AS 1379-1997 Specification and supply of concrete

1 AS 1379 1997 Australian Standard Specification and supply of concreteThis is a free 8 page sample. Access the full version Australian Standard was prepared by Committee BD/49, Manufacture ofConcrete. It was approved on behalf of the Council of Standards Australia on22 August 1997 and published on 5 October following interests are represented on Committee BD/49:Ash Development Association of AustraliaAUSTROADSA ustralasian Slag AssociationAustralian Premixed concrete AssociationCement & concrete Association of AustraliaHousing Industry AssociationMaster Builders AustraliaThe Association of Consulting Engineers, AustraliaUniversity of NewcastleReview of Australian keep abreast of progress in industry, Australian Standards aresubject to periodic review and are kept up to date by the issue of amendments or new editions asnecessary.

2 It is important therefore that Standards users ensure that they are in possession of the latestedition, and any amendments details of all Australian Standards and related publications will be found in the Standards AustraliaCatalogue of Publications; this information is supplemented each month by the magazine TheAustralian Standard , which subscribing members receive, and which gives details of new publications,new editions and amendments, and of withdrawn for improvements to Australian Standards, addressed to the head office of StandardsAustralia, are welcomed. Notification of any inaccuracy or ambiguity found in an Australian Standardshould be made without delay in order that the matter may be investigated and appropriate action Standard was issued in draft form for comment as DR is a free 8 page sample.

3 Access the full version 1379 1997 Australian Standard Specification and supply of concreteOriginated as AS (E)A502 edition AS 1379 edition :Amdt 1 2000 PUBLISHED BY STANDARDS AUSTRALIA(STANDARDS ASSOCIATION OF AUSTRALIA)1 THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 0 7337 1468 4 This is a free 8 page sample. Access the full version 1379 19972 PREFACEThis Standard was prepared by the Standards Australia Committee BD/49, Manufacture ofConcrete. It is intended as a revision of, and to supersede, AS 1379 1991,Thespecification and manufacture of its inception in 1941 as AS (E) , the document which in 1973 became AS 1379has undergone many significant changes. The most recent were in 1991 when the secondedition was revised to expand the scope from the 1973 version and to cover plant-mixedand site-mixed concrete in addition to truck-mixed concrete .

4 It also covered theproduction of flexural and indirect-tensile strength grades as well as compressive strengthgrades within and outside the range specified inAS 3600 concrete of the detailed Specification , classification, ingredient materials and quality controlrequirements included in previous editions ofAS 3600were incorporated into AS 1379 in1991 and deleted fromAS 3600in 1994. This was the final step in the process offormulating AS 1379 as an independent material/product logical inclusion of requirements for the use of chemical admixtures and fly ash inthe 1991 edition also allowed for the subsequent withdrawal of the Codes of Practice forthese materials and the development ofAS 3582as an independent suite of Standards forsupplementary growing number of concrete plants are either partially or fully automated withprogrammable controls and digital readouts.

5 In addition to the traditional single-openingtilting mixers, split-drum and continuous mixers are appearing in concrete plants. Both ofthese developments in plant technology were also covered in the 1991 editionObjectiveThe objective of this edition is to (a)update the 1991 edition with new and revised reference Standards;(b)where possible, improve the appropriateness and clarity of requirements in the lightof comments received from users; and(c)align the requirements more closely to the ability of the industry to comply changesThe principal changes from the 1991 edition are the following, in brief:(a)Normal-class concrete (i)introduction of default values for maximum aggregate size and minimum7-day strength; and(ii)changes to cement materials requirements to take account of the revisedStandardAS 3972 Portland and blended cementsandAS 1994 Silica fume.

6 (b)Mixing water a reduction in the number of impurities requiring separate laboratorytesting for their presence.(c)Mixer performance clarification when maintenance and repairs are required andthe introduction of a reduced uniformity test for some of these aspects.(d)Batch production clarification of various aspects including a more detailed Table of tolerances for ingredients other than water and the introduction ofalternatives for controlling water.(e) sampling and testing grouping of plants for the purpose of strength determinationand chemical content (chlorides and sulfates) has now been separated to reflect thedifference in the underlying causes of is a free 8 page sample. Access the full version 1379 1997(f)Assessment for compliance with strength requirements Section 6 has been radicallysimplified for production assessment.

7 It now distinguishes only two gradedesignations, namely controlled grades and associated grades . A single set ofsampling and testing frequencies cover the full range of production rates andeliminates problems previously encountered with small production runs and runsthat were intermittent, irregular, or both. All this has been achieved withoutaffecting the validity of the statistical basis of the assessment. Project assessmenthas likewise been simplified.(g)Special-class concrete Appendix B is a new addition, which sets out somedifferent Specification options for special-class companion document, Supplement 1 Commentary is also being published, whichgives more detailed information and explanations for particular Clauses in the Standard. Itis intended to assist users in gaining a better understanding of the particular requirementsand their application to specific circumstances.

8 CopyrightSTANDARDS AUSTRALIAU sers of Standards are reminded that copyright subsists in all Standards Australia publications and software. Except where theCopyright Act allows and except where provided for below no publications or software produced by Standards Australia may bereproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in writing fromStandards Australia. Permission may be conditional on an appropriate royalty payment. Requests for permission and informationon commercial software royalties should be directed to the head office of Standards Australia will permit up to 10 percent of the technical content pages of a Standard to be copied for useexclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Australia will also permit the inclusion of its copyright material in computer software programs for no royaltypayment provided such programs are used exclusively in-house by the creators of the should be taken to ensure that material used is from the current edition of the Standard and that it is updated whenever theStandard is amended or revised.

9 The number and date of the Standard should therefore be clearly use of material in print form or in computer software programs to be used commercially, with or without payment, or incommercial contracts is subject to the payment of a royalty. This policy may be varied by Standards Australia at any is a free 8 page sample. Access the full version 1379 19974 CONTENTSPageSECTION 1 SCOPE AND REFERENCED OTHER MATERIALS, PLANT OR Specification OF METHODS OF BASIS OF 12 SECTION 2 concrete MATERIALS AND CONSTITUENT CEMENT MIXING CHEMICAL BULK STORAGE OF LIMITATIONS ON CHEMICAL CONTENT OF 14 SECTION 3 PLANT AND BINS AND WEIGHING LIQUID DISPENSING 16 SECTION 4 PRODUCTION AND BATCH CONTINUOUS 22 SECTION 5 sampling AND testing OF AIR CHLORIDE AND SULFATE DRYING 7-DAY STRENGTH OF NORMAL-CLASS OTHER 27 This is a free 8 page sample.

10 Access the full version 1379 1997 PageSECTION 6 sampling , testing AND ASSESSMENT FOR COMPLIANCE OFCONCRETE SPECIFIED BY COMPRESSIVE GENERAL sampling AND PRODUCTION RECORDING AND DISSEMINATION OF PRODUCTIONASSESSMENT PROJECT ASSESSMENT OF STRENGTH ASSESSMENT BY ALTERNATIVE METHODS WITH ANACCEPTED OPERATING 33 APPENDICESAUNIFORMITY OF 34 BGUIDE TO THE Specification OF SPECIAL-CLASS 37 This is a free 8 page sample. Access the full version 1379 19976 STANDARDS AUSTRALIAA ustralian StandardSpecification and supply of concreteSECTION 1 SCOPE AND SCOPEThis Standard sets out the minimum requirements for (a)the materials, plant and equipment used in the supply of concrete ;(b)the production and, if applicable, the delivery of concrete in the plastic state;(c)specifying, sampling , testing and compliance with specified properties of plastic andhardened concrete ; and(d)the uniformity of Standard applies to the supply of all concrete .