|
SIST EN 1744-1:2010/kprA1:2012
01-september-2012
3UHVNXVLNHPLþQLKODVWQRVWLDJUHJDWRYGHO .HPLMVNDDQDOL]D
Tests for chemical properties of aggregates - Part 1: Chemical analysis
Prüfverfahren für chemische Eigenschaften von Gesteinskörnungen - Teil 1: Chemische
Analyse
Essais visant à déterminer les propriétés chimiques des granulats - Partie 1: Analyse
chimique
Ta slovenski standard je istoveten z: EN 1744-1:2009/FprA1
ICS:
71.040.40 Kemijska analiza Chemical analysis
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
SIST EN 1744-1:2010/kprA1:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 1744-1:2010/kprA1:2012
---------------------- Page: 2 ----------------------
SIST EN 1744-1:2010/kprA1:2012
EUROPEAN STANDARD
FINAL DRAFT
EN 1744-1:2009
NORME EUROPÉENNE
EUROPÄISCHE NORM
FprA1
June 2012
ICS 91.100.15
English Version
Tests for chemical properties of aggregates - Part 1: Chemical
analysis
Essais visant à déterminer les propriétés chimiques des Prüfverfahren für chemische Eigenschaften von
granulats - Partie 1: Analyse chimique Gesteinskörnungen - Teil 1: Chemische Analyse
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 154.
This draft amendment A1, if approved, will modify the European Standard EN 1744-1:2009. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN in three official versions (English, French, German). A version in any other language made
by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has
the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1744-1:2009/FprA1:2012: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 1744-1:2010/kprA1:2012
EN 1744-1:2009/FprA1:2012 (E)
Foreword
This document (EN 1744-1:2009/FprA1:2012) has been prepared by Technical Committee CEN/TC 154
“Aggregates”, the secretariat of which is held by BSI.
This document is currently submitted to the Unique Acceptance Procedure.
2
---------------------- Page: 4 ----------------------
SIST EN 1744-1:2010/kprA1:2012
EN 1744-1:2009/FprA1:2012 (E)
1 Modification to 11.1, Determination of total sulfur content by acid digestion
(Reference method)
Replace the existing text in 11.1 with the following:
"
11.1.1 Principle
An aggregate test specimen is treated with hydrogen peroxide and hydrochloric acid to convert any sulfur
compounds present to sulfates. Any sulfates are precipitated as barium sulfate (BaSO ) and weighed. The
4
sulfur content is expressed as a percentage by mass of the aggregate.
11.1.2 Sampling
The laboratory sample shall be taken in accordance with the procedures specified in EN 932-1.
The laboratory sample should be representative of the moisture content of the batch.
11.1.3 Preparation of test portion
Reduce the laboratory sample by the procedures specified in EN 932-2 to an amount not less than the mass
specified in Table 1 appropriate to the upper (D) sieve size of the aggregate.
If necessary, dry the sample at a temperature of (110 ± 5) °C.
NOTE Drying at a higher temperature will oxidise any sulfides.
Stepwise crush and reduce the sub-sample to a mass of approximately 20 g and then grind the particles until
they all pass the 125 µm sieve. Take approximately 1 g of this material as the test specimen.
11.1.4 Procedure
Weigh the test portion to the nearest 0,1 mg (m ) into a 400 ml high form beaker (5.2.9). Add 20 ml distilled
4
water to elut
...