EN 772-14-2001 en Methods of Test for Masonry Units - Part 14 Determination of Moisture Movement of Aggregate Concrete and Manufactured Stone Masonry Units《砌块的试验方法 第14部分 聚合混凝土和人造石料.pdf
《EN 772-14-2001 en Methods of Test for Masonry Units - Part 14 Determination of Moisture Movement of Aggregate Concrete and Manufactured Stone Masonry Units《砌块的试验方法 第14部分 聚合混凝土和人造石料.pdf》由会员分享,可在线阅读,更多相关《EN 772-14-2001 en Methods of Test for Masonry Units - Part 14 Determination of Moisture Movement of Aggregate Concrete and Manufactured Stone Masonry Units《砌块的试验方法 第14部分 聚合混凝土和人造石料.pdf(14页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD Methods of test for masonry units Part 14: Determination of moisture movement of aggregate concrete and manufactured stone masonry units The European Standard EN 772-14:2001 has the status of a British Standard ICs 91.100.30 BS EN 772- 14 12002 Wk present to the responsible European
2、 committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - - A list oforganizations represented on this subcommittee can be obtained on request to its secretary.
3、 Cross-references 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 Elec
4、tronic Catalogue. ABritish Standard does not purport toinclude all the necessary provisions ofa 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 docu
5、ment comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 31 January 2002 ISBN O 580 38985 5 EUROPEAN STANDARD NORME EUROPENNE EURO
6、PISCHE NORM EN 772-14 November 2001 ICs 91.100.30 English version Methods of test for masonry units - Part 14: Determination of moisture movement of aggregate concrete and manufactured stone masonry units Mthode dessai pour des lments de maonnerie - Partie: 14 dtermination de la variation due lhumid
7、it des lments de maonnerie en bton de granulats et en pierre reconstitue Prfverfahren fr Mauersteine - Teil 14: Bestimmung der feuchtebedingten Formnderung von Mauersteinen aus Beton und Betonwerksteinen This European Standard was approved by CEN on 13 October 2001 CEN members are bound to comply wi
8、th the CENKENELEC 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 Management Centre
9、 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 Management Centre has the same status as the official vers
10、ions. CEN members are the national 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 EUROPISCHES KO
11、MITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 772-14:2001 E EN 772-14:2001 (E) Contents Foreword 1 Scope 2 Normative re
12、ferences 3 Principle 4 Symbols 5 Apparatus 6 Preparation of specimens 7 Procedure 8 Expression of results 9 Evaluation of results 10 Test report page 3 4 4 4 4 5 5 7 9 9 10 2 EN 772-14:2001 (E) Foreword This European Standard has been prepared by Technical Committee CEN/TC 125 “Masonry“, the secreta
13、riat 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 May 2002, and conflicting national standards shall be withdrawn at the latest by March 2004. According to the CENKENEL
14、EC 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, Portugal, Spain, Sweden, Swit
15、zerland and the United Kingdom. 3 EN 772-14:2001 (E) 1 Scope This European Standard specifies a method of measuring the moisture movement of aggregate concrete and manufactured stone masonry units between two specified extreme moisture conditions. 2 Normative references This European Standard incorp
16、orates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this Euro
17、pean Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). prEN 771-3, Specijcation for masonry units - Part 3: Aggregate concrete masonry units (dense and lightweight aggregates). prEN
18、 771-5, Specijcation for masonry units - Part 5: Manufactured stone masonry units. 3 Principle This test measures, on masonry units of the same concrete compositions and the same sampling: a) the expansion between the initial condition and after soaking in water for 4 days; b) the shrinkage between
19、the initial condition and after drying for 21 days in a ventilated oven at 33 OC. 4 Symbols lo i lLi lZi Al, /I Al, /I Al, /I is the initial distance between gauge location pads, (mm) is the distance between gauge location pads after soaking, (mm) is the distance between gauge location pads after dr
20、ying, (mm) is the mean moisture expansion coefficient, (dm) is the mean drying shrinkage coefficient, (dm) is the total movement coefficient, (dm) 4 EN 772-14:2001 (E) Algl/l is the individual moisture expansion coefficient, (dm) Alri /I is the individual drying shrinkage coefficient, (dm) mo,s is t
21、he mass of specimen before drying, (g) md,s is the mass of specimen after drying, (g) ws is the moisture content, (“A) by mass 5 Apparatus 5.1 Gauge location pads. 5.2 Adhesive appropriate for use under the conditions given in 5.4 and 5.5. 5.3 Measuring device suitable for measuring changes in lengt
22、h with an accuracy of at least 0,002 mm. 5.4 Ventilated oven with a volume of at least 9 times the volume of the specimens to be dried at one time, capable of being maintained at a temperature of 33 “C f 3C. The oven is ventilated top and bottom for free convection or by a forced system that ensures
23、 at least 3 air changes per hour. 5.5 Tank of water, maintained at a temperature of 20 “C f 2 “C and of sufficient volume to hold all the specimens to be soaked at one time and to ensure free access of the water to all faces. 5.6 Weighing instrument capable of weighing the specimens with an accuracy
24、 of O, 1 %. 5.7 Calibration rods of Invar steel. 2 5.8 Four support pads per specimen of 1 cm maximum cross-section and with a minimum height of 10 mm. 6 Preparation of specimens 6.1 Sampling The test specimens shall consist of whole masonry units or be cut from whole masonry units. In every case th
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