GB/T 27974-2011 English PDF

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GB/T 27974-2011: Methods for chemical analysis of fly ash and coal gangue as building material
Status: Valid

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Basic data

Standard ID: GB/T 27974-2011 (GB/T27974-2011)
Description (Translated English): Methods for chemical analysis of fly ash and coal gangue as building material
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q11
Classification of International Standard: 91.100.10
Word Count Estimation: 27,267
Date of Issue: 2011-12-30
Date of Implementation: 2012-10-01
Quoted Standard: GB/T 6682; GB/T 12573
Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2011
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the use of fly ash and coal gangue materials chemical analysis. This standard applies to materials with fly ash and coal gangue and other specified materials in this standard.

GB/T 27974-2011: Methods for chemical analysis of fly ash and coal gangue as building material

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for chemical analysis of fly ash and coal gangue as building material ICS 91.100.10 Q11 National Standards of People's Republic of China Coal fly ash for building and chemical analysis methods Issued on. 2011-12-30 2012-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 Basic requirements 3 Test 1 4 Reagents and materials 2 5 instruments and equipment 10 6 Sample preparation 12 7 Determination of moisture drying method --- 12 8 - Determination of loss on ignition ignition subtraction --- 12 9 Determination of silicon dioxide --- potassium fluosilicate volumetric method 13 10 Determination of ferric oxide --- EDTA Direct Titration 14 11 Determination of aluminum oxide of lead salt --- back drops - ammonium fluoride replacement method (Reference method) 14 12 copper sulfate back titration (on behalf of usage) 15 13 Determination of titanium dioxide --- two methane antipyrine spectrophotometric method 16 14 Determination of calcium oxide --- EDTA titration 16 15 Determination of magnesia --- EDTA titration Subtraction 17 16 Determination of a manganese oxide --- effects on oxidation assay 18 17 Determination of sulfur trioxide --- Ai Shika method (Reference method) 19 18 Determination of sulfur trioxide --- coulometric titration (on behalf of usage) 19 19 Determination of potassium oxide and sodium oxide flame photometry --- 20 20 Determination of free calcium oxide glycol method --- 21 21 repeatability limit and reproducibility limit 21

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Building Materials Federation. This standard by the National Standardization Technical Committee cement (SAC/TC184) centralized. This standard is drafted by. China Building Materials Academy, Henan CAS New Materials Co., China Building Materials Inspection Inspection certification center. Participated in the drafting of this standard. Beijing Branch of building automation equipment Limited. The main drafters of this standard. Liu Long, Cui Jian, Liu Sheng, wearing flat, in grams of filial piety, Wang Wenru, Wang Ruihai, Nizhu Jun, Secretary Zhengkai. Coal fly ash for building and chemical analysis methods

1 Scope

This standard specifies the analysis of building materials of fly ash and coal gangue chemical methods. This standard applies to the use of building materials and other materials of fly ash and coal gangue and specified in this standard.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 12573 cement sampling method Basic requirements 3 trials 3.1 the number of tests and requirements Each test frequency is twice, indicating that the measurement result by the average of the two test results. During chemical analysis, unless otherwise stated, loss on ignition must be measured at the same time; the other assays blank test should be carried out simultaneously Experience, and corrected measurement results. It represents 3.2 mass, volume, titer and results Grams (g) represents the mass, accurate to 0.0001g. Burette volume in milliliters (mL) said accurate to 0.05mL. Single titer Indicates milligrams per milliliter (mg/mL). Titer and standard titration solution volume ratio after rounding reserved four significant figures. Unless otherwise indicated, the results of the analysis are mass fraction. Analysis of the results expressed as a percentage to two decimal places after. 3.3 blank test Using the same quantities of reagents, no test, tested in accordance with the same measurement step, the measurement result is corrected. 3.4 Burning The filter paper and the precipitate is fired and the constant has been previously placed in a crucible, in order to avoid generating a flame dried slowly in an oxidizing atmosphere, ashing, Ashing to no black carbon particles, into the high-temperature furnace (5.7), and at a predetermined temperature burning. Cool to room temperature in the desiccator (5.5), the Weighing. 3.5 constant After the first burning, cooling, weighing, by continuous burning for every 15min, then cooled, weighing method to check the constant quality Amount, when the difference is less than two consecutive weighing 0.0005g, which reached constant. 3.6 Check Cl- chlorine ions (silver nitrate test) The precipitate was washed several times as required, the lower end with a few drops of water rinse funnel with a few milliliters of water washed filter paper and precipitate, and the filtrate was collected in a test ......

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