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1、1 AS 1289.3.3.22009Australian StandardMethods of testing soils for engineering purposesMethod 3.3.2: Soil classification tests Calculation of the cone plasticity index of a soil1 SCOPEThis Standard sets out a method to calculate the plasticity index of a soil as derived from the cone liquid limit an
2、d the plastic limit of a soil.2 REFERENCED DOCUMENTSThe following documents are referred to in this Standard: AS1289Methods of testing soils for engineering purposes1289.3.2.1 Method 3.2.1: Soil classification testsDetermination of the plastic limit of a soilStandard method1289.3.9.1 Method 3.9.1: S
3、oil classification testsDetermination of the cone liquid limit of a soil1289.3.9.2 Method 3.9.2: Soil classification testsDetermination of the cone liquid limitOne-point method3 PROCEDUREThe procedure shall be as follows:(a) Determine cone liquid limit in accordance with AS 1289.3.9.1 or AS 1289.3.9
4、.2. If the cone liquid limit cannot be determined the soil is considered to be non-plastic and the plastic limit need not be determined.(b)If a cone liquid limit value has been determined, perform the plastic limit in accordance with AS 1289.3.2.1 ensuring that the same method of preparation of the
5、soil for the cone liquid limit and plastic limit has been followed.NS4 CALCULATIO Using the reported values of wCL and wP, calculate the cone plasticity index (ICP) from thefollowing equation: Standards AustraliawhereICP = wCLwPAS 1289.3.3.22009ICP = cone plasticity index, in percentwCL = cone liqui
6、d limit, in percentwP = plastic limit, in percentAS 1289.3.3.22009 25 TEST REPORTThe following shall be reported:(a) The cone plasticity index (ICP), in percent, when both the liquid limit and the plastic limit are determined.(b) When the cone liquid limit or the plastic limit cannot be determined,
7、report the plasticity index as NP (i.e., non-plastic) together with the cone liquid limit or plastic limit, if either has been determined.(c) When the plastic limit is equal to or greater than the cone liquid limit, report the cone plasticity index as 0 (zero) and also report both the cone liquid li
8、mit and the plastic limit.(d)Method of preparation and the history of the sample. (e)Reference to this method, i.e., AS 1289.3.3.2. Standards Australiawww.standards.org.au3 AS 1289.3.3.22009NOTESAS 1289.3.3.22009 4This Australian Standard was prepared by Committee CE-009, Testing of Soils for Engine
9、ering Purposes. It was approved on behalf of theCouncil of Standards Australia on 9 December 2008 and published on 6 February 2009.The following are represented on Committee CE-009: AUSTROADSAssociation of Geotechnical Testing Authorities (Qld)Australian Building Codes BoardAustralian Chamber of Com
10、merce and IndustryAustralian Geomechanics SocietyAustralian Stabilisation Industry AssociationCement Concrete and Aggregates AustraliaDepartment of Planning and Infrastructure (NT)Engineering and Construction Laboratories AssociationEngineers AustraliaNational Association of Testing Authorities Aust
11、raliaUniversity of MelbourneUniversity of SydneyVictorian Construction Materials Laboratories AssociationKeeping Standards up-to-dateStandards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new
12、editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased.Detailed informati
13、on about Standards can be found by visiting the Standards Web Shop at .au and looking up the relevant Standard in the on-line catalogue.We also welcome suggestions for the improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguit
14、ies. Contact us via email at mailstandards.org.au, or write to the Chief Executive, Standards Australia Limited, GPO Box 476, Sydney, NSW 2001.Originated as AS 1289.3.3.21995. Second edition 2009.This Standard was issued in draft form for comment as DR 06694.COPYRIGHT Standards AustraliaAll rights a
15、re reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher.Published by Standards Australia LimitedGPO Box 476, Sydney, NSW 2001, AustraliaISBN 0 7337 9007 0 Printed in AustraliaThis page has been left intentionally blank.
