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GB/T 9966.18-2021: Test methods for natural stone - Part 18: Petrographic examination
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Test methods for natural stone - Part 18: Petrographic examination
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GB/T 9966.18-2021
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Basic data | Standard ID | GB/T 9966.18-2021 (GB/T9966.18-2021) | | Description (Translated English) | Test methods for natural stone - Part 18: Petrographic examination | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q21 | | Word Count Estimation | 5,553 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 9966.18-2021: Test methods for natural stone - Part 18: Petrographic examination---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 18.Petrographic examination
ICS 91.100.15
Q21
National Standards of People's Republic of China
Natural stone test method
Part 18.Lithofacies analysis
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 18 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, Li Yongqiang, Yang Songlin, Huang Wenjia, Gao Xuewu.
Natural stone test method
Part 18.Lithofacies analysis
1 Scope
This part of GB/T 9966 specifies the principles of natural stone petrographic analysis, instruments and equipment, sample preparation, visual observation and description, microscopic
Observation description, judgment, test report.
This section applies to the petrographic analysis of natural stone.
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 13890 Natural Stone Terminology
GB/T 17670 Unified numbering of natural stone
3 Principle
Through naked eye and microscope observation, determine the mineral composition, structure and structure according to the physical and optical properties of the minerals in the rock, and determine
The petrological properties and facies of stone.
4 Equipment
4.1 Rock slicer.
4.2 Rock grinder.
4.3 Polarizing microscope.
5 Sample preparation
5.1 The sample should be of sufficient size to be able to represent the characteristics of the mineral to be tested, and one or more sample slices should be prepared, and the slices should be pasted on the glass.
The glass slide is polished with 100μm~10μm grade alumina abrasive paste and processed to a thickness of (0.030 0.005) mm.
5.2 Normally, the sample size is 33mm×20mm. If the stone particles are larger, a larger size sample should be used, such as
75mm×50mm, or use multiple samples under normal conditions. If the rock exhibits anisotropic characteristics, use two parallel lines
Clearly mark the direction of the anisotropic surface of the sample (such as bedding, foliation, etc.), and sample preparation should be carried out in each direction.
5.3 The sample should be selected with sufficient strength to avoid chipping during cutting. For samples with lower intensity, use injection refractive index
Samples are made after reinforcement with about 1.54 resin (such as epoxy resin).
6 Visual observation description
The description of visual observation should include the following.
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