Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 9966 consists of the following 18 parts under the general title Test methods for natural stone:
——Part 1: Dry, wet and after freezing test methods for compressive strength;
——Part 2: Determination of dry, wet and after freezing flexural strength;
——Part 3: Determination of water absorption, bulk density, true density and true porosity;
——Part 4: Determination of abrasion resistance;
——Part 5: Determination of hardness;
——Part 6: Determination of acid resistance;
——Part 7: Determination of strength for individual stone anchorages;
——Part 8: Test method for structural performance of dimension stone cladding systems by uniform static pressure difference;
——Part 9: Determination of the dynamic modulus of elasticity by measuring the fundamental resonance frequency;
——Part 10: Determination of resistance to shaking for individual stone anchoragest;
——Part 11: Determination of resistance to ageing by cold and thermal shock;
——Part 12: Determination of static elastic modulus;
——Part 13: Determination of water absorption coefficient by capillarity;
——Part 14: Determination of rupture energy;
——Part 15: Determination of resistance ageing by salt mist;
——Part 16: Determination of linear thermal expansion coefficient;
——Part 17: Determination of resistance to salt crystallization;
——Part 18: Petrographic examination.
This is Part 3 of GB/T 9966.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 9966.3-2001 Test methods for natural stone—Part 3: Determination of water absorption, bulk density, true density and true porosity. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 9966.3-2001:
——the “Normative references” is added (see Clause 2);
——the terms and definitions for true density and true porosity are added (see Clause 3);
——The oven temperature range is modified (see 4.1; 2.1 of Edition 2001);
——The specification contents of special specimens are added (see 5.1.1);
——The test methods for drying temperature, time and constant weight of specimens are modified (see 6.1.1, 6.2.1; 4.1.1 and 4.2.1 of Edition 2001);
——The test accuracy is modified (see 6.1, 6.2; 4.1 and 4.2 of Edition 2001);
——The operation process of water saturation test is modified (see 6.1.2; 4.1.2 of Edition 2001);
——The operation process of underwater quality measurement is modified, and the measurement contents, illustrations and notes of electronic balance are added (see 6.1.3; 4.1.3 of Edition 2001);
——Some contents of test report are added (see Clause 8; Clause 6 of Edition 2001).
This part was proposed by China Building Materials Federation.
This part is under the jurisdiction of SAC/TC 460 the National Technical Committee on Stone of Standardization Administration of China.
The previous editions of this part are as follows:
——GB/T 9966.3-1988 and GB/T 9966.3-2001.
Test methods for natural stone—
Part 3: Determination of water absorption, bulk density, true density and true porosity
1 Scope
This part of GB/T 9966 specifies the terms and definitions, apparatuses, specimens, test procedures, test results and test reports of the natural stone water absorption, bulk density, true density and true porosity test.
This part is applicable to the determination of water absorption, bulk density, true density and true porosity of natural stone.
2 Normative references
The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 13890 Terms for natural stone
GB/T 17670 Unified catalogue for natural stone
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 13890 and the following apply.
3.1
true density
value reflecting the true density of rock not considering the influence of open pores and closed pores contained in stone
3.2
true porosity
volume percentage of closed pores contained in stone
4 Apparatuses
4.1 Air drying oven: the temperature may be controlled at 65°C± 5°C.
4.2 Balance: with the accuracy of 10mg for the maximum weighing of 1,000g;with the accuracy of 1mg for the maximum weighing of 2,000g.
4.3 Water tank: the bottom surface is flat, with glass rods as specimen support.
4.4 Metal basket: it can meet the requirements of specimens of various specifications and has sufficient rigidity.
4.5 Pycnometer: the volume is 25mL-30mL.
4.6 Standard sieve: 63μm.
4.7 Dryer.
5 Specimens
5.1 Water absorption and bulk density
5.1.1 The specimen is a cube with a side length of 50mm or a cylinder with a diameter and height of 50mm, and the size deviation is ±0.5mm, with five pieces in each group. Other specimens with regular shapes may be selected if any special requirements. The geometric volume of the specimen shall not be less than 60cm3, and the ratio of surface area to volume shall be in the range of 0.08mm-1 - 0.20mm-1.
5.1.2 The specimens shall be taken from representative parts, without cracks and other defects.
5.1.3 The surface of the specimen shall be smooth, and the rough surface shall be polished.
5.2 True density and true porosity
Take about 1,000g of clean sample and crush it into particles less than 5mm; divide by quartering, take a powder sample that has been ground to pass the 63μm of standard sieve, and take 150g as the specimen.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatuses
5 Specimens
6 Test procedures
7 Test results
8 Test report
Bibliography
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
GB/T 9966 consists of the following 18 parts under the general title Test methods for natural stone:
——Part 1: Dry, wet and after freezing test methods for compressive strength;
——Part 2: Determination of dry, wet and after freezing flexural strength;
——Part 3: Determination of water absorption, bulk density, true density and true porosity;
——Part 4: Determination of abrasion resistance;
——Part 5: Determination of hardness;
——Part 6: Determination of acid resistance;
——Part 7: Determination of strength for individual stone anchorages;
——Part 8: Test method for structural performance of dimension stone cladding systems by uniform static pressure difference;
——Part 9: Determination of the dynamic modulus of elasticity by measuring the fundamental resonance frequency;
——Part 10: Determination of resistance to shaking for individual stone anchoragest;
——Part 11: Determination of resistance to ageing by cold and thermal shock;
——Part 12: Determination of static elastic modulus;
——Part 13: Determination of water absorption coefficient by capillarity;
——Part 14: Determination of rupture energy;
——Part 15: Determination of resistance ageing by salt mist;
——Part 16: Determination of linear thermal expansion coefficient;
——Part 17: Determination of resistance to salt crystallization;
——Part 18: Petrographic examination.
This is Part 3 of GB/T 9966.
This part is developed in accordance with the rules given in GB/T 1.1-2009.
This part replaces GB/T 9966.3-2001 Test methods for natural stone—Part 3: Determination of water absorption, bulk density, true density and true porosity. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 9966.3-2001:
——the “Normative references” is added (see Clause 2);
——the terms and definitions for true density and true porosity are added (see Clause 3);
——The oven temperature range is modified (see 4.1; 2.1 of Edition 2001);
——The specification contents of special specimens are added (see 5.1.1);
——The test methods for drying temperature, time and constant weight of specimens are modified (see 6.1.1, 6.2.1; 4.1.1 and 4.2.1 of Edition 2001);
——The test accuracy is modified (see 6.1, 6.2; 4.1 and 4.2 of Edition 2001);
——The operation process of water saturation test is modified (see 6.1.2; 4.1.2 of Edition 2001);
——The operation process of underwater quality measurement is modified, and the measurement contents, illustrations and notes of electronic balance are added (see 6.1.3; 4.1.3 of Edition 2001);
——Some contents of test report are added (see Clause 8; Clause 6 of Edition 2001).
This part was proposed by China Building Materials Federation.
This part is under the jurisdiction of SAC/TC 460 the National Technical Committee on Stone of Standardization Administration of China.
The previous editions of this part are as follows:
——GB/T 9966.3-1988 and GB/T 9966.3-2001.
Test methods for natural stone—
Part 3: Determination of water absorption, bulk density, true density and true porosity
1 Scope
This part of GB/T 9966 specifies the terms and definitions, apparatuses, specimens, test procedures, test results and test reports of the natural stone water absorption, bulk density, true density and true porosity test.
This part is applicable to the determination of water absorption, bulk density, true density and true porosity of natural stone.
2 Normative references
The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 13890 Terms for natural stone
GB/T 17670 Unified catalogue for natural stone
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 13890 and the following apply.
3.1
true density
value reflecting the true density of rock not considering the influence of open pores and closed pores contained in stone
3.2
true porosity
volume percentage of closed pores contained in stone
4 Apparatuses
4.1 Air drying oven: the temperature may be controlled at 65°C± 5°C.
4.2 Balance: with the accuracy of 10mg for the maximum weighing of 1,000g;with the accuracy of 1mg for the maximum weighing of 2,000g.
4.3 Water tank: the bottom surface is flat, with glass rods as specimen support.
4.4 Metal basket: it can meet the requirements of specimens of various specifications and has sufficient rigidity.
4.5 Pycnometer: the volume is 25mL-30mL.
4.6 Standard sieve: 63μm.
4.7 Dryer.
5 Specimens
5.1 Water absorption and bulk density
5.1.1 The specimen is a cube with a side length of 50mm or a cylinder with a diameter and height of 50mm, and the size deviation is ±0.5mm, with five pieces in each group. Other specimens with regular shapes may be selected if any special requirements. The geometric volume of the specimen shall not be less than 60cm3, and the ratio of surface area to volume shall be in the range of 0.08mm-1 - 0.20mm-1.
5.1.2 The specimens shall be taken from representative parts, without cracks and other defects.
5.1.3 The surface of the specimen shall be smooth, and the rough surface shall be polished.
5.2 True density and true porosity
Take about 1,000g of clean sample and crush it into particles less than 5mm; divide by quartering, take a powder sample that has been ground to pass the 63μm of standard sieve, and take 150g as the specimen.
Contents of GB/T 9966.3-2020
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatuses
5 Specimens
6 Test procedures
7 Test results
8 Test report
Bibliography
