1、STD-BSI BS EN L2370-ENGL 1999 I Lb24bb9 0789355 583 BRITISH STANDARD Natural stone test methods - Determination of resistance to salt crystallization The European Standard EN 12370: 1999 has the status of a British Standard ICs 91.100.16 BS EN 123 70: 1999 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS
2、 PERMITTED BY COPYRIGHT LAW I STDOBSI 6s EN L2370-ENGL L777 I Lb24bb9 0787356 7LT I been prepared under the Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 August 1999 direction of the Sector Amd. No. O BSI 08-199
3、9 BS EN 12370:1999 Date Comments National foreword This British Standard is the English language version of EN 123701999. The UK participation in its preparation was entrusted to Technical Committee WS5, Naturd stone, which has the responsibility to: - aid enquirers to understand the text; - present
4、 to the responsible European cornmittee any 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 committee can be obtained on
5、request to its secretary. 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 o
6、f the BSI Standards Electronic Catalogue. A British Standard does not purport to include all 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.
7、 Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. The BSI copyright notice displayed throughout this document indicates when the document was last issued. ISBN O 580 32292 O STDUBS1 BS EN 12370-ENGL
8、 1999 II Lb24bb9 0789157 bSb I EUROPEAN sL4N-DARD EN 12370 NORME RTR0PZ“E EUROP- NORIM March 1999 ICs 73.020 91.100.15 English version Natuml stone test methods - Determination of resistance to salt crystallization Mthodes dessai pour pierres naturelles - Dtemunaton de la rsistance par un essai de c
9、ristallisation des sels prufverfahren fur Naturstein - Bestimmung des Widerstandes gegen Kristallisation von salzen This European Standard was approved by CEN on 12 February 1999. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this
10、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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (Eng
11、lish, French, German). A veision in any other ianguage made by lmnshtion under the responsibility of a CEN member into its own hguage and notified to the Central Secretariat has the same status as the officiai versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republi
12、c, Demark Finland, France, Germanx Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normahation Europisches Komitee fr Normung Centrd Secretariat: rue de Stassart 36,
13、 B-1050 Brussels O 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 123701999 E Page 2 EN 123701999 Foreword This European Standard has been prepared by Technical Committee CENRC 246, Natural stones, the Secretariat of which is
14、 held by UNI. This European Standard shali be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 1999, and conflicting national standards shall be withdrawn at the latest by September 1999. This draft standard is one of t
15、he series of raft stanards for tests on naW stone. Test methods for natural stone consist of the following parts. EN 1925, Natural stone test methods - Determination of water absorption coefficient by capillarity. EN 1926, Na,tural stone test methods - Deteminatikm of cornpressive strength. EN 1936,
16、 Natural stone test methods - Determination of red density and apparent density and of total and open porosity . prEN 12371, Natural stone test methods - Determination of frost resistance. EN 12372, Natural stone test methods - Dekmninati,on of jexurd strength under concentrated load. prEN 12407, Na
17、,tuml stone test methods - Petrographic description. prEN 13161, Natural stone test methods - Determination of jexurd strength under constant moment. prEN 13364, Na,tural stone test methods - Determination of the breaking load at a# douiel hole. prEN 13364 (WI 00246011), Naturai stone test methods -
18、 Determination of themzal dilatation coff2cient. prEN 13364 (WI 002460012), Natural stone test methods - Determination of sound - speed propagation. prEN 13364 (WI 00246014), Naturai stone test methods - Determination of abmsion resistance. prEN 13364 (WI 00246015), Natural stone test methods - Dete
19、rmination of Knoop hardness. prEN 13364 (WI 00246016), Natural stone test methods - Determination of tlxrmal shock resfstance. prEN 13364 (WI 00246017), Natural stone test methods - Determination of slip coefficient. prEN 13364 (WI 00246018), Natural st0.w test methods - Determination of static elas
20、tic modulus. prEN 13364 (WI 00246019), Natural stone test methods - Determination of rupture energy. prEN 13364 (WI 00246030), Natural stone test methods - Determination of sut$zcej?niShes prEN 13373, Natural stone test methods - Determination of geometric characteristics on units. prEN 13373 (WI 00
21、246032), Natural stone test methods - Determination of resistance to ageing by salt ,mist. prEN 13373 (WI 00246033), Natural stone test methods - DetemzZnatwn of resistance to ageing by humidity, temperature, SO2 action. prEN 13373 (WI 00246035), Natural stone test methods - Detmination of dynamic e
22、lastic modulus y fundamental resonance frequency). prEN 13373 (WI 00246036), Na,tura,l stone test methods - Detmiination of wa,ter absorption at atmospheric pressure. It is intended that other ENS should call up this EN 12370 as the basis of evaluation of conformity. (Nevertheless it is not intended
23、 that all natural stones products should be subjected regularly to all the listed tests. Specifications in other standards should call up only relevant test methods). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imple
24、ment this European Standard Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Swizerland and the United Kingdom. (rugosity). Contents Foreword Introduction 1 Scope 2 Normative references 3 P
25、rinciple 4 Symbols 5 Apparatus 6 Preparation of specimens 7 Procedure 8 Expression of results 9 Testreport Page 2 3 3 3 3 3 3 3 3 4 4 O BSI O81999 STDmBSI BS EN 12370-ENGL 1999 Lb24bb9 0789359 429 111 Page 3 EN 123701999 Introduction This test is designed to assess the salt crystalbation resistance
26、of natural stones where it is considered relevant The test can not be used in isolation and results will be considered with other physical tests to indicate durability, these include prEN 12371, Determination of frost resistance. 1 Scope “his European Standard specifies a test method to assess the r
27、elative resistance of natural stones with an open porosity of greater than 5 %, measured in accordance with EN 1936, to damage caused by the cq (300 f 25) ml has been found to be adequate in an oven capable of holding 48 specimens, for example a 125 1 capacity. The specimens are left in the oven for
28、 at least 16 h and then they are cooled at room temperature for (2,O * 0,5) h before resoaking in fresh sodium sulfate solution. The cycle of operation is carried out 15 times in ali, except when the specimens break up before this. After the 15th cycle the specimens are removed from the oven and sto
29、red for (24 f 1) h in water at (23 f 5) OC, finally, they are washed thoroughly with flowing water. The specimens are weighed after drymg to constant mass (as in 6.4) if they are sufficiently coherent. If the test is to be interupted at any time, the specimens are to be lefi in the oven at (105 5) O
30、C. 8 Expression of results The results are expressed as relative mass difference AM (mass loss or gain) as a percentage of the initial dry mass b) the number, title and date of issue of this European Standard c) the name and address of the test laboratory and the address of where the test was carrie
31、d out if different from the test laboratory; d) the name and address of the client; e) it is the responsibility of the client to supply the following information: - the petrographic name of the stone; - the commercial name of the stone in accordance with prEN 12440; - the country and region of extra
32、ction; - the name of the supplier; - the direction of any existing plane of anisotropy (i relevant to the test) to be clearly indicated on the sample or on each specimen by means of two parallel lines; - the name of the person or organization which carried out the sampling; - the surface finish of t
33、he specimens (if relevant to the test); f) the date of delivery of the sample or of the specimens; g) the date when the specimens were prepared (ifrelevant) and the date of testing; h) the number of specimens in the sample; i) the dimensions of the specimens; j) for each test specimen, the percentag
34、e mass change; k) the arithmetic mean of the results for the test specimens; 1) all deviations from the standard and their justification; m) remarks. The test report shall contain the cignature(s) and role(s) of the responsible(s) for the testing and the date of issue of the report. It shall &o stat
35、e that the report sha not be partially reproduced without the written consent of the test laboratoqz O BSI 08-1999 BS EN 12370 1999 BSI 389 Chiswick High Road London w4 4AL STD-BSI BS EN 12370-ENGL 1999 I Lb24bbS 07891b1 Od? I BSI - British Standards Institution BSI is the independent national body
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