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GB/T 9966.6-2020: Test methods for natural stone - Part 6: Determination of acid resistance
Status: Valid GB/T 9966.6: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 9966.6-2020 | English | 119 |
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Test methods for natural stone - Part 6: Determination of acid resistance
| Valid |
GB/T 9966.6-2020
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| GB/T 9966.6-2001 | English | 239 |
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Test methods for natural facing stones -- Part 6: Test method for acid resistance
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GB/T 9966.6-2001
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| GB/T 9966.6-1988 | English | 199 |
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Test methods for natural facing stones--Test method for acid resistance
| Obsolete |
GB/T 9966.6-1988
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PDF similar to GB/T 9966.6-2020
Basic data | Standard ID | GB/T 9966.6-2020 (GB/T9966.6-2020) | | Description (Translated English) | Test methods for natural stone - Part 6: Determination of acid resistance | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q21 | | Classification of International Standard | 91.100.15 | | Word Count Estimation | 6,672 | | Date of Issue | 2020-03-06 | | Date of Implementation | 2021-02-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 9966.6-2020: Test methods for natural stone - Part 6: Determination of acid resistance---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.
Test methods for natural stone--Part 6. Determination of acid resistance
ICS 91.100.15
Q21
National Standards of People's Republic of China
Replaces GB/T 9966.6-2001
Test methods for natural stone
Part 6. Acid resistance test
2020-03-06 release
2021-02-01 implementation
State Administration of Market Supervision
Published by the National Standardization Administration
Foreword
GB/T 9966 "Test Methods for Natural Stone" is divided into 18 parts.
--- Part 1. Compression strength test after drying, water saturation and freeze-thaw cycles;
--- Part 2. Bending strength test after drying, water saturation, freeze-thaw cycles;
--- Part 3. Water absorption, bulk density, true density, true porosity test;
--- Part 4. Wear resistance test;
--- Part 5. Hardness test;
--- Part 6. acid resistance test;
--- Part 7. Hanging strength test of stone pendant combination unit;
--- Part 8. Testing the structural strength of stone mounting systems with uniform static pressure difference;
--- Part 9. (by measuring the fundamental frequency of resonance) determine the dynamic elastic modulus;
--- Part 10. Determination of seismic performance of pendant combination units;
--- Part 11. Determination of accelerated aging intensity by chilling and heat;
--- Part 12. Determination of static elastic modulus;
--- Part 13. Determination of capillary water absorption coefficient;
--- Part 14. Determination of resistance to fracture energy;
--- Part 15. Determination of aging resistance to salt spray;
--- Part 16. Determination of the linear thermal expansion coefficient;
--- Part 17. Determination of salt crystal strength;
--- Part 18. Lithofacies analysis.
This part is Part 6 of GB/T 9966.
This section is drafted in accordance with the rules given in GB/T 1.1-2009.
This section replaces GB/T 9966.6-2001 "Test methods for natural facing stone Part 6. Test method for acid resistance". This section
Compared with GB/T 9966.6-2001, in addition to editorial changes, the main technical changes are as follows.
--- Added normative references (see Chapter 2, Chapter 2 of the.2001 edition);
--- Modified the maximum weighing of the balance (see 3.1, 3.1 of the.2001 version);
--- Increased gloss meter requirements (see 3.2);
--- Modify the surface requirements of the sample (see 4.1, 4.1 of the.2001 version);
--- Modified the sample drying temperature and constant weight time (see 3.3, 5.2, 3.2 and 5.1 of the.2001 version);
--- Added schematic diagram of the test device (see 5.6);
--- Added description of the specific state of the appearance of the sample (see 5.7, 5.4 of the.2001 version);
--- Added part of the test report (see Chapter 7, Chapter 7 of the.2001 edition).
This section is proposed by China Building Materials Federation.
This section is under the jurisdiction of the National Stone Standardization Technical Committee (SAC/TC460).
This section was drafted. Sinoma Artificial Crystal Research Institute Co., Ltd., Beijing Sinoma Artificial Crystal Research Institute Co., Ltd., Universal Stone (Fu
Construction) Co., Ltd.
The main drafters of this section. Zhou Junxing, Li Yongqiang, Li Wenhong, Fu Ming, Liu Wuqiang, Huang Yong.
The previous versions of the standards replaced by this section are.
--- GB/T 9966.6-1988, GB/T 9966.6-2001.
Test methods for natural stone
Part 6. Acid resistance test
1 Scope
This part of GB/T 9966 specifies the instruments and equipment, reagents, test samples, test procedures and test results of the natural stone acid resistance test.
Fruit and test report.
This section applies to the test of natural stone resistance to sulfur dioxide gas corrosion.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 13891 Determination of mirror gloss of building finish materials
GB/T 17670 unified number of natural stone
3 Equipment and reagents
3.1 Balance. The maximum weighing is not less than 500g, and the sensitivity is 10mg.
3.2 Gloss meter. the incident angle is 60 °, and the diameter of the light hole is not less than 18mm.
3.3 Drying box. The temperature can be controlled within the range of 65 ℃ ± 5 ℃.
3.4 Reactor. Glass square cylinder with grinding mouth cover with a volume of 0.02m3 and a depth of 250mm; the distance from the upper mouth and the bottom is 20mm ~
There is an air port at 30mm, and a sample holder is installed inside.
3.5 Reagents. sulfuric acid, chemically pure; anhydrous sodium sulfite, chemically pure.
4 Test samples
4.1 The size of the sample is 80mm × 60mm × 20mm, and the dimensional deviation is ± 0.5mm. One of the faces should be the same as the actual application. Four pieces
The sample is a group. The layered sample should indicate the direction of the layering, and the vertical and parallel layered acid-resistant samples should be taken from each group.
4.2 The test specimen shall be free of cracks, nicks and corners.
5 Test steps
5.1 The test specimen shall be cleaned to remove the surface abrasive and debris residue and loose parts.
5.2 Place the sample in a drying box at 65 ℃ ± 5 ℃ for 48h, then put it in a desiccator to cool to room temperature.
5.3 Weigh the sample mass (m0), and measure the specular gloss at the center of each sample when measuring the mirror sample according to GB/T 13891 method.
5.4 Take three of them for acid resistance test, one for comparison.
5.5 Prepare sulfur dioxide according to the following reaction. Pass sulfur dioxide into deionized water to make a sulfurous acid solution.
Na2SO3 H2SO4 → Na2SO4 H2O SO2 ↑
SO2 H2O ← → H2SO3
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