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GB/T 9966.17-2021: Test methods for natural stone - Part 17: Determination of resistance to salt crystallization
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Test methods for natural stone - Part 17: Determination of resistance to salt crystallization
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GB/T 9966.17-2021
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Basic data | Standard ID | GB/T 9966.17-2021 (GB/T9966.17-2021) | | Description (Translated English) | Test methods for natural stone - Part 17: Determination of resistance to salt crystallization | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q21 | | Word Count Estimation | 5,515 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 9966.17-2021: Test methods for natural stone - Part 17: Determination of resistance to salt crystallization
---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 17.Determination of resistance to salt crystallization
ICS 91.100.15
Q21
National Standards of People's Republic of China
Natural stone test method
Part 17.Determination of Salt Crystallization Strength
Released on 2021-04-30
2021-11-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
GB/T 9966 "Natural Stone Test Method" is divided into 18 parts.
---Part 1.Compressive strength test after drying, water saturation, 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.Abrasion resistance test;
---Part 5.Hardness test;
---Part 6.Acid resistance test;
---Part 7.Hanging strength test of stone pendant combination unit;
---Part 8.Test method for testing the structural strength of stone hanging system with uniform static pressure difference;
---Part 9.Determine the dynamic elastic modulus by measuring the fundamental frequency of resonance;
---Part 10.Determination of the seismic performance of pendant assembly units;
---Part 11.Determination of accelerated aging strength by chilling and heating;
---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 resistance to salt spray aging;
---Part 16.Determination of Linear Thermal Expansion Coefficient;
---Part 17.Determination of salt crystal strength;
---Part 18.Lithofacies analysis.
This part is part 17 of GB/T 9966.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by the China Building Materials Federation.
This part is under the jurisdiction of the National Stone Standardization Technical Committee (SAC/TC460).
Drafting organizations of this section. Sinoma IOL Research Institute Co., Ltd., Beijing Sinoma IOL Research Institute Co., Ltd., Nan'an City Quality
Metrology and Testing Institute, Universal Marble (Dongguan) Co., Ltd.
The main drafters of this section. Zhou Junxing, Chen Junying, Lu Liangyong, Zhang Yu, Huang Xukun.
Natural stone test method
Part 17.Determination of Salt Crystallization Strength
1 Scope
This part of GB/T 9966 specifies the principles, equipment, sample preparation, test procedures, and test procedures for determining the crystallization strength of natural stone salt.
Test results and test reports.
This section applies to the determination of the crystallization strength of natural stone salt.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 17670 Unified numbering of natural stone
3 Principle
After being dried to a constant weight, the sample is immersed in a sodium sulfate solution, taken out and dried and then cooled to room temperature. The quality is measured after repeating 15 cycles.
Percentage change in quantity.
4 Equipment
4.1 Blast drying oven. The temperature can be controlled at (105±5)℃.
4.2 Balance. The range should be no less than.200g, and the measurement accuracy should be no less than 0.01g.
4.3 Laboratory or water bath. can keep the temperature of the sample and solution at (20 ± 0.5) ℃.
4.4 14% sodium sulfate decahydrate solution. 86g deionized water is mixed with 14g Na2SO4·10H2O, the solution density is at 20℃
It is 1.055kg/m3.
4.5 Desiccator. a sealed container that can hold at least one set of samples with a built-in desiccant.
5 Sample preparation
5.1 Number of samples
At least 6 representative samples should be made from the same material.
5.2 Specimen specifications
A cube with a side length of (40±1) mm, the surface is a wet cut surface of the diamond circular saw blade, and the irregular surface should be polished smooth.
5.3 Cleaning
All loose materials on the surface of the sample need to be rinsed with clean water.
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