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GB/T 27845-2011Chemicals -- Test method for particle-size analysis of soils (English PDF)

化学品土壤粒度分析试验方法

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Issued by

Standardization Administration of China

Level / Type

National · Recommended

Issue date

December 30, 2011

Implementation date

August 1, 2012

Scope

GB/T 27845-2011 is the English-translated version of 化学品土壤粒度分析试验方法.

GB/T 27845-2011 — This standard specifies quantitative test methods of soil particle size distribution. This standard is applicable to the quantitative determination of soil particle size analysis.

Particle size greater than 75µm (retained on a 200 mesh) particle size distribution, by Sieving determined; particle size of less than 75µm distribution, adopt the necessary data sedimentation process using liquid density measurement was determined.

Note 1. You can use 4.75mm (4 mesh), 425µm (40 mesh) or 75µm (200 mesh) screen, instead of 2.00mm (10 mesh) sieve for separation. No matter what Species sieve, the pore size of the report are described.

Note 2. The dispersion devices, there are two. one is the high-speed mechanical stirrer, and the other is an air dispersion devices. A large number of surveys show that the soil particle size less than 20µm Plastic soil, air dispersion dispersing device better for sandy soil, air dispersion devices may slightly reduce its degradation.

Using air dispersion Apparatus has obvious advantages, it is recommended. The results obtained using the apparatus of the two very different, which is due to the different types of soil, resulting in grain size Distribution with a significant difference, especially when the soil particle size less than 20µm.

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Document preview — GB/T 27845-2011

National Standard of the People's Republic of China

ICS: 13.300; 11.100
Classification: A 80

Issued by: Standardization Administration of China

What this standard covers1
Document data2
Standards quoted by this document3

What this standard covers

This standard specifies the soil particle size distribution of the quantitative test methods. This standard applies to the quantitative determination of soil particle size analysis. Particles larger than 75µm (retained on 200 mesh sieve) particle size distribution was determined by sieving, size of less than 75µm particle size distribution, by settling process using liquid density measurement was determined the necessary data.

Document data

International classification (ICS): 13.300; 11.100.

Chinese classification (CCS): A80.

Estimated length of the Chinese original: 17,189 words.

Standards quoted by this document

ASTM D421; ASTM E11; ASTM E100

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 11 pages — is available in the English PDF.

Referenced standards

Cited by

LY/T 2901-2017Technical specification for long-term observation of lake wetland ecosystem

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