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GB/T 9966.4-2020: Test methods for natural stone - Part 4: Determination of abrasion resistance
Status: Valid GB/T 9966.4: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 9966.4-2020 | English | 189 |
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Test methods for natural stone - Part 4: Determination of abrasion resistance
| Valid |
GB/T 9966.4-2020
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| GB/T 9966.4-2001 | English | 239 |
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Test methods for natural facing stones -- Part 4: Test method for abrasion resistance
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GB/T 9966.4-2001
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| GB/T 9966.4-1988 | English | 199 |
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Test methods for natural facing stones--Test method for abrasion resistance
| Obsolete |
GB/T 9966.4-1988
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PDF similar to GB/T 9966.4-2020
Basic data | Standard ID | GB/T 9966.4-2020 (GB/T9966.4-2020) | | Description (Translated English) | Test methods for natural stone - Part 4: Determination of abrasion resistance | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q21 | | Classification of International Standard | 91.100.15 | | Word Count Estimation | 10,175 | | 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 9966.4-2020: Test methods for natural stone - Part 4: Determination of abrasion 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 4. Determination of abrasion resistance
ICS 91.100.15
Q21
National Standards of People's Republic of China
Replaces GB/T 9966.4-2001
Test methods for natural stone
Part 4. Abrasion 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 the fourth part 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 9966.4-2001 "Test methods for natural facing stone-Part 4. Abrasion resistance test method" This section
Compared with GB/T 9966.4-2001, in addition to editorial changes, the main technical changes are as follows.
--- Increased the scope of application of the grinding wheel grinding method (see Chapter 1, Chapter 1 of the.2001 edition);
--- Added and adjusted normative references (see Chapter 2);
--- Added the principle and schematic diagram of the wear-resistant machine test equipment (see 3.1.1, 3.1 of the.2001 version);
--- Modified the technical parameters of the abrasive disc size, test weight, speed and abrasive flow rate (see 3.1.1,.2001 version)
3.1 and 5.2);
--- Improved the accuracy requirements of the balance (see 3.1.2, 3.3 of the.2001 version);
--- Modify the sample size (see 3.2, 4.1 of the.2001 version);
--- Modified the sample drying temperature and constant weight time (see 3.3.1, 5.1 of the.2001 version);
--- Modified the abrasive type and wear revolutions (see 3.3.2, 3.2 and 5.2 of the.2001 version);
--- Increased the test method for bulk density (see 3.3.3);
--- Modified the calculation formula (see Chapter 6, Chapter 6 of the.2001 edition);
--- Added the content of grinding wheel grinding test method (see Chapter 4);
--- Added part of the test report (see Chapter 5, 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, Zhong Wenbo, Gong Yue, Liu Wuqiang, Wu Dawei.
The previous versions of the standards replaced by this section are.
--- GB/T 9966.4-1988, GB/T 9966.4-2001.
Test methods for natural stone
Part 4. Abrasion resistance test
1 Scope
This part of GB/T 9966 specifies the equipment, test samples, test procedures, test results and tests for the abrasion resistance of natural stone.
Inspection report.
This section applies to the determination of abrasion resistance of natural stone. The abrasive disc abrasion method (Method A) is suitable for testing materials, such as blocks, squares
Pavement stones, etc .; The grinding wheel grinding method (Method B) is suitable for product testing, such as composite boards, marble boards with crystallized surfaces.
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 2479 ordinary abrasive white alumina
GB/T 9966.3 Test methods for natural stone. Part 3. Tests for water absorption, bulk density, true density, true porosity
GB/T 17670 unified number of natural stone
3 Abrasive disc wear method (Method A)
3.1 Equipment
3.1.1 Abrasion tester
The abrasive disc type abrasion tester is shown in Figure 1.It mainly consists of a specimen holder capable of rotating, a steel abrasive disc capable of rotating, and abrasive.
The application device and other supporting components. The sample entrainment drives the sample to rotate, and the wear of the sample occurs between the abrasive and the rotating disc.
The abrasion resistance of the samples was evaluated.
Steel grinding disc hardness 203HB ~ 245HB, diameter 254mm ± 1mm, rotation speed 45r/min ± 1r/min; four sample clamps are uniform
It is distributed on a circle with a diameter of 180mm which is concentric with the grinding disc.The self-rotation speed of the sample holder is 45r/min ± 1r/min; the sample holder, vertical axis, screw
The total weight of the rotating gear and the load adjustment device is.2000g and is added to the sample; during the test, the abrasive application device is 60g/min ~
Add abrasive at a constant speed of 70g/min; the vertical axis can move up and down freely in the vertical direction.
3.1.2 Balance
The measuring range is 1000g, and the accuracy is 0.01g.
3.1.3 Blast Dryer
The temperature can be controlled within the range of 65 ℃ ± 5 ℃.
3.2 Test samples
3.2.1 Select a representative stone sample, the test surface should be mirror or fine surface.
3.2.2 The length and width of the samples are 50mm ± 0.5mm, the thickness is 15mm ~ 50mm, there are 4 samples in each group, and 4 on the test surface.
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