Cubic Stone

Inspection methods for stone materials

Release time:

2025-09-09

Inspection methods for natural decorative stone materials GB/T 9966.3-2001 Test Methods for Natural Decorative Stone Materials Part 3: Test Methods for Bulk Density, True Density, True Pore Rate, and Water Absorption Rate 1 Scope This standard specifies the equipment and measuring tools, specimens, test procedures, result calculations, and test reports used for the volumetric density, true density, true porosity, and water absorption of natural decorative stone materials. This standard is applicable to the testing of bulk density, true density, true porosity, and water absorption of natural decorative stone materials. 2 Equipment and measuring tools 2.1 Drying oven: The temperature can be controlled within the range of 105 ℃± 2 ℃. 2.2 Balance: maximum weighing 1000g, sensitivity 10mg; maximum weighing 200g, sensitivity 1mg. 2.3 Specific gravity bottle: with a capacity of 25mL to 30mL. 3 samples 3.1 Bulk density and water absorption test sample: The test sample is a cube with a side length of 50mm or a cylinder with a diameter and height of 50mm, with a size deviation of ± 0.5mm. Each group consists of five pieces. The sample is not allowed to have cracks. 3.2 True density and true porosity samples: Take about 1000g of clean sample and crush it into particles smaller than 5mm; Reduce the weight to 150g using the quartering method, and then grind it with a ceramic mortar to a size that can pass through 63? M standard sieve powder. 4 Experimental steps 4.1 Bulk density and water absorption rate 4.1.1 Place the sample in a drying oven at 105 ℃± 2 ℃ and dry it to constant weight. The difference in mass between two consecutive times should be less than 0.02%, and then cool it to room temperature in a dryer. Weigh its mass (m0) to the nearest 0.02g. 4.1.2 Soak the sample in distilled water at 20 ℃± 2 ℃ for 48 hours, then remove it and wipe off the surface moisture of the sample with a wrung out wet towel. Immediately weigh its mass (m1) to the nearest 0.02g. 4.1.3 Immediately place the water saturated sample in a basket and immerse the basket and sample together in distilled water at 20 ℃± 2 ℃. Weigh the sample in water (m2) (note to carefully remove any bubbles attached to the basket and sample during weighing), accurate to 0.02g.

Inspection methods for natural decorative stone materials
GB/T 9966.3-2001 Test Methods for Natural Decorative Stone Materials Part 3: Test Methods for Bulk Density, True Density, True Pore Rate, and Water Absorption Rate
1 Scope
This standard specifies the equipment and measuring tools, specimens, test procedures, result calculations, and test reports used for the volumetric density, true density, true porosity, and water absorption of natural decorative stone materials.
This standard is applicable to the testing of bulk density, true density, true porosity, and water absorption of natural decorative stone materials.
2 Equipment and measuring tools
2.1 Drying oven: The temperature can be controlled within the range of 105 ℃± 2 ℃.
2.2 Balance: maximum weighing 1000g, sensitivity 10mg; maximum weighing 200g, sensitivity 1mg.
2.3 Specific gravity bottle: with a capacity of 25mL to 30mL.
3 samples
3.1 Bulk density and water absorption test sample: The test sample is a cube with a side length of 50mm or a cylinder with a diameter and height of 50mm, with a size deviation of ± 0.5mm. Each group consists of five pieces. The sample is not allowed to have cracks.
3.2 True density and true porosity samples: Take about 1000g of clean sample and crush it into particles smaller than 5mm; Reduce the weight to 150g using the quartering method, and then grind it with a ceramic mortar to a size that can pass through 63? M standard sieve powder.
4 Experimental steps
4.1 Bulk density and water absorption rate
4.1.1 Place the sample in a drying oven at 105 ℃± 2 ℃ and dry it to constant weight. The difference in mass between two consecutive times should be less than 0.02%, and then cool it to room temperature in a dryer. Weigh its mass (m0) to the nearest 0.02g.
4.1.2 Soak the sample in distilled water at 20 ℃± 2 ℃ for 48 hours, then remove it and wipe off the surface moisture of the sample with a wrung out wet towel. Immediately weigh its mass (m1) to the nearest 0.02g.
4.1.3 Immediately place the water saturated sample in a basket and immerse the basket and sample together in distilled water at 20 ℃± 2 ℃. Weigh the sample in water (m2) (note to carefully remove any bubbles attached to the basket and sample during weighing), accurate to 0.02g.