1、 Reference number ISO 4635:2011(E) ISO 2011INTERNATIONAL STANDARD ISO 4635 Second edition 2011-02-15 Rubber, vulcanized Preformed joint seals for use between concrete paving sections of highways Specification Caoutchouc vulcanis Joints dtanchit prforms utiliss entre les dalles en bton des routes Spc
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5、 address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from eithe
6、r ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedISO 4635:2011(E) ISO 201
7、1 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Classification .2 5 Test pieces and temperature of test3 6 Requirements.3 6.1 General .3 6.2 Dimensional tolerances 3 6.3 Imperfections and defects3 6.4 Hardness 3 6.5 Tensile strength an
8、d elongation at break .3 6.6 Compression set in air4 6.7 Accelerated ageing in air5 6.8 Stress relaxation in compression5 6.9 Recovery at low and elevated temperatures 5 6.10 Low-temperature hardness change.5 6.11 Ozone resistance.5 6.12 Effect of water6 6.13 Protection against over-extension 6 6.14
9、 Functional testing for cold climates7 7 Marking, labelling and storage.7 Annex A (normative) Recovery at low and elevated temperatures .8 Annex B (normative) Functional testing for cold climates.9 ISO 4635:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Stand
10、ardization) is a worldwide federation of national standards bodies (ISO 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
11、to be represented on that committee. International organizations, governmental 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. International St
12、andards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an I
13、nternational Standard requires approval by at least 75 % of the member bodies casting a vote. Attention 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. ISO 463
14、5 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). This second edition cancels and replaces the first edition (ISO 4635:1982), which has been technically revised. The main modifications are as follows: The hardness classes hav
15、e been changed from IRHD 55, IRHD 60, IRHD 65 and IRHD 70 to IRHD 40, IRHD 50, IRHD 60, IRHD 70 and IRHD 80. Hardness tolerances have been added. Requirements have been added for compression set at low temperature, stress relaxation in compression and protection against over-extension. Clauses have
16、been included on functional testing for cold climates, the effect of water, and marking, labelling and packaging. The requirements for recovery at low and elevated temperatures have been changed. In addition, the ozone resistance is now measured only under normal conditions (50 pphm ozone) and not u
17、nder the alternative severe conditions (200 pphm ozone). The temperature at which the compression set at elevated temperature is measured has been changed from 100 C to 70 C. INTERNATIONAL STANDARD ISO 4635:2011(E) ISO 2011 All rights reserved 1Rubber, vulcanized Preformed joint seals for use betwee
18、n concrete paving sections of highways Specification CAUTION Manufacturers shall ensure that emissions from their products of substances which could be hazardous to health or to the environment are not in excess of the legally permitted level in the country of use. 1 Scope This International Standar
19、d specifies requirements for material for preformed vulcanized rubber joint seals used between concrete paving sections of highways. It is applicable to seals for joints in new concrete highways as well as to maintenance work on such highways. It does not cover the design or dimensions of seals, but
20、 general requirements for finished seals are given. NOTE This International Standard is based on experience with chloroprene (CR) rubber and ethylene-propylene- diene monomer (EPDM) rubber. 2 Normative references The following referenced documents are indispensable for the application of this docume
21、nt. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties ISO 48:2010, Rubber, vulcanized or thermop
22、lastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 815-1:2008, Rubber, vulcanized or thermoplastic Determination of compression set Part 1: At ambient or elevated temperatures ISO 815-
23、2:2008, Rubber, vulcanized or thermoplastic Determination of compression set Part 2: At low temperatures ISO 1431-1, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Static and dynamic strain testing ISO 1817, Rubber, vulcanized Determination of the effect of liquids ISO 2230
24、, Rubber products Guidelines for storage ISO 2285, Rubber, vulcanized or thermoplastic Determination of tension set under constant elongation, and of tension set, elongation and creep under constant tensile load ISO 3302-1:1996, Rubber Tolerances for products Part 1: Dimensional tolerances ISO 4635:
25、2011(E) 2 ISO 2011 All rights reservedISO 3384:2005 1) , Rubber, vulcanized or thermoplastic Determination of stress relaxation in compression at ambient and at elevated temperatures ISO 3387, Rubber Determination of crystallization effects by hardness measurements ISO 5893, Rubber and plastics test
26、 equipment Tensile, flexural and compression types (constant rate of traverse) Specification ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods 3 Terms and definitions For the purposes of this document, the following terms and definitions apply.
27、 3.1 joint vertical discontinuity between the adjacent faces of paving slabs in a concrete highway, formed for the purpose of providing some movement capability 3.2 joint chamber cut made in the upper part of the joint to offer a seating for a preformed joint seal NOTE The width of the chamber depen
28、ds on the movement capability required of the preformed joint seal. The bottom of the chamber supports the preformed joint seal, enabling it to withstand the vertical forces caused by traffic. 3.3 preformed joint seal extruded (preformed) and vulcanized elastic rubber profile that, when inserted by
29、special machines into the joint chamber, is compressed by the adjacent surfaces of the paving slabs, thus filling the joint and preventing the ingress of water NOTE A fibre reinforcement can be incorporated in the preformed joint seal as additional protection against over- extension. 3.4 internation
30、al rubber hardness degree IRHD measure of hardness, the magnitude of which is derived from the depth of penetration of a specified indentor into a test piece under specified conditions NOTE 1 The reaction forces produced by compressed preformed joint seals depend on the geometry and hardness of the
31、seal. The higher the IRHD value, the higher the reaction force. The lower the IRHD value, the better the lips of the rubber profile grip the surfaces of the joint chamber. NOTE 2 ISO 48 specifies a method of measuring hardness in terms of IRHD values. 4 Classification The hardness of materials for p
32、reformed joint seals shall be divided into five classes, as given in Table 1. Table 1 Hardness classification Hardness class 40 50 60 70 80 Range of IRHD 35 but u 45 45 but u 55 55 but u 65 65 but u 75 75 but u 85 1) Under revision as ISO 3384-1. ISO 4635:2011(E) ISO 2011 All rights reserved 35 Test
33、 pieces and temperature of test 5.1 Unless otherwise specified, the test pieces shall be cut from the finished product by the method specified in ISO 23529. If the test pieces specified in a particular test method cannot be prepared from the finished seals, they shall be taken from moulded test slab
34、s of suitable dimensions, made from the same batch of material as used for the seal, and vulcanized under conditions which are comparable with the conditions used in production. 5.2 Unless otherwise specified, the test shall be carried out at a standard laboratory temperature in accordance with ISO
35、23529. 6 Requirements 6.1 General 6.1.1 The seal materials shall be made from an ozone-resistant rubber (see 6.11) and shall not depend for ozone resistance solely on surface protection, as this can be removed by abrasion, detergents or other means. 6.1.2 The material shall be black. 6.2 Dimensional
36、 tolerances The dimensions shall be determined in accordance with ISO 3302-1 and the result shall conform to class E1 or E2 as defined in ISO 3302-1:1996. 6.3 Imperfections and defects Imperfections and defects shall be determined by visual inspection. The surfaces of preformed seals shall be free o
37、f surface defects or irregularities, as these can affect their proper functioning. 6.4 Hardness 6.4.1 The hardness shall be determined in accordance with ISO 48:2010, method M. The result shall conform to the relevant value given in Table 2, line 1.1. 6.4.2 In addition, make five measurements at poi
38、nts distributed at random over a 5 m length of the preformed joint seal. The difference between the minimum and the maximum hardness shall not be more than 5 IRHD. Each value shall be within the range specified for the relevant hardness class (see Table 2, line 1.2). 6.5 Tensile strength and elongat
39、ion at break 6.5.1 These tests shall be carried out on test pieces from the product, with the textile material removed, using the technique specified in ISO 23529, where appropriate. 6.5.2 The tensile strength and elongation at break shall be determined in accordance with ISO 37, preferably using a
40、type 2 dumb-bell test piece. The tensile strength and the elongation at break shall conform to the relevant values given in Table 2, lines 2 and 3. ISO 4635:2011(E) 4 ISO 2011 All rights reservedTable 2 Requirements for preformed joint seals Requirements for hardness classes Line No. Property Unit S
41、ub- clause 40 50 60 70 80 1.1 Hardness IRHD 6.4 35 but u 45 45 but u 55 55 but u 65 65 but u 75 75 but u 85 1.2 Hardness tolerance IRHD 6.4 u 5 2 Tensile strength MPa 6.5 W 9 3 Elongation at break % 6.5 W 400 W 375 W 300 W 200 W 125 4 Compression set, 2 0 22 +h 6.6 at +70 C 6.6.2 u 20 at 25 C % 6.6.
42、3 u 60 5 Accelerated ageing in air, 2 0 72 +h at 100 C 6.7 change in hardness, max. limits IRHD 5 change in tensile strength, max. limits % 20/ +40 change in elongation at break, max. limits % 30/ +10 40/ +10 6 Stress relaxation in compression, 100 days at 50 C % 6.8 50 55 7 Recovery at low and elev
43、ated temperatures 6.9 at 25 C aW 65 at +70 C % W 80 8 Hardness increase after 2 0 168 +h at 10 C aIRHD 6.10 +15 max. +10 max. 9 Ozone resistance 6.11 No cracking 10 Effect of water (volume change after 2 0 168 +h) % 6.12 0/ +5 11 Protection against over-extension 6.13 elongation at which fibre first
44、 starts to act % u 2 elongation at 300 N tensile force % u 2 tensile force at which fibre breaks N W 300 12 Functional testing for cold climates; minimum compressive force kN/m 6.14 W 0,03 aThese low-temperature tests are optional in the case of usage in tropical countries. 6.6 Compression set in ai
45、r 6.6.1 General If the test piece is taken from a seal, the measurement shall be carried out as far as possible in the direction of compression of the seal in service. 6.6.2 Compression set at elevated temperature 6.6.2.1 The compression set after 2 0 22 + h at 70 C shall be determined in accordance
46、 with ISO 815-1:2008 using a type B test piece. Where, however, the cross section is too small to allow type B test pieces to be taken from the product, the tension set at constant elongation shall be determined using the method specified in ISO 2285 at a strain of 50 %. The same length of time and
47、the same temperature shall be used as for compression set. ISO 4635:2011(E) ISO 2011 All rights reserved 56.6.2.2 The compression set at 70 C shall conform to the relevant value given in Table 2, line 4. If the tension set is determined, it shall meet the same requirement. 6.6.3 Compression set at l
48、ow temperature 6.6.3.1 The compression set after 2 0 22 +h at low temperature ( 25 C) shall be determined in accordance with ISO 815-1:2008 using a type B test piece. Where, however, the cross section is too small to allow type B test pieces to be taken from the product, the tension set at constant
49、elongation shall be determined using the method specified in ISO 2285 at a strain of 50 %. The same length of time and the same temperature shall be used as for compression set. 6.6.3.2 The compression set at 25 C shall conform to the relevant value given in Table 2, line 4. If the tension set is determined, it shall meet the same requirement. 6.7 Accelerated ageing in air After ageing the test pieces in air for 2 0 72 +h at 100 C by the m
