1、BSI Standards PublicationBS EN 480-13:2015Admixtures for concrete,mortar and grout TestmethodsPart 13: Reference masonry mortar fortesting mortar admixturesBS EN 480-13:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 480-13:2015. Itsupersedes BS EN 480-13:2
2、009+A1:2011 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/517/3, Admixtures.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of
3、a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 87584 7ICS 91.100.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the
4、 authority of theStandards Policy and Strategy Committee on 30 June 2015.Amendments issued since publicationDate Text affectedBS EN 480-13:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 480-13 June 2015 ICS 91.100.10 Supersedes EN 480-13:2009+A1:2011English Version Admixtures for concrete,
5、 mortar and grout - Test methods - Part 13: Reference masonry mortar for testing mortar admixtures Adjuvants pour bton, mortier et coulis - Mthodes dessai -Partie 13: Mortier maonner de rfrence pour les essais mens sur les adjuvants de mortier Zusatzmittel fr Beton, Mrtel und Einpressmrtel - Prfverf
6、ahren - Teil 13: Referenz-Baumrtel fr die Prfung von Zusatzmitteln fr Mauerwerksmrtel This European Standard was approved by CEN on 10 April 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
7、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-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German).
8、 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, Cy
9、prus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United K
10、ingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 480-
11、13:2015 EBS EN 480-13:2015EN 480-13:2015 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Constituent materials 4 3.1 Cement 4 3.2 Sand 4 3.3 Mixing water .5 4 Reference masonry mortar .5 5 Production of reference mortar with standard consistence .5 5.1 Mix proportions 5 5.2 Mixin
12、g procedure .6 5.3 Mortar for test after standing 6 5.4 Mortar for test after extended mixing 6 6 Calculation of water reduction (air entraining/plasticizing admixtures) 6 7 Test report 7 BS EN 480-13:2015EN 480-13:2015 (E) 3 Foreword This document (EN 480-13:2015) has been prepared by Technical Com
13、mittee 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 December 2015, and conflicting national standards shall
14、be withdrawn at the latest by December 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 480-13:2009+A
15、1:2011. This standard differs from EN 480-13:2009+A1:2011 as follows: a) Subclause 3.1 has been updated with regard to requirements for the specific surface of cement used. b) It has been revised editorially. According to the CEN/CENELEC Internal Regulations, the national standards organisations of
16、the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
17、rlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 480-13:2015EN 480-13:2015 (E) 4 1 Scope This European Standard specifies the constituent materials, the composition and the mixing procedure to produce a reference masonry
18、mortar with a prescribed consistence for testing mortar admixtures as defined in EN 934-3. It also describes the determination of the water reduction of the test mix compared to the control mix. 2 Normative references The following documents, in whole or in part, are normatively referenced in this d
19、ocument and are indispensable for its application. 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, Method
20、of testing cement - Part 2: Chemical analysis of cement EN 196-6, Methods of testing cement - Part 6: Determination of fineness EN 197-1, Cement - Part 1: Composition, specifications and conformity criteria for common cements EN 934-3, Admixtures for concrete, mortar and grout Part 3: Admixtures for
21、 masonry mortar Definitions, requirements, conformity, marking and labelling EN 1008, Mixing water for concrete - Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete EN 1015-4, Met
22、hods of test for mortar for masonry - Part 4: Determination of consistence of fresh mortar (by plunger penetration) EN 1015-7, Methods of test for mortar for masonry - Part 7: Determination of air content of fresh mortar 3 Constituent materials 3.1 Cement The reference masonry mortar shall be made w
23、ith CEM I cement of strength class 42,5 or 52,5, conforming to EN 197-1. The cement used shall have a C3A content of 7 % to 11 % by mass calculated from chemical analysis according to EN 196-2 and a specific surface of (3 200 to 4 600) cm2/g determined according to EN 196-6. 3.2 Sand A natural sand
24、of normal density (relative density 2,5 2,8) shall be used. The size fractions of the sand shall comply with Table 1. The sand shall be used in an oven dry condition. BS EN 480-13:2015EN 480-13:2015 (E) 5 Table 1 Sand for reference masonry mortar Aperture size (mm) Percentage by mass passing the tes
25、t sieve 4,0 100 2,0 90 100 1,0 60 90 0,5 40 75 0,25 25 50 0,125 10 30 0,063 0 10 3.3 Mixing water Water according to EN 1008 shall be used as mixing water.1)4 Reference masonry mortar Where specified, tests on reference mortar are performed as comparative tests. That is comparing the performance of
26、the reference mortar containing an admixture (test mix) with the performance of the reference mortar without an admixture (control mix). The air content of the control mix shall not exceed 5 % by volume when determined in accordance with EN 1015-7, method A. 5 Production of reference mortar with sta
27、ndard consistence 5.1 Mix proportions The control and test mixes shall be in accordance with Table 2. Table 2 Mix details Control mix Test mix Sand 3 440 g 3 440 g Cement 640 g 640 g Admixture Nil Compliance Dose Water As required As required Consistence measured according to EN 10154 (40 5) mm With
28、in 3 mm of consistence of control mix Record to the nearest 1 g the total quantity of water required (including any contributed by the admixture). For test mix mortars, the quantity of admixture added shall be sufficient to produce the required air content and retardation time if appropriate. The do
29、se of admixture shall be recorded. 1) Distilled or deionised water can be used for special tests. BS EN 480-13:2015EN 480-13:2015 (E) 6 5.2 Mixing procedure Prior to mixing, each of the constituents shall be conditioned to a temperature of (20 2) C. Place all the sand and then the cement in the mixi
30、ng bowl of a mixer complying with EN 196-1 and mix for 30 s at low speed. Continue mixing and add half of the mixing water during the next 30 s and mix for a further 60 s. During a further 30 s of mixing, add the third quarter of the water and the admixture2). During a further 30 s of mixing, add th
31、e final quarter of the mixing water. If necessary, the quantity of water shall be adjusted to obtain the required consistence. Continue mixing at low speed for 60 s after all the water has been added. Stop the mixer for 60 s and during this time remove any unmixed material from the sides and bottom
32、of the bowl using the mixer paddle. Restart the mixer at high speed and mix for 60 s. Total mixing process time shall be 6 min. Immediately after completion of mixing, the consistence shall be determined in accordance with EN 1015-4 and the air content in accordance with EN 1015-7, method A. If the
33、required consistence and air content are not achieved, the mix shall be discarded. A new test mix shall be prepared with the water content adjusted. 5.3 Mortar for test after standing Prepare a test mix as described in 5.1 and 5.2. Cover the mixing bowl to prevent loss of water by evaporation and al
34、low to stand for the period of time prescribed in EN 934-3. After the required standing period from completion of mixing, remix the mortar in the bowl for 10 s using a palette knife. 5.4 Mortar for test after extended mixing Prepare a test mix as described in 5.1 and 5.2. Then continue mixing at low
35、 speed for a further 15 min. 6 Calculation of water reduction (air entraining/plasticizing admixtures) Calculate the percentage water reduction, W, resulting from inclusion of the admixture, from the following formula: ( )100=CTCW where C is the water requirement of the control mix in g; T is the wa
36、ter requirement of the test mix in g. The water reduction shall be reported to the nearest 1 %. 2) If recommended by the manufacturer, admixtures can be added at a different time in the mixing sequence. BS EN 480-13:2015EN 480-13:2015 (E) 7 7 Test report The test report shall include the following i
37、nformation for control and test mixes: Cement: Factory where produced; Type; C3A content; Specific surface area; Sand: Source; Type; Grading; Consistence; Air content; Water content of each mix; Water reduction of test mix (for air entraining/plasticizing admixtures); Admixture name, batch/reference
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