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GB/T 26751-2011 English PDF (GBT26751-2011)

GB/T 26751-2011 English PDF (GBT26751-2011)

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GB/T 26751-2011: Ground granulated electric furnace phosphorous slag powder used for cement and concrete
This Standard specifies the terms and definitions, compositions and materials, technical requirements, test methods, inspection rules, package, marking, transportation and storage, etc. of the ground granulated electric furnace phosphorous slag powder. This Standard is applicable to the ground granulated electric furnace phosphorous slag powder used as the cement mixture and concrete additive.
GB/T 26751-2011
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.10
Q 12
Ground Granulated Electric Furnace Phosphorous
Slag Powder Used for Cement and Concrete
ISSUED ON. JULY 20, 2011
IMPLEMENTED ON. MARCH 01, 2012
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Compositions and Materials ... 5
5 Technical Requirements ... 5
6 Test Methods ... 6
7 Inspection Rules ... 7
8 Package, Marking, Transportation and Storage ... 9
Appendix A (Normative) Test Method for Activity Index and Fluidity Ratio of Phosphorus Slag Powder ... 11
Ground Granulated Electric Furnace Phosphorous
Slag Powder Used for Cement and Concrete
1 Scope
This Standard specifies the terms and definitions, compositions and materials, technical requirements, test methods, inspection rules, package, marking, transportation and storage, etc. of the ground granulated electric furnace phosphorous slag powder.
This Standard is applicable to the ground granulated electric furnace phosphorous slag powder used as the cement mixture and concrete additive.
2 Normative References
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document.
GB 175 Common Portland Cement
GB/T 208 Standard Test Method for Cement Density
GB/T 2419 Test Method for Fluidity of Cement Mortar
GB/T 5483 Natural Gypsum
GB 6566 Limit for Radionuclides in Building Materials
GB/T 6645 Granulated Electric Furnace Phosphorous Slag Used for Cement
GB/T 8074 Testing Method for Specific Surface of Cement – Blaine Method GB 9774 Sacks for Packing Cement
GB/T 12573 Sampling Method for Cement
GB/T 17671 Method of Testing Cements – Determination of Strength (ISO Method) GB/T 18046-2008 Ground Granulated Blast Furnace Slag Used for Cement and Concrete
GB/T 26748 Cement Grinding Aids
JC/T 1088 Methods for Chemical Analysis of Granulated Electric Furnace
Phosphorous Slag
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply. 3.1 Ground granulated electric furnace phosphorous slag powder
The powder with certain fineness mainly-ground the granulated electric furnace phosphorus slag, together with small amount of gypsum; which is called ground granulated electric furnace phosphorous slag powder, hereinafter referred to as phosphorous slag powder.
4 Compositions and Materials
4.1 Granulated electric furnace phosphorous slag
It shall meet the requirements of GB/T 6645.
4.2 Gypsum
It shall meet the requirements for Grade-G or Grade-M Class-2 (inclusive) gypsum or mixed gypsum specified in GB/T 5483.
4.3 Grinding aid
It shall conform to the provisions of GB/T 26748; the amount of its addition shall not exceed 0.5% total mass of the phosphorus slag powder.
5 Technical Requirements
The phosphorus slag powder shall conform to the technical specifications in Table 1. 2008.
6.7 Radioactivity
The test shall be performed as required in GB 6566.
7 Inspection Rules
7.1 Numbering and sampling
7.1.1 Numbering
The phosphorus slag powder shall be numbered and sampled at the same level before leaving the factory. Each number is a sampling unit. The numbering of phosphorus slag powder is subject to the annual output of single-line production as follows. 60×104t above, no more than 2000t shall be a number;
30×104t ~ 60×104t, no more than 1000t shall be a number;
10×104t ~ 30×104t, no more than 600t shall be a number;
10×104t below, no more than 200t shall be a number.
When the capacity of the bulk transportation tool exceeds the exit-factory numbering tonnages specified by such factory, allow the amount of such number to exceed the exit-factory tonnages specified by such factory.
7.1.2 Sampling method
The sampling shall be performed as per the provisions of GB/T 12573; the sampling shall be representative and continuous; or an equal amount of samples may be taken in more than 20 positions with total quantity of 20kg. The sample shall be mixed evenly; take 5kg of phosphorus slag powder shall be taken out by the quarter method. 7.2 Exit-factory and exit-factory inspection items
7.2.1 The phosphorus slag powder can leave the factory only when it is confirmed that its various technical indicators and package meet the relevant requirements. 7.2.2 The exit-factory inspection items mainly include density, specific surface area, 7d and 28d activity indicators, fluidity ratio, moisture content, sulfur trioxide content, phosphorus pentoxide content, alkali content (if added gypsum, then the exit-factory inspection items also include the ignition loss).
7.3 Type inspection
7.5.2 When the acceptance is based on the test results of the physical sample, the supplier and the purchaser shall jointly take sample sand seal the products before delivery or on the place of delivery. The sample method shall be performed as per the requirements of GB/T 12573; the sampling quantity is 10kg; which is divided into two equal parts. One is kept by the supplier for 40d; the other is inspected as per the items and methods specified in this Standard.
Within 40d, if the purchaser’s inspection considers that the product quality does not meet the requirements of this Standard; while the supplier is doubt about it; then the two parties shall send another sample held by the supplier to the provincial or above- provincial-level building material product quality supervision and inspection agency approved by the state for arbitration test.
7.5.3 When the acceptance is based on the test report of the manufacturer with the same number of phosphorus slag powder, the purchaser (or entrust the supplier) shall take sample from the same number of phosphorus slag powder before or during the delivery; after sealing by the two parties, it shall be stored for 3 months. Within 3 months, if the purchaser is doubt about the quality of the phosphorus slag powder, the supplier and the purchaser shall send the sample jointly sealed by the two parties to the provincial or above-provincial-level building material product quality supervision and inspection agency approved by the state for arbitration test. 8 Package, Marking, Transportation and Storage
8.1 Package
Phosphorus slag powder can be packed in bags or in bulk. The net content per bag is 50kg; shall be no less than 99% of the marking mass; randomly select 20 bags, the total mass of which shall be no less than 1000kg (including the packaging bag); other packaging modes shall be determined by the supplier and the purchaser through negotiation.
The packaging bag of the phosphorus slag powder shall conform to the provisions of GB 9774.
8.2 Marking
The packaging bag shall be clearly marked with the following information such as manufacturer name, product name, product grade, packaging date and number. The phosphorus slag power mixed with gypsum shall be marked with the words “gypsum- added”. When it is packed in bulk, the card with the same contents as the packed in bag shall be provided.
8.3 Transportation and storage
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