GB/T 27845-2011 English PDF

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GB/T 27845-2011: Chemicals -- Test method for particle-size analysis of soils
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 27845-2011	399	Add to Cart	3 days	Chemicals -- Test method for particle-size analysis of soils	Valid

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Basic data

Standard ID: GB/T 27845-2011 (GB/T27845-2011)
Description (Translated English): Chemicals -- Test method for particle-size analysis of soils
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A80
Classification of International Standard: 13.300; 11.100
Word Count Estimation: 17,145
Date of Issue: 2011-12-30
Date of Implementation: 2012-08-01
Quoted Standard: ASTM D421; ASTM E11; ASTM E100
Regulation (derived from): Announcement of Newly Approved National Standards No. 23 of 2011
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: 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 75��m (retained on 200 mesh sieve) particle size distribution was determined by sieving, size of less than 75��m particle size distribution, by settling process using liquid density measurement was determined the necessary data.

GB/T 27845-2011: Chemicals -- Test method for particle-size analysis of soils

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Chemicals. Test method for particle-size analysis of soils ICS 13.300; 11.100 A80 National Standards of People's Republic of China Chemical analysis of soil particle size test methods Issued on. 2011-12-30 2012-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard American Society for Testing and Materials standard ASTM D422-63.2007 "Standard Test Method for Particle Size Analysis of Soil" Same (Standardtestmethodforparticle-sizeanalysisofsoils) (in English) of technical content. This standard includes the following editorial changes. --- Use the "standard" instead of the "test"; --- Delete the original ASTM standard preface, keywords, etc. Part; --- All of the units will be converted into an international system of units; --- Deletion of the original title of charts, tables supplement the title and text of the uniform adjustment of figures, tables, formulas numbers. This standard is managed by the National Standardization Technical Committee chemicals dangerous (SAC/TC251) and focal points. This standard was drafted. Chinese Academy of Inspection and Quarantine, China Chemical Technology Development Center of Jiangsu Coal Chemical Engineering Research Institute Limited, the Chemical Institute of Standardization. The main drafters of this standard. Li Xi, Falls Apart, Wang Xiaobing, Yang Ting, Guo Xinyu. Chemical analysis of soil particle size test methods

1 Scope

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.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Preparation procedure ASTMD421 dry process particle size analysis and soil constants used for the measurement of soil samples (Practicefordryprepara- tionofsoilsamplesforparticle-sizeanalysisanddeterminationofsoilconstants) ASTME11 test sieve and screen specifications (Specificationforwireclothandsievesfortestingpurposes. 2004) ASTME100 American Society for Testing and Materials liquid density specification (SpecificationforASTMhydrometers)

3 Equipment

3.1 Balances By 2.00mm (10 mesh) screen material, using a sensitivity of 0.01g balance to weigh; retained in 2.00mm (10 mesh) Substance use on the screen sensitivity is said to be 0.1% of the sample mass scale to weigh. 3.2 mixing device 3.2.1 A device or devices may be used B. 3.2.2 A device shall contain a stirring device mechanically operated, equipped with a suitable motor driven vertical shaft, in the absence of load can not lower At 10000r/min rotation speed. The vertical shaft should be fitted with metal, plastic or hard rubber replaceable paddle, apparatus A stir Figure 1 mixing paddle. ......

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