1、BRITISH STANDARDBS EN 480-5:2005Admixtures for concrete, mortar and grout Test methods Part 5: Determination of capillary absorptionThe European Standard EN 480-5:2005 has the status of a British StandardICS 91.100.10; 91.100.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g
2、53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 480-5:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 December 2005 BSI 12 December 2005ISBN 0 580 47
3、269 8National forewordThis British Standard is the official English language version of EN 480-5:2005. It supersedes BS EN 480-5:1997 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/3, Admixtures, which has the re
4、sponsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled
5、 “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with
6、 a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international
7、 and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover.The BSI copyright date displayed in this document indicates when the document was last issued.
8、Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 480-5September 2005ICS 91.100.10; 91.100.30 Supersedes EN 480-5:1996 English VersionAdmixtures for concrete, mortar and grout - Test methods - Part5: Determination of capillary absorptionAdjuva
9、nts pour bton, mortier et coulis - Mthodes dessai -Partie 5: Dtermination de labsorption capillaireZusatzmittel fr Beton, Mrtel und Einpressmrtel -Prfverfahren - Teil 5: Bestimmung der kapillarenWasseraufnahmeThis European Standard was approved by CEN on 28 July 2005.CEN members are bound to comply
10、with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretar
11、iat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialve
12、rsions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switze
13、rland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 48
14、0-5:2005: EEN 480-5:2005 (E) 2 Contents Page Foreword 3 1 Scope .4 2 Normative references .4 3 Principle.4 4 Apparatus 4 5 Reference mortar 4 6 Test specimens .5 7 Procedure 5 8 Results.6 9 Test report .6 EN 480-5:2005 (E) 3 Foreword This European Standard (EN 480-5:2005) has been prepared by Techni
15、cal 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 March 2006, and conflicting national standards sh
16、all be withdrawn at the latest by March 2006. It has been drafted by Subcommittee 3 (SC 3) of TC 104 “Admixtures for concrete, mortar and grout“. This document is part of the series EN 480 “Admixtures for concrete, mortar and grout Test methods“ which comprises the following Part 1 Reference concret
17、e and reference mortar for testing Part 2 Determination of setting time Part 4 Determination of bleeding of concrete Part 5 Determination of capillary absorption Part 6 Infrared analysis Part 8 Determination of the conventional dry material content Part 10 Determination of water soluble chloride con
18、tent Part 11 Determination of air void characteristics in hardened concrete Part 12 Determination of the alkali content of admixtures Part 13 Reference masonry mortar for testing mortar admixtures Part 14 Admixtures for concrete, mortar and grout - Test methods - Part 14: Measurement of corrosion su
19、sceptibility of reinforcing steel in concrete - Potentiostatic electro-chemical test method 1)This document is applicable together with the other standards of the EN 480 series. This document will supersede EN 480-5:1996. According to the CEN/CENELEC Internal Regulations, the national standards orga
20、nizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, S
21、lovenia, Spain, Sweden, Switzerland and United Kingdom. A.1.1 1) This part is under preparation EN 480-5:2005 (E) 4 1 Scope This document describes a test method for the determination of the effect of admixtures on the capillary absorption of mortar. 2 Normative references The following referenced d
22、ocuments are indispensable for the application of this document. 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
23、 413-2, Masonry cement - Part 2: Test methods EN 480-1, Admixtures for concrete, mortar and grout - Test methods - Part 1: Reference concrete and reference mortar for testing 3 Principle The test consists of measuring the mass of water absorbed by a mortar test sample under specified conditions. 4 A
24、pparatus 4.1 Balance with an accuracy of 0,1 g; 4.2 Receptacle 200 mm high large enough to contain twelve prismatic specimens with a flat base and a cover; 4.3 A means of allowing a constant level of water to be maintained in the receptacle; 4.4 Equipment for the preparation of (40 x 40 x 160) mm pr
25、isms made of mortar that conforms to EN 196-1; 4.5 An enclosure controlled at (20 2) C and (65 5) % relative humidity. 5 Reference mortar The reference mortar shall be as specified in EN 480-1. The test mix shall either have the same consistence as the control mix as described in EN 480-1 or the tes
26、t mix shall have the same water/cement ratio as the control mix2). The water content of the admixture shall be taken into account when calculating the required water content of the test mix. A.1.1 2) The use of constant consistence or constant water/cement ratio is specified in the requirements or a
27、greed between the purchaser and supplier. EN 480-5:2005 (E) 5 6 Test specimens 6.1 Preparation of test specimens Materials for the control mix and test mix, and moulds for the test specimens, shall be conditioned for at least 24 h before use. Conditioning shall be by placing in an enclosure maintain
28、ed at (20 2) C and (65 5) % relative humidity. Mixing of the mortar shall be as described in EN 480-1. Mortar specimens (40 x 40 x 160) mm shall be prepared as described in EN 196-1, except that the moulds shall not be oiled. When testing at equal w/c ratio, the water content of the admixture shall
29、be taken into account when calculating the required water content of the mortar. In case the test mix shall have the same consistence as the control mix this shall be measured by using the workability meter in accordance with EN 413-2. 6.2 Number of specimens Twelve specimens shall be tested as foll
30、ows: 6 specimens for control mix; 6 specimens for test mix. 6.3 Curing of specimens On both the control mix and the test mix, two series of measurements of capillary absorption, shall be carried out. The first series shall be performed on three specimens of test mix and three specimens of control mi
31、x after 7 days curing. The second series shall be carried out on the other specimens after 90 days curing. The specimens shall be demoulded after 24 h and further cured in the enclosure (see 4.5) until 7 days and 90 days old respectively. 7 Procedure 7.1 Placing specimens The specimens shall be weig
32、hed (Mo) in the enclosure (see 4.5) when 7 days or 90 days old as appropriate and placed vertically in a receptacle (see 4.2) containing water at a constant level. The samples shall rest on rods or pins to allow free access of water to the base. The water level shall be maintained at (3 1) mm above
33、the base of the specimen. Avoid contact between the specimens Immediately after placing the specimens in position, put the cover on the receptacle. 7.2 Weighing At the time specified in 7.3, each specimen shall be removed from the receptacle, wiped lightly with dry paper or cloth in order to remove
34、any surplus water, weighed (Mj) and then again put vertically in the receptacle. The other specimens in each series shall be treated individually in the same way. EN 480-5:2005 (E) 6 7.3 Test schedule a) Specimens cured for 7 days under the conditions specified in 6.3 shall then be weighed after 1 d
35、ay and after 7 days in contact with water as described in 7.2. b) Specimens cured for 90 days under the conditions specified in 6.3 shall then be weighed after 1 day, 7 days and 28 days in contact with water as described in 7.2. 8 Results The results obtained by testing three specimens at each date,
36、 for each type of mortar (control mix and test mix) are expressed as the means of the three measured values. Capillary absorption (CA) after the required time is given in g/mm by 1600ojAMMC= (1) where Mois the mass of the specimen after curing for 7 days or 90 days, in grams; Mjis the mass of the sp
37、ecimen after the required absorption time, in grams. 9 Test report The test report shall include at least the following information: Date of test; Materials used in the reference mortar; Details of the admixture and dosage used in the test mix; Whether tested at equal w/c or equal consistence Indivi
38、dual and average results for the capillary absorption at each age tested Person who is performing the test. blankBS EN 480-5:2005BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK
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