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GB/T 9966.2-2020: Test methods for natural stone - Part 2: Determination of dry, wet and after freezing flexural strength
Status: Valid GB/T 9966.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 9966.2-2020 | English | 189 |
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Test methods for natural stone - Part 2: Determination of dry, wet and after freezing flexural strength
| Valid |
GB/T 9966.2-2020
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| GB/T 9966.2-2001 | English | 239 |
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Test methods for natural facing stones -- Part 2: Dry and wet test method for flexural strength
| Obsolete |
GB/T 9966.2-2001
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| GB/T 9966.2-1988 | English | 199 |
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Test methods for natural facing stones--Test method for flexural strength
| Obsolete |
GB/T 9966.2-1988
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PDF similar to GB/T 9966.2-2020
Basic data | Standard ID | GB/T 9966.2-2020 (GB/T9966.2-2020) | | Description (Translated English) | Test methods for natural stone - Part 2: Determination of dry, wet and after freezing flexural strength | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q21 | | Classification of International Standard | 91.100.15 | | Word Count Estimation | 10,131 | | 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 9966.2-2020: Test methods for natural stone - Part 2: Determination of dry, wet and after freezing flexural strength
---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 2. Determination of dry, wet and after freezing flexural strength
ICS 91.100.15
Q21
National Standards of People's Republic of China
Replaces GB/T 9966.2-2001
Test methods for natural stone
Part 2. After drying, water saturation, freeze-thaw cycles
Flexural strength 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 second 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 9966.2-2001 "Test methods for natural facing stone. Part 2. Dry, water saturated flexural strength test
method". Compared with GB/T 9966.2-2001, the main technical changes in this part are as follows.
--- Increased concentrated load bending strength test method and scope of application (see Chapter 1, Chapter 1 of the.2001 edition);
--- Added normative references (see Chapter 2);
--- Modify and increase the size of the corresponding sample (see 4.1, 4.6,.2001, 3.1, 3.6);
--- Increased layered mark icon (see 4.4, 3.3 of.2001 version);
--- Modified the sample drying temperature and constant weight time (see 5.1.1, 4.1.1 of the.2001 version);
--- Modified loading rate (see 5.1.3,.2001 version 4.1.3);
--- Modified the water saturation test method steps (see 5.2.1, 4.2.1 of.2001 version);
--- Increased flexural strength test method after freeze-thaw cycles (see 5.3);
--- Increased the calculation of the results of concentrated load bending strength (method B) (see Chapter 6.2, Chapter 5 of the.2001 edition);
--- Added part of the test report (see Chapter 7, Chapter 6 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, Yu Quan, Chen Junying, Dong Zhihao, Liu Wuqiang, Zheng Jiuqin.
The previous versions of the standards replaced by this section are.
--- GB/T 9966.2-1988, GB/T 9966.2-2001.
Test methods for natural stone
Part 2. After drying, water saturation, freeze-thaw cycles
Flexural strength test
1 Scope
This part of GB/T 9966 specifies the equipment, test specimens, test procedures, results calculations and results used in the bending strength test of natural stone.
experiment report.
This section applies to the determination of flexural strength of natural stone after drying, water saturation, and freeze-thaw cycles. Fixed moment bending strength --- Method A
Applicable to fixed moment bending strength of stone for building curtain wall and interior wall floor; bending load under concentrated load --- Method B is suitable for outdoor use
Bending strength of stone for square and pavement under concentrated load.
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 17670 unified number of natural stone
3 Equipment
3.1 Testing machine. Equipped with corresponding sample holders, as shown in Figure 1 and Figure 2.The relative error of the displayed value does not exceed ± 1%.
Within the range of 20% ~ 90% of the indicated value.
In millimeters
Explanation.
F --- load;
H --- sample thickness;
L --- The distance between the two lower support shafts.
Figure 1 Schematic diagram of flexural strength (method A) at a fixed moment
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