1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 11527:2010Building construction Sealants Test method for thedetermination of stringinessBS ISO 11527:2010 BRITISH STANDARDNational forewordThis British Standard is the UK
2、implementation of ISO 11527:2010.The UK participation in its preparation was entrusted to TechnicalCommittee B/547, Sealants for building and construction.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all
3、 the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 65514 2ICS 91.100.50Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Stra
4、tegy Committee on 30 November 2010.Amendments issued since publicationDate Text affectedBS ISO 11527:2010Reference numberISO 11527:2010(E)ISO 2010INTERNATIONAL STANDARD ISO11527First edition2010-11-15Building construction Sealants Test method for the determination of stringiness Construction immobil
5、ire Mastics Mthode dessai pour la dtermination du pouvoir filant BS ISO 11527:2010ISO 11527:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embed
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10、d in Switzerland ii ISO 2010 All rights reservedBS ISO 11527:2010ISO 11527:2010(E) ISO 2010 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standar
11、ds is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take
12、 part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is
13、to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility
14、 that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11527 was prepared by Technical Committee ISO/TC 59, Buildings and civil engineering works, Subcommittee SC 8, Sealants. BS ISO 11527:
15、2010BS ISO 11527:2010INTERNATIONAL STANDARD ISO 11527:2010(E) ISO 2010 All rights reserved 1Building construction Sealants Test method for the determination of stringiness 1 Scope This International Standard specifies a method for the determination of the stringiness of a wet-applied sealant. 2 Norm
16、ative references The following referenced documents 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. ISO 6927, Building construction
17、Jointing products Vocabulary for sealants1)3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 6927 apply. 4 Principle This method determines the stringiness of a sealant by measuring the maximum length of a strand or string which can be pulled from a we
18、t sealant sample. A probe (tip) is forced into the wet sealant sample. After a short time, the probe is removed from the sample using a constant rate of pull. An extensometer or similar apparatus is used to provide a constant rate of pull, and the maximum travel before the “string” breaks is reporte
19、d in millimetres. 5 Apparatus 5.1 Extensometer or similar apparatus Extensometer or other apparatus, e.g. pneumatic piston, which allows a grip to be pulled at a constant rate and provides a reading of the distance between the grips to the nearest millimetre. 5.2 Probe Tip 1 (round) according to Fig
20、ure 1. Tip 2 (conical) according to Figure 2. Tip made of aluminium. 1) Under revision. BS ISO 11527:2010ISO 11527:2010(E) 2 ISO 2010 All rights reservedDimensions in millimetres Figure 1 Tip 1 Dimensions in millimetres Figure 2 Tip 2 5.3 Container Container from any suitable source, with a minimum
21、depth of 30 mm and a minimum diameter of 30 mm. 6 Conditioning The sealant shall be shelf-aged for a minimum of 1 d from production. Prior to preparation of the specimen, the sealant, the container and the probe (tip) shall be conditioned for 6 h in the unopened container at the test temperature, e.
22、g. (23 2) C. 7 Preparation of test specimens Fill the container with the sample and remove excess with a spatula to provide a clean, smooth surface free of bubbles. 8 Test procedure Attach the probe (tip) to the upper clamp of the extension device (e.g. the extensometer). Fix the container to the lo
23、wer clamp of the extension device. Slowly raise the container with the wet sealant or move the probe downwards until the nozzle just touches the sample surface. This is the “zero” reading. Alternatively, the “zero” reading can be determined by placing a sheet of paper on the container (assuming the
24、sealant is tooled evenly with the upper edges of the container). Raise the container with the wet sealant further or move the tip downwards at a rate of 60 mm/min until the tip of the nozzle is submerged a minimum of 10 mm into the sample. Begin the test by moving either the probe upwards or the con
25、tainer with the sealant sample downwards at a rate of 700 mm/min. Stop the extension machine when the string formed between the sealant in the container and the tip breaks and report the length of the string at break (Lmax). Do not clean the tip. BS ISO 11527:2010ISO 11527:2010(E) ISO 2010 All right
26、s reserved 3Repeat the test two more times (it is not necessary to smooth the surface and to clean the tip between tests). Then take another specimen (container with wet sealant) and repeat the test (making three new measurements), i.e. generate six measurements in total. NOTE For slow-curing sealan
27、ts, sequential measurements can be carried out on the same sealant specimen. 9 Expression of results Report the individual readings and the average over the second, third, and fourth trials to the nearest millimetre. The repeatability of the value reported (the maximum difference between two indepen
28、dent results) should not exceed 4 mm at the 95 % confidence level. If the sample surface cures before measurements are complete, results will be in error. If either the highest or lowest of the three measurements is greater than 15 % from the median, discard the data and repeat the test from the ini
29、tial preparation. 10 Test report The test report shall include at least the following information: a) name of test laboratory, number and date of test report; b) reference to this International Standard; c) name, type (chemical family) and colour of sealant; d) batch of sealant from which the test s
30、pecimens were produced, if possible; e) test temperature; f) individual and average measurement values for stringiness; g) any deviations from the specified test conditions. BS ISO 11527:2010ISO 11527:2010(E) ICS 91.100.50 Price based on 3 pages ISO 2010 All rights reserved This page deliberately le
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