and Code5.1 White Portland cement shall be divided into Grade-32.5, Grade-42.5 and Grade- 52.5 in accordance with the strength. 5.2 White Portland cement shall be divided into Grade-1 and Grade-2 in accordance with the whiteness; its code shall be PW-1 and PW-2 respectively.6 Technical Requirements6.1 Chemical Composition 6.1.1 Sulphur trioxide Sulphur trioxide shall not exceed 3.5%. 6.1.2 Water-soluble hexavalent chromium (VI) in cement Water-soluble hexavalent chromium in cement shall not exceed 10 mg/kg. 6.1.3 Chloride ion (selective indicator) Chloride ion shall not exceed 0.06%. 6.1.4 Alkali content (selective indicator) Alkali content in cement shall be expressed in the calculation of Na2O + 0.658K2O. If active aggregate is adopted and users demand the supply of low-alkali cement, alkali content in cement shall be not more than 0.60%, or it shall be negotiated and determined by the buyer and the seller. 6.2 Physical Properties 6.2.1 Fineness The residue on 45 μm square-hole sieve shall be not more than 30.0%. 6.2.2 Soundness of boiling method The soundness of boiling method shall be qualified. 6.2.3 Setting time The initial setting time shall be no less than 45 min; the ultimate setting time shall be no more than 600 min. 6.2.4 Whiteness Whiteness shall be tested in accordance with the stipulations in GB/T 5950-2008. Standard whiteboard, instruments and instrument calibration, sample storage and preparation, result calculation and treatment shall comply with Appendix A. 7.6 Strength Strength shall be tested in accordance with the stipulations in GB/T 17671. 7.7 Radioactivity Radioactivity shall be tested in accordance with the stipulations in GB 6566.8 Inspection Rules8.1 Serial Number and Sampling Before exit factory, cement shall be numbered and sampled in accordance with the same grade of whiteness and strength. Bagged cement and bulk cement shall be respectively numbered and sampled. The serial number of cement shall comply with the following stipulations of the annual output of cement factory. ---Cement factory with over 600,000 t of annual output. a serial number shall be constituted of less than 800 t; ---Cement factory with 100,000 t ~ 600,000 t of annual output. a serial number shall be constituted of less than 500 t; ---Cement factory with less than 100,000 t of annual output. a serial number shall be constituted of less than 200 t. Cement shall be sampled in accordance with the stipulations in GB/T 12573. Manual or automatic sampling can be adopted; the total weight shall be at least 12 kg. When the capacity of tools transporting bulk cement exceeds the exit-factory number tonnage stipulated by the enterprise, the tonnage of the number can be allowed to exceed the tonnage stipulated by sampling. 8.2 Cement Exit-factory When it is confirmed that cement complies with the various technical requirements and the requirements for packaging quality, it can be allowed to exit factory. 8.3 Cement Inspection 8.3.1 Exit-factory inspection Exit-factory inspection items are the content stipulated in 6.1.1, 6.2.1, 6.2.2, 6.2.3, 6.2.4 and 6.2.5. inspection result of the sampling of material object; or the test report of the same serial number of cement released by cement factory. The buyer and the seller shall negotiate and determine which method of acceptance check shall be adopted; this content shall be indicated in the contract or agreement. 8.6.2 When the inspection result of the sampling of material object is taken as the basis, the buyer and the seller shall also take a sample and seal the package before delivery or on the site of delivery. The sampling method shall comply with GB/T 12573; the sampling size is 24 kg, which shall be divided into two equal parts. One part shall be preserved by the seller for 40 days; the other part shall be inspected by the buyer in accordance with the items and methods stipulated in this Standard. Within 40 days, when the buyer believes that the product quality cannot comply with the requirements in this Standard after inspection and the seller believes it is controversial, both parties shall submit the other sample preserved by the seller to a provincial-level or above cement quality supervision and inspection institution that is nationally acknowledged for arbitration and inspection. 8.6.3 When the test report of the same serial number of cement released by cement factory is taken as the basis of acceptance check, the buyer shall take a sample from the same serial number of cement before shipment or during delivery. After both parties seal the package, it shall be preserved by the seller for 90 days, or acknowledge the preserved sample independently taken, sealed and preserved for 90 days by the seller. Within 90 days, when the buyer has doubts about the cement quality, both parties shall submit the jointly sealed sample to a provincial-level or above cement quality supervision and inspection institution that is nationally acknowledged for arbitration and inspection.9 Packaging, Mark, Transportation and Storage9.1 Packaging Cement can be in bags or bulk. The net weight of each bag of cement shall be 50 kg and no less than 99% of the marked weight. In a random sampling of 20 bags, the weight (including the packaging bag) shall be no less than 1,000 kg. Other forms of packaging shall be negotiated and determined by both parties. However, relevant requirements of packaging quality shall comply with the above-mentioned stipulations. The packaging of cement shall comply with the stipulations in GB/T 9774. 9.2 Mark The packaging of cement shall clearly indicate implementation standard, cement type, code, strength grade, producer’s name, production license (QS) and serial number, exit-factory number, date of packaging and net weight. On both sides of the ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 2015-2017 be delivered?Answer: The full copy PDF of English version of GB/T 2015-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 2015-2017_English with my colleagues?Answer: Yes. 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