BS ISO 2031-2015 Granulated cork Determination of apparent bulk density《粒状软木 表观容积密度的测定》.pdf

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1、BSI Standards PublicationBS ISO 2031:2015Granulated cork Determination of apparentbulk densityBS ISO 2031:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 2031:2015.The UK participation in its preparation was entrusted to Technical Committee PRI/81, Cork.A

2、list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standar

3、ds Limited 2015ISBN 978 0 580 90102 7 ICS 79.100 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2015.Amendments/corrigenda issued since publication

4、Date T e x t a f f e c t e dBS ISO 2031:2015 ISO 2015Granulated cork Determination of apparent bulk densityGranuls de lige Dtermination de la masse volumique apparenteINTERNATIONAL STANDARDISO2031Third edition2015-10-01Reference numberISO 2031:2015(E)BS ISO 2031:2015ISO 2031:2015(E)ii ISO 2015 All r

5、ights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet

6、or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrighti

7、so.orgwww.iso.orgBS ISO 2031:2015ISO 2031:2015(E)Foreword iv1 Scope . 12 Normative references 13 Apparatus . 14 Sampling 25 Procedure. 25.1 Preparation of the sample . 25.2 Test portion 25.3 Determination . 26 Expression of results 37 Test report . 3 ISO 2015 All rights reserved iiiContents PageBS I

8、SO 2031:2015ISO 2031:2015(E)ForewordISO (the International Organization 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

9、 in a subject for which a technical committee has been established has 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 Comm

10、ission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its 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 s

11、hould be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).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

12、identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the con

13、venience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Forewor

14、d - Supplementary informationThe committee responsible for this document is ISO/TC 87, Cork.This third edition cancels and replaces the second edition (ISO 2031:1991) of which it constitutes a minor revision. Minor editorial changes have been made in this edition.iv ISO 2015 All rights reservedBS IS

15、O 2031:2015INTERNATIONAL STANDARD ISO 2031:2015(E)Granulated cork Determination of apparent bulk density1 ScopeThis International Standard specifies a method of determining the apparent bulk density of granulated cork, as defined in ISO 633.2 Normative referencesThe following documents, in whole or

16、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 edition of the referenced document (including any amendments) applies.ISO 633, Cork VocabularyISO 2067, Granulated

17、cork Sampling3 Apparatus3.1 Balance, accurate to 0,5 g.3.2 Oven, capable of maintaining a temperature of (20 2) C and a relative humidity of (65 5) %.3.3 Cubic container with a known accurate mass, capacity 2 dm3(side 126 mm) to be used with granulates having a grain size larger than 4 mm (see Figur

18、e 1).3.4 Cubic container with a known accurate mass, capacity 1 dm3(side 100 mm) to be used with granulates having a grain size equal to or lower than 4 mm (see Figure 1).3.5 Wooden ruler.3.6 Hopper stand, for the hopper with a height such that the upper rim of the hopper is 450 mm away from the sup

19、porting surface (see Figure 1).3.7 Conical hopper, of stainless steel, with: upper and lower diameters of 300 mm and 70 mm respectively, at a distance of 200 mm from each other; the top of the hopper is open and the bottom ends in a cylindrical tube 50 mm high with a removable bottom, which allows a

20、 quick and complete opening of the cylindrical tube, in such a way that the granulated cork falls down into the container, always at the same speed and flow type (see Figure 1). ISO 2015 All rights reserved 1BS ISO 2031:2015ISO 2031:2015(E)Dimensions in millimetresKey1 conical hopper2 removable bott

21、om3 stand for the hopper4 cubic containerFigure 1 Apparatus4 SamplingFollow the instructions given in ISO 2067.5 Procedure5.1 Preparation of the sampleCondition the sample at a temperature of (20 2) C and a relative humidity of (65 5) %, keeping it in the oven (3.2) for 24 h.For process control, rec

22、ord the environmental conditions under which the determinations are carried out. The ambient temperature shall not exceed 30 C.5.2 Test portionImmediately after conditioning the sample, take at random a test portion large enough (see ISO 2067) to fill the cubic container (3.3 or 3.4 depending on the

23、 granularity) three times, allowing for overfill.5.3 DeterminationHang the hopper (3.7) on the stand (3.6). Place the cubic container (3.3 or 3.4) under the base of the hopper and on the supporting surface of the stand.Close the hopper bottom and pour the test portion to fill the hopper.Do not move

24、or shake the container up to the determination of its weight. Do not compress the granules. Open fully the bottom of the hopper (3.7) and allow enough granulated cork to fall until you completely fill the container. Use the ruler (3.5) to level the top.Weigh it on the balance (3.1) taking into accou

25、nt the mass of the cubic container.Perform three tests, each time with the same portion.2 ISO 2015 All rights reservedBS ISO 2031:2015ISO 2031:2015(E)6 Expression of resultsThe apparent bulk density, expressed in kilogrammes per cubic metre, is equal tom2for grain sizes larger than 4 mm (see ISO 206

26、7), orm for grain sizes equal to or lower than 4 mmwhere m is the mass, in grams, rounded to the nearest whole number, of the granulated cork taken from the container (3.3 or 3.4), in each determination.Take as the result the arithmetic mean value of the three determinations.Round the result to the

27、nearest integer.7 Test reportThe test report shall include the following information:a) the complete identification of the sample;b) the test results;c) details of procedures not specified in this International Standard or considered as optional;d) any incidents that may have affected the results. I

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