1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI British Standards WB9423_BSI_StandardColCov_noK_AW:BSI FRONT COVERS 5/9/08 12:55 Page 1 PD 6689:2009 PUBLISHED DOCUMENT Surface treatments Guidance on the use of BS EN 12271 and BS EN 12273 This pu
2、blication is not to be regarded as a British Standard. PD 6689:2009 PUBLISHED DOCUMENT Publishing and copyright information The BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2009 ISBN 978 0 580 65636 1 ICS 93.080.20 The following BSI reference relat
3、es to the work on this standard: Committee reference: B/510 Publication history First published December 2006 Second (present) edition May 2009 Amendments issued since publication Date Text affected BSI 2009 i PD 6689:2009 PUBLISHED DOCUMENTContents Foreword ii 0 Introduction 1 1 Scope 2 2 Normative
4、 references 2 3 Terms and definitions 3 4 Overview 4 5 Requirements of BS EN 12271 and BS EN 12273 5 6 Factory production control 12 7 Type approval installation trial (TAIT) 14 Annexes Annex A (informative) Examples of specification surface dressing 16 Annex B (informative) Examples of specificatio
5、n slurry surfacing and microsurfacing 17 Bibliography 18 List of figures Figure A.1 Surface dressing example specifications 16 Figure B.1 Slurry surfacing and microsurfacing example specifications 17 List of tables Table 1 Traditional binder class names 6 Table 2 Traffic categories 7 Table 3 Surface
6、 dressing tolerance and accuracy of rate of spread of binder and chippings 8 Table 4 Surface dressing categories for defects determined by visual assessment 9 Table 5 Surface dressing recommended minimum macrotexture levels at the end of the guarantee period 9 Table 6 Slurry surfacing and microsurfa
7、cing recommended minimum macrotexture levels 11 Table 7 Slurry surfacing and microsurfacing categories for defects determined by visual assessment 12 Table 8 Surface dressing frequencies of test for binder and chipping application 13 Table 9 Slurry surfacing and microsurfacing frequencies of testing
8、 all road types 14 Table 10 Surface dressing example of family of TAITs 15 Table 11 Slurry surfacing and microsurfacing example of family of TAITs 15 Summary of pages This document comprises a front cover, an inside front cover, pages i to ii, pages 1 to 18, an inside back cover and a back cover.PD
9、6689:2009 ii BSI 2009 PUBLISHED DOCUMENTForeword Publishing information This Published Document is published by BSI and came into effect on 31 May 2009. It was prepared by Technical Committee B/510, Road materials. A list of organizations represented on this committee can be obtained on request to i
10、ts secretary. Supersession This Published Document supersedes PD 6689:2006, which is withdrawn. Relationship with other publications This Published Document provides guidance on the use of BS EN 12271 and BS EN 12273 which were implemented in the UK in January 2008. Presentational conventions The pr
11、ovisions of this Published Document are presented in roman (i.e. upright) type. Its recommendations are expressed in sentences in which the principal auxiliary verb is “should”. Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a no
12、rmative element. Contractual and legal considerations This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a Published Document cannot confer immunity from legal obligations. BSI 2009 1 PD 6689:200
13、9 PUBLISHED DOCUMENT0 Introduction0.1 BS EN 12271 Surface dressing BS EN 12271 specifies a range of categories for properties of surface dressing to enable users to select appropriate limiting values for a wide range of uses within Europe. The specifier needs to define BS EN 12271 categories for pro
14、perties relevant to the particular end-use of the surface dressing. Some example specifications for different end-uses are given in Annex A. BS EN 12271 covers surface dressing specified by performance of the finished product. It does not cover surface dressing works carried out to the purchasers de
15、sign, commonly called a recipe specification. This type of specification can continue to be used, but purchasers are responsible for the performance of the surface dressing provided that the works have been executed correctly. Performance categories set out in BS EN 12271 should not be included as p
16、art of a recipe specification as this might result in the recipe being correctly placed, but the performance categories not being met. NOTE The body responsible for the design is responsible for the performance of the surface dressing (provided that the works have been correctly executed).0.2 BS EN
17、12273 Slurry surfacing and microsurfacing BS EN 12273 specifies a range of categories for properties of slurry surfacing and microsurfacing to enable users to select appropriate limiting values for a wide range of uses within Europe. Specifiers need to define BS EN 12273 categories for properties re
18、levant to the particular end-use of the slurry surfacing and microsurfacing. Some example specifications for different end-uses are given in Annex B.PD 6689:2009 2 BSI 2009 PUBLISHED DOCUMENT1 Scope This Published Document gives guidance on the use of BS EN 12271 and BS EN 12273 in the United Kingdo
19、m. BS EN 12271 specifies the properties of surface dressing whilst BS EN 12273 specifies the properties of slurry surfacing and microsurfacing. This Published Document gives guidance on the performance requirements and control procedures for the installation of both surface treatments as products fo
20、r the maintenance of roads and other trafficked areas. The Published Document does not apply to the following: surface dressings designed by the purchaser; i.e. the recipe approach for which the contractor is instructed as to the rates of spread, chipping size, etc., and therefore is not responsible
21、 for performance requirements; surface treatments in tunnels where fire regulations apply; small areas under 500 m 2which are not contiguous, such as patch repair; airfield pavements covered by international regulations (e.g. International Civil Aviation Organization regulations). NOTE In BS EN 1227
22、1 “other trafficked areas” include footways and cycleways.2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the cited applies. For undated references, the latest edition of the referenced document (including a
23、ny amendments) applies. BS 434-2, Bitumen road emulsions Part 2: Code of practice for the use of cationic bitumen emulsions on roads and other paved areas BS EN 12271:2006, Surface dressing Requirements BS EN 12272-1, Surface dressing Test methods Part 1: Rate of spread and accuracy of spread of bin
24、der and chippings BS EN 12272-2:2003, Surface dressing Test methods Part 2: Visual assessment of defects BS EN 12273:2008, Slurry surfacing Requirements BS EN 12274-2, Slurry surfacing Test methods Part 2: Determination of residual binder content BS EN 12274-8, Slurry surfacing Test methods Part 8:
25、Visual assessment of defects BS EN 13036-1, Road and airfield surface characteristics Test methods Part 1: Measurement of pavement surface macrotexture depth using a volumetric patch technique BS EN 13043, Aggregates for bituminous mixtures and surface treatments for roads, airfields and other traff
26、icked areas BS EN 13588 (BS 2000-522), Bitumen and bituminous binders Determination of cohesion of bituminous binders with pendulum test BSI 2009 3 PD 6689:2009 PUBLISHED DOCUMENT BS EN 13808:2005, Bitumen and bituminous binders Framework for specifying cationic bituminous emulsions prEN 15322, Bitu
27、men and bituminous binders Framework for specifying cut-back and fluxed bituminous binders BS EN ISO 11819-1, Acoustics Measurement of the influence of road surfaces on traffic noise Part 1: Statistical pass-by method PD 6682-2:2009, Aggregates Part 2: Aggregates for bituminous mixtures and surface
28、treatments for roads, airfields and other trafficked areas Guidance on the use of BS EN 130433 Terms and definitions For the purposes of this Published Document, the terms and definitions given in BS EN 12271 and BS EN 12273 and the following apply.3.1 producer organization or entity responsible for
29、 the design and construction of the surface treatment NOTE The producer is often called the “contractor” in the UK.3.2 product surface dressing or slurry surfacing and microsurfacing NOTE Microsurfacing is sometimes known as microasphalt. “Slurry seal” is a term no longer used.3.3 purchaser organiza
30、tion or person buying the product NOTE The purchaser is sometimes known as the “overseeing organization” in the UK and this might be a local highway authority.3.4 road type (UK)/road grade method used to link the frequency of testing to the different categories of road NOTE 1 In this Published Docum
31、ent road grades have been defined by reference to the Highways Authorities and Utilities Committees (HAUC) New Roads and Street Works Act 1991 “Road Type” 1. See also Road Note 39 2 for a link to surface dressing traffic categories. For clarity the term “road type” is used throughout this document i
32、nstead of “road grade”. NOTE 2 In Northern Ireland, for HAUC see The Street Works (Northern Ireland) Order 1995 3. NOTE 3 Although the road type has been defined in terms of the HAUC New Roads and Street Works Act 1991 1 it is always preferable to use actual traffic counts where these are available.
33、3.5 specifier organization or person specifying the product who might or might not be directly employed by the purchaser or the contractor3.6 supplier organization or entity providing the constituent materials to the producer NOTE The supplier can also provide the binder and the aggregate and any ot
34、her minor constituent that might be incorporated into the product.PD 6689:2009 4 BSI 2009 PUBLISHED DOCUMENT4 Overview4.1 General BS EN 12271 covers all varieties of surface dressing including single, racked-in, double and sandwich types. It also covers more complex surface dressings, such as two la
35、yers of binder plus three layers of chippings and inverted surface dressing, in which a single surface dressing is followed immediately by, for example, a racked-in surface dressing. BS EN 12273 covers all varieties of slurry surfacing including microsurfacing, as defined in the National Foreword. B
36、oth BS EN 12271 and BS EN 12273 are based on product performance categories, although the purchaser might have some limited control on components, such as minimum requirements for peak binder cohesion and maximum chipping size. It is recommended that the purchaser relies on the defined categories an
37、d the type approval installation trial (TAIT) which demonstrates the producers ability to design and install a product for a given road type. Essential guidance on the use of these performance specifications and the influence of their constituents is published and regularly updated in the following:
38、 TRL Road Note 39 (RN 39) 2; Manual of Contract Documents for Highway Works Volume 1 Series 900 Clause 922 and Clause 918, Volume 2 Clause NG 922 and Clause NG 918 4; Road Surface Treatments Association Codes of Practice 5.4.2 BS EN 12271 Surface dressing The main performance categories used in BS E
39、N 12271 are: a) visual assessment at the end of the guarantee period with different performance categories; b) macrotexture; c) tolerance on rates of spread of binders and chippings; and d) accuracy of rates of spread of binders and chippings (a measure of evenness). Other performance factors that c
40、an be specified are: polished stone value (PSV) of chippings; and aggregate abrasion value (AAV) of chippings.4.3 BS EN 12273 Slurry surfacing and microsurfacing The main performance categories used in BS EN 12273 are: a) visual assessment at the end of the guarantee period with different performanc
41、e categories; and b) macrotexture. BSI 2009 5 PD 6689:2009 PUBLISHED DOCUMENT5 Requirements of BS EN 12271 and BS EN 122735.1 Constituent materials5.1.1 Binders Only constituent materials with established suitability can be used in surface dressing. Suitability may be established by means of conform
42、ity to a European Standard or a European Technical Approval, or based on a history of producing surface treatments conforming to the harmonized standard. Unmodified binders should conform to a current European Standard for bituminous binders; the most commonly used is the European Standard for bitum
43、inous emulsions, BS EN 13808. The standard covering cut-back and fluxed binders is currently still under development within CEN, prEN 15322 1 . However, in the UK cut-back, binders have been replaced by bitumen emulsion and are no longer generally available. Polymer modified binders are proprietary
44、materials, for which the Specification for Highway Works (SHW), Clauses 919 and 922 4, require that the binders have certificates from the British Board of Agrment Highway Authorities Product Approval Scheme (BBA/HAPAS) 2(see also BS 434-2). BS EN 13808 and prEN 15322 include a table of classes for
45、Vialit pendulum cohesion of modified binders (for the test method, see BS EN 13588). Although two other bituminous binder standards (BS EN 12591 and BS EN 14023) do not include it, BS EN 12271 covers the mandated characteristic cohesion by cross-reference to the classes in BS EN 13808. It is recomme
46、nded that purchasers limit any requirements for binders to a minimum cohesion class. However, producers may require additional information to ensure that their designs are valid on a continuing basis. The requirements in the SHW Series NG 700 (see NG Sample Appendix 7/3 and 7/7 binder data sheets) 4
47、 include the recording of rheological data and ageing information. Their data may be passed to the purchaser for information to further demonstrate adequacy of binder performance over the short, medium and particularly the long term. Guidance on the selection of appropriate binders is given in: a) t
48、he TRL Design Guide RN 39 2 for surface dressing; b) the RSTA Design Guide for slurry surfacing and microsurfacing 5; and c) the Design Manual for Roads and Bridges Volume 7 HD 37 (DMRB, 7.5.2) 6 for surface dressing and slurry surfacing and microsurfacing. The classes of cohesion given in the Europ
49、ean binder standards have traditional names in the UK, and these are given in Table 1. 1)In preparation. To be published by CEN as EN 15322 and in the UK as BS EN 15322. 2)For further information on BBA/HAPAS contact BBA at www.bbacerts.co.uk.PD 6689:2009 6 BSI 2009 PUBLISHED DOCUMENTTable 1 Traditional binder class names Traditional UK name Minimum peak cohesion J/cm 2 Binder class Unmodified 0.7 3 A) Intermedia
