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STANDARDSIST EN 13263-1:20051DGRPHãþD
SIST EN 13263-1:2005+A1:2009
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13263-1:2005+A1
March 2009 ICS 91.100.30 Supersedes EN 13263-1:2005English Version
Silica fume for concrete - Part 1: Definitions, requirements and conformity criteria
Fumée de silice pour béton - Partie 1: Définitions, exigences et critères de conformité
Silikastaub für Beton - Teil 1: Definitionen, Anforderungen und Konformitätskriterien This European Standard was approved by CEN on 19 May 2005 and includes Amendment 1 approved by CEN on 8 February 2009.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 and United Kingdom.
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COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13263-1:2005+A1:2009: ESIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 2 Contents Page Foreword .3Introduction .41Scope .52Normative references .53Terms and definitions .54Health, hygiene and environment .95Specifications .95.1General .95.2Chemical requirements . 105.3Physical requirements . 106Packaging, labelling and marking . 117Conformity criteria . 127.1Autocontrol testing . 127.2Conformity criteria for physical and chemical properties and evaluation procedure . 12Annex A (normative)
Release of dangerous substances and emission of radioactivity . 16Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 17Bibliography . 23 SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 3 Foreword This document (EN 13263-1:2005+A1:2009) has been prepared by Technical Committee CEN/TC 104 “Concrete and related products”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. This document includes Amendment 1, approved by CEN on 2009-02-08. This document supersedes EN 13263-1:2005. The start and finish of text introduced or altered by amendment is indicated in the text by tags !"This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. !EN 13263-1:2005+A1:2009 contains a modified requirement for the content of silicon dioxide in a new
class 2." EN 13263 consists of the following parts, under the general title Silica fume for concrete: Part 1: Definitions, requirements and conformity criteria; Part 2: Conformity evaluation. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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 and United Kingdom.
SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 4 Introduction Silica fume consists of mainly spherical particles of amorphous silicon dioxide smaller than 10–6 m and is highly pozzolanic. It is collected by filters as a by-product of the smelting process to produce silicon metal and ferro-silicon alloys. It can be supplied as collected from the filters (undensified), after treatment to increase its bulk density (densified), or as a slurry. Silica fume from more than one furnace, filter or intermediate storage silo will normally be blended in the production plant. Many years of research and practical experience have demonstrated that silica fume which satisfies the requirements in this Part of this European Standard has highly pozzolanic properties, and may be used to produce concrete with improved properties in both the fresh and hardened states. Silica fume is normally used in combination with a plasticizer and/or superplasticizer. SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 5 1 Scope This European Standard applies to the silica fume which is a by-product of the smelting process used to produce silicon metal and ferro-silicon alloys. This part of EN 13263 gives requirements for chemical and physical properties for silica fume to be used as a type II addition in concrete conforming to EN 206-1, or in mortars, grouts and other mixes. This part of EN 13263 also states conformity criteria and related rules. EN 13263 does not give rules for the use of silica fume in concrete. Some rules are given in EN 206-1. NOTE 1 Supplementary rules related to the use of silica fume in concrete may be given in non conflicting national standards for concrete. NOTE 2 EN 206-1 (5.2.5.1 in the 2000 edition) provides conditions for national acceptance of silica fumes coming from calcium silicon alloys production or other silica fumes, not conforming completely to EN 13263, as type II additions for use in concrete. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 196-1, Methods of testing cement — Part 1: Determination of strength EN 196-2, Methods of testing cement — Part 2: Chemical analysis of cement EN 196-6, Methods of testing cement — Part 6: Determination of fineness !EN 196-7:2007", Methods of testing cement — Part 7: Methods of taking and preparing samples of cement EN 197-1, Cement — Part 1: Composition, specifications and conformity criteria for common cements EN 206-1 Concrete — Part 1: Specification, performance, production and conformity !EN 413-2:2005", Masonry cement — Part 2: Test methods EN 451-1, Method of testing fly ash — Part 1: Determination of free calcium oxide content EN 934-2, Admixtures for concrete, mortar and grout — Part 2: Concrete admixtures — Definitions, requirements, conformity, marking and labelling EN 13263-2:2005, Silica fume for concrete — Part 2: Conformity evaluation ISO 9277, Determination of the specific surface area of solids by gas adsorption using the BET method ISO 9286, Abrasive grains and crude — Chemical analysis of silicon carbide 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 6 3.1 activity index measurement of the effect of silica fume on the compressive strength of mortar 3.2 allowable probability of acceptance
CR for a given sampling plan, the allowed probability of acceptance of silica fume with a characteristic value outside the specified characteristic value 3.3 autocontrol continuous statistical quality control of the silica fume based on the testing of samples taken by the manufacturer at point(s) of release from the silica fume production plant 3.4 autocontrol testing continual testing by the manufacturer of silica fume spot samples taken at the point(s) of release from the production plant
3.5 certificate of conformity to EN 13263-1 document issued under the rules of a certain scheme for the evaluation of conformity indicating that adequate confidence is provided that a silica fume is in conformity with this part of EN 13263 3.6 certification procedure by which a third party gives written assurance that a product, process or service conforms to specified requirements [EN 45020:1998] 3.7 certification body impartial body, governmental or non-governmental, possessing the necessary competence and responsibility to carry out conformity certification according to given rules of procedure and management 3.8 certified silica fume silica fume for which a certificate of conformity (see 3.5) has been issued 3.9 characteristic value value having a prescribed probability of not being attained in a hypothetical unlimited test series [ISO 8930:1987] NOTE Equivalent to "fractile" which is defined in ISO 3534-1:1993. 3.10 conformity mark protected mark applied on the basis of the certificate of conformity (see 3.5) 3.11 control period period of production and dispatch identified for the evaluation of the autocontrol test results SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 7 3.12 densified silica fume silica fume that has been treated to increase the bulk density by particle agglomeration, the bulk density typically being above 500 kg/m3 3.13 depot bulk silica fume handling facility – not located at the production plant – used for the dispatch of silica fume – whether in bulk or bagged – after transfer or storage where the manufacturer has full responsibility for all aspects of the quality of the silica fume 3.14 existing production plant production plant which is already producing silica fume under the certification scheme
3.15 factory production control permanent internal control of silica fume production exercised by the manufacturer including internal quality control and autocontrol testing NOTE The required activities are stated in 4.1 to 4.3 in EN 13263-2:2005. 3.16 further testing of samples testing according to 4.4 in EN 13263-2:2005 3.17 initial period immediate period after the first issuing of the certificate of conformity for a silica fume (see 5.6.1 in
EN 13263-2:2005 for duration) 3.18 intitial type testing testing of the first audit sample according to 5.4 in EN 13263-2:2005 3.19 inspection body impartial body having the organization, staffing, competence and integrity to perform according to specified criteria functions such as assessing, recommending for acceptance and subsequent audit of manufacturers´ quality control operations, and selection and evaluation of products on site or in factories or elsewhere, according to specific criteria 3.20 new production plant production plant which is not already producing silica fume under the certification scheme 3.21 production plant facility used by a manufacturer for the production of silica fume: a) silicon metal or silicon alloy production plant; b) processing plant, for example for the selection, slurrifying, blending or densifying of silica fume. 3.22 quality control part of quality management focused on fulfilling quality requirements [EN ISO 9000:2000] SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 8 3.23 sampling plan specific plan which states the (statistical) sample size(s) to be used, the percentage Pk on which the characteristic value is based, and the allowable probability of acceptance CR 3.24 silica fume very fine particles of amorphous silicon dioxide collected as a by-product of the smelting process used to produce silicon metal and ferro-silicon alloys NOTE 1 Silica fume may be processed, for example by classification, selection, blending, densifying, or slurrifying, or by a combination of these processes, in adequate production plants. Such processed silica fume may consist of silica fumes from different sources, each conforming to the definition given in this subclause.
NOTE 2 Other names used for silica fume are condensed silica fume and microsilica. 3.25 silica fume slurry homogeneous, pH regulated liquid suspension of silica fume in water, typically with a dry content of 50 % by mass, corresponding to about 700 kg of silica fume per m³ of slurry 3.26 single result limit value value of a chemical or physical property which for any single test result – in the case of an upper limit is not to be exceeded or in the case of a lower limit is, as a minimum, to be reached 3.27 specified characteristic value characteristic value of a chemical or physical property which in the case of an upper limit is not to be exceeded or in the case of a lower limit is, as a minimum, to be reached NOTE Conformity with the specified characteristic values in this part of EN 13263 is verified by the methods in 7.2. 3.28 spot sample !sample taken within a short period of time and at a fixed point from within a larger quantity, relating to the intended tests. It can be obtained by combining one or more immediately consecutive increments [EN 196-7:2007]" 3.29 test technical operation that consists of the determination of a characteristic of a product according to a specified procedure [Adapted from EN 45020:1998] 3.30 test cement selected brand of Portland cement of type CEM I, strength class 42,5 N or higher, conforming to EN 197-1 to be used for carrying out the tests needed to evaluate conformity to the requirement of 5.3.3 in this part of EN 13263 Test cement is selected by the silica fume manufacturer and is further characterized by its fineness and contents of tricalcium aluminate and alkalis as follows: Fineness:
300 m2/kg to 400 m2/kg when determined in accordance with EN 196-6; Tricalcium aluminate:
8 % to 12 % when determined in accordance with EN 196-2; SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 9 Alkalis (Na2O eqv):
0,6 % to 1,2 % when determined in accordance with EN 196-2. 3.31 testing laboratory laboratory which measures, examines, tests, calibrates or otherwise determines the characteristics or performance of materials or products 3.32 test method specified technical procedure for performing a test [EN 45020:1998] 3.33 type II addition finely divided inorganic, pozzolanic or latent hydraulic material that may be added to concrete in order to improve certain properties or to achieve special properties, see EN 206-1 3.34 undensified silica fume silica fume taken directly from the collection filter, the bulk density typically being in the range 150 kg/m³ to 350 kg/m3 3.35 works´ quality manual document that provides information on the production control which is applied by a manufacturer at a particular production plant to ensure conformity of the silica fume with the requirements of this part of EN 13263 4 Health, hygiene and environment Concerning release of dangerous substances and emission of radioactivity, see Annex A (normative). Materials used in products shall not release any dangerous substances in excess of the maximum permitted levels specified in a relevant European Standard for the material or permitted in the national regulation of the Member State of destination. 5 Specifications 5.1 General The chemical and physical requirements in 5.2 and 5.3 are specified as characteristic values. Conformity to a specified characteristic value is assessed by means of a statistical control procedure as described in clause 7. The test methods prescribed in this part of EN 13263 are reference methods. In factory production control, see EN 13263-2, other methods may be used provided they give results equivalent to those obtained with the reference method. In case of dispute, only the reference method shall be used. The properties in 5.2.1 to 5.3.1 are specified as proportions by mass of dry silica fume. The laboratory samples shall be dried in a ventilated oven at (105 ± 5) °C to constant mass and then cooled in a dry atmosphere. SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 10 5.2 Chemical requirements 5.2.1 Silicon dioxide !The content of silicon dioxide, SiO2, as determined by the method described as reference method in
EN 196-2 shall be not less that 85 % by mass for class 1, or not less than 80 % for class 2 silica fumes. NOTE In the 2005 edition of EN 196-2, the reference method is described in 13.3." 5.2.2 Elemental silicon The content of elemental silicon, Si, determined according to ISO 9286, shall not be greater than 0,4 % by mass. 5.2.3 Free calcium oxide The content of free calcium oxide, free CaO, as determined by the method described in EN 451-1, shall not be greater than 1,0 % by mass. 5.2.4 Sulfate The sulfate content, as determined by the method described in EN 196-2 and expressed as SO3, shall not be greater than 2,0 % by mass. 5.2.5 Total content of alkalis The total content of alkalis determined by the method described in EN 196-2 and calculated as "Na2O equivalent" shall be declared. NOTE Different national provisions adopt different principles but in general only a small proportion of alkalis in silica fume are considered to contribute to alkali silica reaction, see CEN Report 1901. 5.2.6 Chloride The content of chloride, calculated as Cl– and determined in accordance with the method described in EN 196-2, shall not be greater than 0,3 % by mass. If the Cl– content is above 0,10 % by mass, the upper limit for its characteristic value shall be declared by the manufacturer. 5.2.7 Loss on ignition The loss on ignition, as determined in accordance with the method described in EN 196-2, but using an ignition time of 1 hour, shall not be greater than 4,0 % by mass. 5.3 Physical requirements 5.3.1 Specific surface The specific surface, as determined by nitrogen adsorption according to the method given in ISO 9277, shall not be less than 15,0 m2/g, nor more than 35,0 m2/g. SIST EN 13263-1:2005+A1:2009
EN 13263-1:2005+A1:2009 (E) 11
5.3.2 Dry mass content in slurry The dry mass content shall not deviate from the value declared by the supplier by more than ± 2 % by mass of the slurry when determined by drying a representative sample of at least 5 g of slurry in a well ventilated oven at (105 ± 5) °C to constant mass. Constant mass is considered to be reached when successive weighings at least 1 hour apart during drying at (105 ± 5) °C do not differ by more than 0,2 %. 5.3.3 Activity index The activity index is determined as the ratio (in percent) of the compressive strength of standard mortar bars, prepared with 90 % test cement plus 10 % silica fume per mass of total binder, to the compressive strength of standard mortar bars prepared with 100 % test cement, when tested at the same age. Preparation of standard mortar bars and determination of the compressive strength shall be carried out in accordance with the method described in EN 196-1. The mortar containing silica fume shall be mixed with an amount of superplasticizer (conforming to EN 934-2) so that the mortar has a consistency equivalent to the reference mortar when tested by the flow table method given in EN 413-2. The activity inde
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