BS ISO 1920-8-2009 Testing of concrete - Determination of the drying shrinkage of concrete for samples prepared in the field or in the laboratory《混凝土测试 现场或在实验室制备的样品混凝土烘干收缩的测定》.pdf
《BS ISO 1920-8-2009 Testing of concrete - Determination of the drying shrinkage of concrete for samples prepared in the field or in the laboratory《混凝土测试 现场或在实验室制备的样品混凝土烘干收缩的测定》.pdf》由会员分享,可在线阅读,更多相关《BS ISO 1920-8-2009 Testing of concrete - Determination of the drying shrinkage of concrete for samples prepared in the field or in the laboratory《混凝土测试 现场或在实验室制备的样品混凝土烘干收缩的测定》.pdf(26页珍藏版)》请在麦多课文档分享上搜索。
1、BS ISO1920-8:2009ICS 91.100.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDTesting of concretePart 8: Determination of dryingshrinkage of concrete for samplesprepared in the field or in thelaboratoryThis British Standardwas published underthe authority of the
2、Standards Policy andStrategy Committee on 30November 2009 BSI 2009ISBN 978 0 580 59476 2Amendments/corrigenda issued since publicationDate CommentsBS ISO 1920-8:2009National forewordThis British Standard is the UK implementation of ISO 1920-8:2009.The UK participation in its preparation was entruste
3、d to TechnicalCommittee B/517/1, Concrete production and testing.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.
4、Compliance with a British Standard cannot confer immunityfrom legal obligations.BS ISO 1920-8:2009Reference numberISO 1920-8:2009(E)ISO 2009INTERNATIONAL STANDARD ISO1920-8First edition2009-04-01Testing of concrete Part 8: Determination of drying shrinkage of concrete for samples prepared in the fie
5、ld or in the laboratory Essais du bton Partie 8: Dtermination du retrait de schage du bton dchantillons prpars sur le terrain ou en laboratoire BS ISO 1920-8:2009ISO 1920-8:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may
6、be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accept
7、s no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the
8、file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of this publication may be rep
9、roduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22
10、 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedBS ISO 1920-8:2009ISO 1920-8:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principl
11、e. 2 5 Apparatus 2 6 Test samples and specimens 7 6.1 Sampling 7 6.2 Test specimens . 8 7 Procedure 8 7.1 Measurement of consistence and temperature of concrete. 8 7.2 Preparation and filling of the moulds . 8 7.3 Compacting of concrete. 8 7.4 Curing of specimens 9 7.5 Drying and measurement of spec
12、imens. 10 8 Calculation and expression of results 12 9 Test report . 12 10 Precision for laboratory-prepared specimens. 14 Annex A (informative) A suitable horizontal length comparator. 15 BS ISO 1920-8:2009ISO 1920-8:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organizatio
13、n for Standardization) is a worldwide federation of national standards 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
14、 the right to be represented on that committee. International organizations, 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. Inter
15、national Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publicat
16、ion as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention 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 righ
17、ts. ISO 1920-8 was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and pre-stressed concrete, Subcommittee SC 1, Test methods for concrete. ISO 1920 consists of the following parts, under the general title Testing of concrete: Part 1: Sampling of fresh concrete Part 2: Prope
18、rties of fresh concrete Part 3: Making and curing test specimens Part 4: Strength of hardened concrete Part 5: Properties of hardened concrete other than strength Part 6: Sampling, preparing and testing of concrete cores Part 7: Non-destructive tests on hardened concrete Part 8: Determination of dry
19、ing shrinkage of concrete for samples prepared in the field or in the laboratory Part 9: Determination of creep of concrete cylinders in compression The following part is under preparation: Part 10: Determination of static modulus of elasticity in compression BS ISO 1920-8:2009INTERNATIONAL STANDARD
20、 ISO 1920-8:2009(E) ISO 2009 All rights reserved 1Testing of concrete Part 8: Determination of drying shrinkage of concrete for samples prepared in the field or in the laboratory 1 Scope This part of ISO 1920 specifies a method for determining the length changes of concrete specimens due to drying i
21、n air, and the method of preparing and curing the concrete specimens to be tested. It is applicable for the testing of specimens prepared in the laboratory or in the field, in which the maximum nominal size of aggregate in the concrete, in accordance with ISO 6274, does not exceed 25 mm. The precisi
22、on statement in Clause 10 does not apply to specimens that have had non-standard initial curing (normally field-prepared specimens). In addition, this part of ISO 1920 requires that field-prepared specimens be marked, recorded and reported as such. NOTE 1 This test method is not always suitable for
23、very low slump concrete (less than 20 mm), primarily due to the difficulties in obtaining adequate compaction. Provided adequate compaction is obtained, the method is applicable. NOTE 2 The method is specifically developed for measurement of drying shrinkage of concrete, but it is capable of adaptat
24、ion for measurement of length changes of specimens subjected to a variety of environmental conditions. 2 Normative references The following referenced documents are essential for the application of this part of ISO 1920. For dated references, only the edition cited applies. For undated references, t
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