BS-EN-15304-2007.pdf
《BS-EN-15304-2007.pdf》由会员分享,可在线阅读,更多相关《BS-EN-15304-2007.pdf(18页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 15304:2007 Determination of the freeze-thaw resistance of autoclaved aerated concrete The European Standard EN 15304:2007 has the status of a British Standard ICS 91.100.30 ? Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:20:12 GMT+00:
2、00 2007, Uncontrolled Copy, (c) BSI BS EN 15304:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 BSI 2007 ISBN 978 0 580 54454 5 National foreword This British Standard was published by BSI. It is the UK implementation of EN
3、15304:2007. The UK participation in its preparation was entrusted to Technical Committee B/523, Prefabricated components of reinforced autoclaved aerated concrete and lightweight aggregate concrete with open structure. A list of organizations represented on this committee can be obtained on request
4、to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Li
5、censed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:20:12 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15304 June 2007 ICS 91.100.30 English Version Determination of the freeze-thaw resistance of autoclaved aerated
6、 concrete Dtermination de la rsistance au gel/dgel du bton cellulaire autoclav Bestimmung des Frost-Tau-Widerstandes von dampfgehrtetem Porenbeton This European Standard was approved by CEN on 10 May 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the
7、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
8、 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
9、 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. EUROP
10、EAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15304:2007: E Licensed Copy:
11、 London South Bank University, London South Bank University, Mon Jul 16 04:20:12 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15304:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references4 3 Principle4 4 Apparatus .4 5 Test specimens5 6 Testing procedure6 7 Test results.8 8 Test report9
12、 Annex A (informative) Determination of the loss in mass and compressive strength 10 Annex B (informative) Flow chart of freeze-thaw test13 Bibliography15 Figures Figure 1 Cutting scheme.6 Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:20:12 GMT+00:00 2007,
13、Uncontrolled Copy, (c) BSI EN 15304:2007 (E) 3 Foreword This document (EN 15304:2007) has been prepared by Technical Committee CEN/TC 177 “Prefabricated reinforced components of autoclaved aerated concrete or light-weight aggregate concrete with open structure”, the secretariat of which is held by D
14、IN. 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 2007, and conflicting national standards shall be withdrawn at the latest by December 2007. According to the CEN/CENELEC Internal Regul
15、ations, 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, Nethe
16、rlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom Licensed Copy: London South Bank University, London South Bank University, Mon Jul 16 04:20:12 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 15304:2007 (E) 4 1 Scope This document specifies a
17、 method of determining the freeze-thaw resistance of autoclaved aerated concrete manufactured according to prEN 12602 or EN 771-4. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. F
18、or undated references, the latest edition of the referenced document (including any amendments) applies. EN 678, Determination of the dry density of autoclaved aerated concrete EN 679:2005, Determination of the compressive strength of autoclaved aerated concrete EN 1353, Determination of the moistur
19、e content of autoclaved aerated concrete EN 12390-4, Testing hardened concrete Part 4: Compressive strength Specification for testing machines 3 Principle Cubic test specimens (two equal groups consisting of main test specimens and reference test specimens) are cut from products sampled from normal
20、production, saturated in water for 48 h, removed and then placed in polythene bags or similar protecting against drying for 24 h to equilibrate. The main test specimens are subjected to repeated freezing at 15 C for at least 8 h followed by thawing in an environment of 95 % relative humidity and 20
21、C for at least 8 h. The reference test specimens are stored in a climatic chamber at 20 C in conditions that prevent drying of the AAC during storage. After the specified number of freeze-thaw cycles (not less than 15), the mass loss of the main test specimens is determined. The dry density and mois
22、ture content is also determined on the reference test specimens. If the loss in compressive strength is also required to be determined, then Annex A should be followed. NOTE Depending on the conditions at the place of use, the number of freeze-thaw cycles can be specified by national provisions. 4 A
23、pparatus a) saw with rotating carborundum or diamond blade or similar equipment for cutting test specimens; b) balance, capable of determining the mass of the test specimens to an accuracy of 0,1 %; c) callipers, capable of reading the dimensions of the test specimens to an accuracy of 0,1 mm; d) co
24、ntainer, to store the test specimens under water at (20 2) C; e) feeler gauge, capable of measuring 0,1 mm, (if required) 0,5 mm and 1 mm; f) conditioned room or cabinet for thawing of the main test specimens able to maintain a relative humidity 95 % at (20 2) C; g) storage room for reference test s
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS EN 15304 2007
链接地址:https://www.31doc.com/p-3739541.html