1、BSI Standards PublicationBS EN ISO 17892-1:2014Geotechnical investigation andtesting Laboratory testing ofsoilPart 1: Determination of water contentBS EN ISO 17892-1:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 17892-1:2014. It partially supersedes B
2、S 1377-2:1990, specifically subclause 3.2.The UK participation in its preparation was entrusted to TechnicalCommittee B/526/3, Site investigation and ground testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to i
3、nclude all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 81882 0ICS 13.080.20; 93.020Compliance with a British Standard cannot confer immunity fromlegal obligation
4、s.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 December 2014.Amendments/Corrigenda issued since publicationDateT e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17892-1 December 2014 ICS 13.080.20; 93.020 Su
5、persedes CEN ISO/TS 17892-1:2004English Version Geotechnical investigation and testing - Laboratory testing of soil - Part 1: Determination of water content (ISO 17892-1:2014) Reconnaissance et essais gotechniques - Essais de laboratoire sur les sols - Partie 1: Dtermination de la teneur en eau (ISO
6、 17892-1:2014) Geotechnische Erkundung und Untersuchung - Laborversuche an Bodenproben - Teil 1: Bestimmung des Wassergehalts (ISO 17892-1:2014) This European Standard was approved by CEN on 18 October 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate th
7、e conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard
8、 exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the nationa
9、l standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovak
10、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means
11、reserved worldwide for CEN national Members. Ref. No. EN ISO 17892-1:2014 EBS EN ISO 17892-1:2014EN ISO 17892-1:2014 (E) 3 Foreword This document (EN ISO 17892-1:2014) has been prepared by Technical Committee ISO/TC 182 “Geotechnics“ in collaboration Technical Committee CEN/TC 341 “Geotechnical Inve
12、stigation and Testing” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2015, and conflicting national standards shall be withdrawn at the latest by Ju
13、ne 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes CEN ISO/TS 17892-1:2004. According to the CEN-CENELE
14、C Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Icel
15、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17892-1:2014 has been approved by CEN as EN ISO 17892-1:2014 without any modifi
16、cation. BS EN ISO 17892-1:2014ISO 17892-1:2014(E)Contents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Equipment . 15 Test procedure 25.1 Test specimen preparation . 25.2 Test execution 36 Test results 47 Test report . 4Annex A (normative) Calibration,
17、 maintenance and checks . 6Annex B (informative) Explanations . 8Annex C (informative) Fluid content . 9Bibliography .10 ISO 2014 All rights reserved iiiBS EN ISO 17892-1:2014ISO 17892-1:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national sta
18、ndards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International or
19、ganizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for it
20、s further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/direct
21、ivesAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Int
22、roduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to confor
23、mity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword - Supplementary informationISO 17892-1 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 341, Geotech
24、nical investigation and testing, in collaboration with Technical Committee ISO/TC 182, Geotechnics, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).This first edition of ISO 17892-1 cancels and replaces ISO/TS 17892-1:2004, which has been technically
25、revised. It also incorporates the Technical Corrigendum ISO/TS 17892-1:2004/Cor 1:2006.ISO 17892 consists of the following parts, under the general title “Geotechnical investigation and testing Laboratory testing of soil”: Part 1: Determination of water content Part 2: Determination of bulk density
26、Part 3: Determination of particle density Part 4: Determination of particle size distribution Part 5: Incremental loading oedometer test Part 6: Fall cone test Part 7: Unconfined compression test on fine-grained soils Part 8: Unconsolidated undrained triaxial test Part 9: Consolidated triaxial compr
27、ession tests on water-saturated soils Part 10: Direct shear tests Part 11: Determination of permeability by constant and falling head Part 12: Determination of Atterberg limitsiv ISO 2014 All rights reservedBS EN ISO 17892-1:2014ISO 17892-1:2014(E)IntroductionThis document covers areas in the intern
28、ational field of geotechnical engineering never previously standardised internationally. It is intended that this document presents broad good practice throughout the world and significant differences with national documents is not anticipated. It is based on international practice (see Reference 1)
29、. ISO 2014 All rights reserved vBS EN ISO 17892-1:2014BS EN ISO 17892-1:2014Geotechnical investigation and testing Laboratory testing of soil Part 1: Determination of water content1 ScopeThis International Standard specifies a method of determining the water content of soils.This International Stand
30、ard is applicable to the laboratory determination of the water (also known as moisture) content of a soil test specimen by oven-drying within the scope of geotechnical investigations. The water content is required as a guide to the classification of natural soils and as a control criterion in re-com
31、pacted soils, and is measured on samples used for most field and laboratory tests. The oven-drying method is the definitive procedure used in usual laboratory practice.The practical procedure for determining the water content of a soil is to determine the mass loss on drying the test specimen to a c
32、onstant mass in a drying oven controlled at a given temperature. The mass loss is assumed to be due to free water and is referenced to the remaining dry mass of solid particles.NOTE This document fulfils the requirements of the determination of water content of soils for geotechnical investigation a
33、nd testing in accordance with EN 19971 and EN 19972.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edit
34、ion of the referenced document (including any amendments) applies.ISO 386, Liquid-in-glass laboratory thermometers Principles of design, construction and useISO 14688-1, Geotechnical investigation and testing Identification and classification of soil Part 1: Identification and description3 Terms and
35、 definitionsFor the purposes of this document, the following terms and definitions apply.3.1water contentwratio of the mass of free water to the mass of dry soil3.2fluid contentwflratio of the mass of free water including dissolved solids to the mass of dry soil4 EquipmentSee Annex A for calibration
36、 requirements of the following equipment.INTERNATIONAL STANDARD ISO 17892-1:2014(E) ISO 2014 All rights reserved 1BS EN ISO 17892-1:2014ISO 17892-1:2014(E)4.1 Drying oven, of the forced-draft type and capable of maintaining a uniform temperature throughout the drying chamber.Any air circulation shal
37、l not be so strong that any transport of particles can take place.4.2 Thermometer or thermocouple device, accurate to 1C, to check the temperature within the oven.4.3 Balance, accurate to 0,01 g or 0,1 % of the weighed mass whichever value is the greater.4.4 Test specimen containers.4.4.1 Test speci
38、men containers shall be constructed of a material that does not change mass as a result of repeated drying cycles. Glass, porcelain and corrosion-resistant metals have been found to be suitable. One container is needed for each water content determination.4.4.2 Containers shall have a capacity large
39、 enough to hold the mass of sample to be dried without spillage, but should not be so large that the mass of the empty container is significantly in excess of that of the specimen. For larger specimens the container shall also allow the large surface area required of 5.2.1 to be met.For soils with a
40、 tendency to absorb significant amounts of water vapour from air, or if the air humidity is more than about 60 %, containers with close-fitting lids should be used for testing test specimens having a mass of less than about 200 g.NOTE The purpose of close-fitting lids is to prevent loss of moisture
41、from test specimens before initial weighing and to prevent absorption of moisture from the atmosphere before final weighing.4.5 Desiccator, if used, shall be of suitable size and contain dry, self indicating desiccant such as silica gel.It is not required if test specimen containers with close-fitti
42、ng lids are used.NOTE The purpose of the desiccator is to prevent absorption of moisture from air.5 Test procedure5.1 Test specimen preparation5.1.1 If samples are stored prior to testing, they shall be kept in non-corrodible airtight containers at a temperature between approximately 3C and 30C, in
43、an area protected against direct sunlight, local sources of heat and drafts.5.1.2 The water content determination should be performed as soon as practicable.5.1.3 The manner in which the test specimen is selected and its required mass is dependent on the purpose (application) of the test, the type o
44、f soil being tested and the type of sample (e.g. test specimen from another test, bag, tube, split barrel etc). Either a representative sample of the soil as a whole, after thorough mixing, shall be taken or separate portions from each type of soil shall be selected. A description of the test specim
45、en shall be recorded. Details of any test specimen selection shall be reported with the test results.5.1.4 For bulk samples, the test specimen shall be selected from the soil after it has been thoroughly mixed. The recommended minimum masses of moist soil for the determination of water content are l
46、isted in Table 1. If samples of lower mass are tested this should be stated in the test report.2 ISO 2014 All rights reservedBS EN ISO 17892-1:2014ISO 17892-1:2014(E)Table 1 Minimum test specimen massGrain size diameter DmaxammRecommended minimum mass of moist test specimenbg0,063 302,0 10010,0 5003
47、1,5 3 00063,0 21 000a Maximum diameter of soil particles, excluding any discrete coarser particles present.bUsing a test specimen smaller than the minimum mass indicated requires discretion, though it may be adequate for the purpose of the test. A test specimen having a mass less than the indicated
48、value shall be noted in the report of the results. In many cases, when working with a small sample containing a relatively large coarse particle, it is appropriate not to include this particle in the test specimen. If this occurs, it should be noted in the report of the results.5.1.5 For small sampl
49、es, a representative portion shall be selected in accordance with the following procedure:5.1.5.1 For coarse soils, the soil shall be thoroughly mixed and then a test specimen of moist soil having a mass according to Table 1 shall be selected.5.1.5.2 For fine soils, a representative sample shall be sliced in half (to check if the soil is layered) prior to selecting the test specimen. If the soil is layered see 5.1.3. The minimum mass of moist soil selected should not be less than 30 g, or should be in accordance with Table 1 if c
