ISO TS 16774-4-2016 Test methods for repair materials for water-leakage cracks in underground concrete structures - Part 4 Test method for adhesion on wet concr.pdf

1、 ISO 2016 Test methods for repair materials for water-leakage cracks in underground concrete structures Part 4: Test method for adhesion on wet concrete surface Mthodes dessai pour matriaux de rparation pour fissures dues leau dans les structures en bton souterraines Partie 4: Mthode dessai de ladhs

2、ion sur un substrat humide TECHNICAL SPECIFICATION ISO/TS 16774-4 Reference number ISO/TS 16774-4:2016(E) First edition 2016-08-01 ISO/TS 16774-4:2016(E)ii ISO 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no

3、 part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs membe

4、r body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO/TS 16774-4:2016(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms and defi

5、nitions . 1 4 Principle 1 5 Apparatus . 2 6 Preparation 2 6.1 Test specimen assembly as artificial water-leakage crack 2 6.2 Ambient conditions . 3 7 Procedure. 3 8 Expression of results 3 9 Test report . 3 9.1 Information on the repair material of the test target 3 9.1.1 General 3 9.1.2 Other infor

6、mation . 4 9.2 Information on the test 4 Annex A (informative) Example test method . 5 Bibliography .12 ISO 2016 All rights reserved iii Contents Page ISO/TS 16774-4:2016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO

7、member bodies). The work of preparing International Standards 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, govern

8、mental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintena

9、nce are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attenti

10、on is drawn to the possibility 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. Details of any patent rights identified during the development of the document will be in the Introduction a

11、nd/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformit

12、 y assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html. The committee responsible for this document is ISO/TC 71, Concrete, reinforced concrete and pre-

13、stressed concrete, Subcommittee SC 7, Maintenance and repair of concrete structures ISO/TS 16774 consists of the following parts, under the general title Test methods for repair materials for water-leakage cracks in underground concrete structures: Part 2: Test method for chemical resistance Part 3:

14、 Test method for water (wash out) resistance Part 4: Test method for adhesion on wet concrete surface The following parts are under preparation: Part 1: Test method for thermal stability Part 5: Test method for watertightness Part 6: Test method for response to the substrate movementiv ISO 2016 All

15、rights reserved ISO/TS 16774-4:2016(E) Introduction This Technical Specification is linked to ISO/TR 16475. ISO/TR 16475 outlines 6 basic properties and the required performance levels of water-leakage repair materials, and ISO/TS 16774 proposes a tentative, sample test methods that are capable of e

16、valuating the respective properties of the repair materials. The test methods in this Technical Specification are intended to serve as references for nations that have not yet developed a test method on the 6 proposed required performance properties of water-leakage repair materials. If other forms

17、of test methods that are simpler, more accurate or more organized are available, such methods are recommended for use instead. Many of the dependent variables outlined in the reference test methods of this Technical Specification are subject to change in accordance to the environmental conditions (t

18、emperature and humidity, chemical solution and concentration, width of movement activity, water pressure or water flow velocity, etc.) outlined in the standards used in respective countries. For ISO/TS 16774-1, ISO/TS 16774-5 and ISO/TS 16774-6, for the purpose of objectively comparing the performan

19、ce of injected repair materials, artificial cracks of same width, height, and volume were used to control the usage of repair materials for each testing cycle and enable repetition of the same test methods under the same conditions. ISO 2016 All rights reserved v Test methods for repair materials fo

20、r water-leakage cracks in underground concrete structures Part 4: Test method for adhesion on wet concrete surface 1 Scope This part of ISO/TS 16774 specifies a laboratory test method for indirectly measuring the adhesion performance of repair material to wet concrete crack surfaces by qualitatively

21、, as a pass/fail at predetermined time, against predetermined amount of weight exerted on the repair material adhesion. NOTE This part of ISO/TS 16774 classifies and categorizes materials that are tested into families of similar properties for the purpose of making relative comparisons with the data

22、 results. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including

23、 any amendments) applies. ISO/TR 16475, Guidelines for the repair of water-leakage cracks in concrete structures 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in ISO/TR 1 6 4 7 5 a n d t h e following apply. 3.1 repair material for water-leakage cracks

24、 grouting materials used for prevent water-leakage at crack in concrete Note 1 to entry: In this Technical Specification, target ingredients are limited to injection materials outlined in ISO/TR 16475. Note 2 to entry: SOURCE: ISO/TS 16774-2:, 3.1 4 Principle A repair materials ability to adhere to

25、a wet leakage crack surface is one of the fundamental properties that water-leakage repair materials should possess. Focus areas of repair material application are most often on concrete surfaces that are constantly wet and humid. During and after application, repair materials should be able to rema

26、in firm adhesion to concrete surface and should not fall off. This test method proposes that observing whether repair materials can retain adhesion on wet concrete surface against a constantly exerted weight can determine a repair materials adhesion performance on wet concrete surface. An example te

27、st method is provided in Annex A. Repair materials are injected in an artificially produced wet crack space formed by two separate concrete (or mortar) specimens, a top part that serves as an anchor, and another that serves as the any constant weight that pulls on the material adhesion surface. The

28、concrete specimen is then lifted and held in mid-air by the clamp (anchor) of adhesion tester to see if the material can maintain adhesion past the failure margin time against the weight of the bottom concrete specimen. TECHNICAL SPECIFICATION ISO/TS 16774-4:2016(E) ISO 2016 All rights reserved 1 IS

29、O/TS 16774-4:2016(E) 5 Apparatus 5.1 Adhesion tester. Adhesion tester should have 3 main parts: frame, clamp, and mobile support plate/mechanism. 5.2.1 Frame, used for levelling the specimen horizontally that can be set immobile during the progress of the test. 5.2.2 Clamp, can anchor the test speci

30、men securely and hold it suspended in mid-air during the test. 5.2.3 Mobile support plate/mechanism, used to initially secure the specimen prior to the testing. Once the testing starts, it shall be removable (left, right, top, down, in any direction) to allow the specimen to stay mid-air. Any appara

31、tus can be used, but it should allow the bottom concrete specimen that serves as the weight to pull against the material adhesion the wet surface during the testing. 5.2 Others. 5.2.1 Stop watch, used for testing the duration of adhesion of the material. 5.2.2 Injector, testing material injecting ap

32、paratus. 5.2.3 Water container. 6 Preparation 6.1 T est specimen assembl y as artificial w at er-leakage cr ack a) A water-leakage crack test specimen is prepared using two separate concrete or mortar parts (upper and bottom part) placed horizontally parallel to one another. One part (upper) is plac

33、ed over the other (bottom) with spacers in between, forming the test specimen with an artificial crack. NOTE The space height between the two concrete parts represents the width of the concrete crack. The height can vary according to different national standards. b) The crack space along the side is

34、 covered with silicon sealants, tape or other applicable materials along the exterior side of the artificial crack space to prevent leakage during injection. Any supplementary material can be used to hold the two parts together with a crack space in between, but should leave an inlet for material in

35、jection. c) The assembled specimen is placed underwater for a predetermined period (time subject to vary according to the different national standards applied to this test method). d) After taking the specimen out of the water, the repair material is injected into the space while the surface is stil

36、l wet. Injection method varies according different national standards. If manufacturers instructions are available, employment of such method is recommended.2 ISO 2016 All rights reserved ISO/TS 16774-4:2016(E) 6.2 Ambient conditions Keep the test room at temperature (20 3) C and humidity at (65 5)

37、% during the experiment unless specifically required otherwise. NOTE Temperature values are subject to change according to different national standards. Examples may include warmer countries with ranges that can reach up to (27 2) C and colder countries at (16 3) C, etc. The same applied to humidity

38、 conditions. 7 Procedure a) Place the test specimen on the support plate located at the adhesion tester. Raise the support plate up to the clamp located at the top of the adhesion tester and fix the upper concrete part on to the clamp (refer to procedure note). b) To begin testing, remove the suppor

39、t plate, letting the whole specimen suspend in mid-air and letting the weight of the bottom concrete part pull on the repair material adhesion on concrete surfaces. NOTE One of the two concrete parts adhered together by the injected repair material is fixed onto the clamp of adhesion tester and the

40、other concrete part alone acts as the weight to pull on the adhesion of the repair material. c) Observe the specimen to see if it maintains adhesion for a given period of time to pass the test method (adhesion maintenance time subject to change in accordance to different national standards) and reco

41、rd the adhesion time. d) If the material fails adhesion and falls off, end the test and record the results (the time at which material adhesion fails). Photos of the specimen and equipment conditions shall be taken at every stage possible during the each and every test procedure for recording and in

42、formation purposes. For detailed and clearer explanation, refer to Annex A. 8 Expression of results In this test method, repair materials are evaluated for their performance on wet concrete surface adhesion. The weight of the bottom concrete part of the specimen will exert a natural pulling force on

43、 the repair material adhesion. For all repair materials, the results of this test on whether the adhesion holds for the given period against the predetermined mass can be used to evaluate the repair material performance on wet surface adhesion. These results can be used as a data base for an evaluat

44、ion guideline in future cases of selecting appropriate repair materials with the required properties of adhesion on leakage crack surfaces of underground concrete structures. 9 Test report 9.1 Information on the repair material of the test target 9.1.1 General The test report should record the follo

45、wing information on repair material of the test target: a) manufactured date, time, place of the repair material; b) manufacturer (name, address, phone number); c) type, storage method and authentication of the repair material; ISO 2016 All rights reserved 3 ISO/TS 16774-4:2016(E) d) guideline and m

46、anual on how to use and apply the repair material; e) data on chemical composition of repair material as indicated in manufacturers data sheet. 9.1.2 Other information The following information is recorded on demand if required: 1) objective of the testing and related; 2) applicable areas in constru

47、ction sites using the test specimen; 3) result of eco-toxicological performance tests to account for the release of hazardous substance and the subsequent effects on health and safety. 9.2 Information on the test The test report should record the following information on the test: a) test manager; b

48、) name, purpose of the test; c) ambient condition of the lab (temperature, humidity, safety conditions etc.); d) production time and place of the specimens; e) shape and size of the specimens; f) identification of the specimens (Lot No. etc); g) curing and storage conditions; h) information on the t

49、est repair material (name, producer, validity etc.); i) test data (production, measurement, test period etc.); k) type of facilities, equipment, tools; k) status of test equipment, tools; l) test results; m) details on other test programs and procedures.4 ISO 2016 All rights reserved ISO/TS 16774-4:2016(E) Annex A (informative) Example test method A.1 Principle This example test method evaluates the adhesiveness performance of repair material on wet leakage crack surface. The test repair material is injected