SANS 5834-2006 Soluble deleterious impurities in fine aggregates (limit test)《在细骨料中的可溶性有害杂质(限量测试)》.pdf
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1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 0-626-17615-8 SANS 5834:2006Edition 2.1Any reference to SABS SM 834 is deemedto be a reference to this standard(Government Notice No. 1373 of 8 Nove
4、mber 2002)SOUTH AFRICAN NATIONAL STANDARD Soluble deleterious impurities in fine aggregates (limit test) Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Afr
5、ica SANS 5834:2006 Edition 2.1 Table of changes Change No. Date Scope Amdt 1 2006 Amended to update referenced standards and to change the designation of SABS standards to SANS standards. Foreword This South African standard was approved by National Committee StanSA SC 5120.61A, Construction standar
6、ds Cement, lime and concrete, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. A vertical line in the margin shows where the text has been technically modified by amendment No. 1. This edition cancels and replaces the first revision (SABS
7、SM 834:1994). SANS 5834:2006 Edition 2.1 1 Soluble deleterious impurities in fine aggregates (limit test) 1 Scope and field of application This standard specifies a method for measuring the effect of soluble deleterious materials in fine aggregates by comparing the compressive strength of mortar cub
8、es made from the fine aggregate in its natural state with the compressive strength of mortar cubes made from a washed sample of the same fine aggregate. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this specificatio
9、n. All documents are subject to revision and, since any reference to a document is deemed to be a reference to the latest edition of that document, parties to agreements based on this specification are encouraged to take steps to ensure the use of the most recent editions of the documents listed bel
10、ow. Information on currently valid national and international standards can be obtained from the appropriate standards organization. SABS 471, Port cement (ordinary, rapid-hardening and sulphate-resisting). Amdt 1 SANS 197, Preparation of test samples of aggregates. SANS 5863, Concrete tests Compres
11、sive strength of hardened concrete SABS SM 866, Compressive and flexural strength of cement (mortar prism method). Amdt 1 SANS 50196-1/EN 196-1, Methods of testing cement Part 1: Determination of strength. Amdt 1 SANS 50197-1/EN 197-1, Cement Part 1: Composition, specifications and conformity criter
12、ia for common cements. Amdt 1 3 Material Portland cement, that complies with the requirements of SANS 50197-1 for ordinary Portland cement. Amdt 1 4 Apparatus 4.1 Two suitable gauging trowels, of length approximately 200 mm. 4.2 Moulds, equipped with base plates and suitable cover plates, and constr
13、ucted of a metal that is resistant to attack by cement mortar. The moulds are so rigidly constructed as to facilitate the SANS 5834:2006 Edition 2.1 2 removal of a moulded test specimen without damage, and so machined that, when cubical moulds are assembled and ready for use, their dimensions and in
14、terior faces are as follows: a) nominal height of mould and nominal distances between opposite faces : 50 mm to 100 mm; b) height of mould and distances between opposite faces equal to within : 0,15 mm; c) angle between adjacent interior faces and planes of top and bottom surfaces : 90 0,5; and d) i
15、nterior faces and base plate plane to within : 0,03 mm per 100 mm. Alternatively, prism moulds with dimensions as given in SANS 50196-1 may be used. Amdt 1 The base plates of moulds are of such size that the moulds are adequately supported and leakage will not occur during filling and compaction. 4.
16、3 Curing cabinet (or curing room), maintained at a temperature of 22 C to 25 C and at a relative humidity of at least 90 %. 4.4 Steam cabinet, that is of such dimensions that it will hold at least six moulds simultaneously. It is equipped with means to supply (continuously for 24 h) steam at a tempe
17、rature of 80 C to 85 C and at normal atmospheric pressure. The cabinet is so insulated and provided with a steam outlet as to ensure that the temperature of the steam in the cabinet does not vary by more than 1 C, and that the steam pressure does not exceed atmospheric pressure. 4.5 Curing bath, of
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