1、STDmBSI BS EN 772-19-ENGL 2000 m Lb24bb9 0858075 BLib m BRITISH STANDARD Methods of test for masonry units - Part 19: Determination of moisture expansion of large horizontally perforated clay masonry units The European Standard EN 772-192OOO has the status of a British Standard ICs 91.080.30; 91.100
2、.15 NO COPYING WITHOUT BSI PERMISSION EXCEPT As PERMITTED BY COPYRIGHT LAW BS EN 772-19:ZOOO STD-BSI BS EN 772-17-ENGL 2000 I lh24bb7 085807b 782 111 BS EN 772-19:2000 direction of the Sector CommiAee for Building and Civil Engineering, was published under the authority of the Standards Committee an
3、d comes into effect on 15 July ZOO0 Amd. No. O BSI 07-2000 National foreword Date Comments This British Standard is the official English language version of EN 772-192000 which is included in a package of new European Standards being prepared by CENmC 125 relating to clay masonry units. No British S
4、tandard is superseded. The UK participation in its preparation was entrusted by Technical Committee B19, Masonry and associated tests, to Subcommittee B/519/1, Masonry units, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any
5、enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; them in the UK A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references
6、 The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards Electsonic Catalogue.
7、 A British Standard does not purport to include ali the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises
8、 a kont cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. ISBN O 580 34982 9 STD=BSI BS EN 772-Lq-ENGL 2000 E Lb2YbbS 0858057 b19 E EUROPEAN STANDARD EN 772-19 NORME EUROPEN
9、NE EUROPISCHE NORM March 2000 ICs 91.100.15 English version Methods of test for masonry units - Part 19: Determination of moisture expansion of large horizontally perforated clay masonry units Mthodes dessai des lments de maonnerie - Partie 19: Dtermination de la dilatation lhumidit des grands lment
10、s de maonnerie en terre cuite perfors horizontalement PrOfverfahren fr Mauersteine -Teil 19: Bestimmung der Feuchtedehnung von horizontal gelochten groen Mauerziegeln This European Standard was approved by CEN on 17 February 2000. CEN members are bound to comply with the CENICENELEC Internal Regulat
11、ions which stipulate the conditions for giving this Europsan Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This Euro
12、pean Standard exists in three oficial versions (English, French, German). A version in any other language made by trnslation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as he official versions. CEN members are the nationa
13、l standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEEN DE NORMALISATION EUROPISCHES KOM
14、ITEE FUR NORMUNG Central Secretariat: rue de Stassari, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 772-1 9:2000 E . STD-BSI BS EN 772-19-ENGL 2000 H Lb24bb7 0858098 555 S Page 2 EN 772-1 9:2000 Contents
15、Page Foreword - 3 1 Scope 4 2 Normative references . 4 3 Principle . 4 4 Symbols 4 5 Apparatus . 5 6 Sampling . 5 7 Procedure . . 5 8 Expression of results . 7 9 Test report . 7 O BSI 07-2000 Page 3 EN 772-19:2000 Foreword This European Standard has been prepared by Technical Committee CEN/TC 125, M
16、asonry, the secretariat of which is held by BSI. 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 2000, and conflicting national standards shall be withdrawn at the latest by September 20
17、00. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
18、Portugal, Spain, Sweden, Switzerland and the United Kingdom. , O BSI 07-2000 Page 4 EN 772-1 912000 1 Scope This European Standard specifies an accelerated method of determining the moisture expansion of large clay units with horizontal perforations that have one dimension equal to or greater than 4
19、00 mm and shell thicknesses less than 12 mm. 2 Normative references This European Standard incorporates by dated or undated reference, provision from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated re
20、ferences, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. prEN 77 1-1 Specification for masonry units - Part 1
21、: Clay masonry units 3 Principle This test measures the length change of test specimens caused by subjecting them to boiling water for a 24 h period. 4 Symbols li Ri, 1s 1 L2 mi ls3 Is4 Ln2 is the initial length an individual specimen after kiln refiring and cooling at ambient temperature, (mm) is t
22、he reading fiom the invar reference bar using the direct reading gauge, (mm) is the first deviation which is the difference between the first reading from an individual specimen ( e, = x i 000 (mm/m) 4 From the individual values (e,) calculate the mean value of the moisture expansion (e,) to the nea
23、rest 0,l dm. 9 Test report The test report shall contain the following information: a) the number, title and date of issue of this European Standard, b) the name of the organization that carried out the sampling and the method used; c) the date of testing; d) the type, origin and designation of the
24、masonry Unit by reference to prEN 771-1; e) the number of specimens in the sample; f) the date of delivery of the specimens to the testing laboratory; O BSI 07-2000 Page 8 EN 772- 19:2000 g) the moisture expansion es for each specimen expressed in mdm, to the nearest 0,i mdm; h) the mean value e, of
25、 moisture expansion expressed in mdm, to the nearest 0,l mdm; i) remarks (if any). / 6 1 6 / /2 /3 v SL /4 /5 iJ i 1 2 Invar reference bar 4 Specimen 5 Contact of measuring frame Dial or digital measuring gauge 3 support Figure 1 - Measuring frame showing measurement of invar reference bar and of sp
26、ecimen O BSI 07-2000 STD*BSI BS EN 772-17-ENGL 2000 = Lb29bb7 0858105 515 1 2 3 1 Invar bar 2 Specimen after refixing 3 Specimen after boiling water treatment a) case where the invar bar is shorter than the specimen 1 t h i - 3 b) case where the invar bar is longer than the specimen Key 1 2 3 Invar
27、bar Specimen after refiring Specimen after boiling water treatment Figure 2 - Examples of deviations Page 9 EN 772-19:2000 O BSI 07-2000 BS EN 772-19:2000 BSI 389 Chiswick High Road London w4 4AL STD-BSI BS EN 772-17-ENGL 2000 = lb24bb9 OB5BLOb 451 W BSI - British Standards Institution BSI is the in
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