1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12697-28:2001 The E
2、uropean Standard EN 12697-28:2000 has the status of a British Standard ICS 93.080.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Bituminous mixtures Test methods for hot mix asphalt Part 28: Preparation of samples for determining binder content, water content and gradingTh
3、is British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 February 2001 BSI 02-2001 ISBN 0 580 36415 1 BS EN 12697-28:2001 Amendments issued since
4、publication Amd. No. Date Comments National foreword This British Standard is the official English language version of EN 12697-28:2000. The UK participation in its preparation was entrusted by Technical Committee B/510, Road materials, to Subcommittee B/510/1, Coated macadam and hot mix asphalt, wh
5、ich has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK.
6、A list of organizations represented on this subcommittee can be obtained on 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 “Int
7、ernational Standards Correspondence Index”, or by using the “Find” facility of 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
8、a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last iss
9、ued.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12697-28 December 2000 ICS 93.080.20 English version Bituminous mixtures Test methods for hot mix asphalt Part 28: Preparation of samples for determining binder content, water content and grading Mlanges bitumineux Essais pour enrobs chaud Par
10、tie 28: Prparation des nchantillons pour la dtermination de la teneur en liant, de la teneur en eau et de la granularit Asphalt Prfverfahren fr Heiasphalt Teil 28: Vorbereitung von Proben zur Bestimmung des Bindemittelgehaltes, des Wassergehaltes und zur Korngrenbestimmung This European Standard was
11、 approved by CEN on 24 November 2000. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such n
12、ational standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and n
13、otified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland
14、and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12
15、697-28:2000 EPage 2 EN 12697-28:2000 BSI 02-2001 Contents Page Foreword.3 1 Scope5 2 Normative references 5 3 Terms and definitions5 4 Apparatus .6 5 Preparation of laboratory samples of bituminous mixtures .6Page 3 EN 12697-28:2000 BSI 02-2001 Foreword This European Standard has been prepared by Te
16、chnical Committee CEN/TC 227, Road Materials, the Secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2001, and conflicting national standards shall be withdr
17、awn at the latest by August 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Lu
18、xembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom This European Standard is one of a series of standards as listed below: EN 12697-1, Bituminous mixtures Test methods for hot mix asphalt Part 1: Soluble binder content prEN 12697-2:1998, Bituminous mixtures Te
19、st methods for hot mix asphalt Part 2: Particle size distribution EN 12697-3, Bituminous mixtures Test methods for hot mix asphalt Part 3: Binder recovery: Rotary evaporator EN 12697-4, Bituminous mixtures Test methods for hot mix asphalt Part 4: Binder recovery: Fractionating column prEN 12697-5:19
20、96, Bituminous mixtures Test methods for hot mix asphalt Part 5: Determination of the maximum density prEN 12697-6:1996, Bituminous mixtures Test methods for hot mix asphalt Part 6: Determination of bulk density of bituminous specimen by hydro-static method prEN 12697-7:1996, Bituminous mixtures Tes
21、t methods for hot mix asphalt Part 7: Determination of bulk density of bituminous specimens by gamma rays prEN 12697-8:1996, Bituminous mixtures Test methods for hot mix asphalt Part 8: Determination of the air voids content of bituminous materials prEN 12697-9:1997, Bituminous mixtures Test methods
22、 for hot mix asphalt Part 9: Determination of the reference density, gyrator compactor prEN 12697-10:1996, Bituminous mixtures Test methods for hot mix asphalt Part 10: Compactibility prEN 12697-11:1999, Bituminous mixtures Test methods for hot mix asphalt Part 11: Determination of the affinity betw
23、een aggregate and bitumen prEN 12697-12:1999, Bituminous mixtures Test methods for hot mix asphalt Part 12: Determination of the water sensitivity of bituminous specimens EN 12697-13, Bituminous mixtures Test methods for hot mix asphalt Part 13: Temperature measurement EN 12697-14, Bituminous mixtur
24、es Test methods for hot mix asphalt Part 14: Water content prEN 12697-15:1997, Bituminous mixtures Test methods for hot mix asphalt Part 15: Determination of the segregation sensitivity of bituminous mixturesPage 4 EN 12697-28:2000 BSI 02-2001 prEN 12697-16:2000, Bituminous mixtures Test methods for
25、 hot mix asphalt Part 16: Abrasion by studded tyres prEN 12697-17, Bituminous mixtures Test methods for hot mix asphalt Part 17: Particle loss of specimen prEN 12697-18:1997, Bituminous mixtures Test methods for hot mix asphalt Part 18: Binder drainage from porous asphalt prEN 12697-19:2000, Bitumin
26、ous mixtures Test methods for hot mix asphalt Part 19: Permeability of specimen prEN 12697-20:1999, Bituminous mixtures Test methods for hot mix asphalt Part 20: Indentation using cube or Marshall specimens prEN 12697-21:1999, Bituminous mixtures Test methods for hot mix asphalt Part 21: Indentation
27、 using plate specimens prEN 12697-22:1999, Bituminous mixtures Test methods for hot mix asphalt Part 22: Wheel tracking prEN 12697-23:1999, Bituminous mixtures Test methods for hot mix asphalt Part 23: Determination of the indirect tensile strength of bituminous specimens prEN 12697-24:1999, Bitumin
28、ous mixtures Test methods for hot mix asphalt Part 24: Resistance to fatigue prEN 12697-25, Bituminous mixtures Test methods for hot mix asphalt Part 25: Dynamic creep test prEN 12697-26:1999, Bituminous mixtures Test methods for hot mix asphalt Part 26: Stiffness EN 12697-27, Bituminous mixtures Te
29、st methods for hot mix asphalt Part 27: Sampling EN 12697-28, Bituminous mixtures Test methods for hot mix asphalt Part 28: Preparation of samples for determining binder content, water content and grading prEN 12697-29:1996, Bituminous mixtures Test methods for hot mix asphalt Part 29: Determination
30、 of the dimensions of bituminous specimen prEN 12697-30:2000, Bituminous mixtures Test methods for hot mix asphalt Part 30: Specimen preparation, impact compactor prEN 12697-31:2000, Bituminous mixtures Test methods for hot mix asphalt Part 31: Specimen preparation, gyratory compactor prEN 12697-32:
31、1997, Bituminous mixtures Test methods for hot mix asphalt Part 32: Laboratory compaction of bituminous mixtures by a vibratory compactor prEN 12697-33:1999, Bituminous mixtures Test methods for hot mix asphalt Part 33: Specimen preparation, slab compactor prEN 12697-34:1999, Bituminous mixtures Tes
32、t methods for hot mix asphalt Part 34: Marshall test prEN 12697-35, Bituminous mixtures Test methods for hot mix asphalt Part 35: Laboratory mixing prEN 12697-36:1996, Bituminous mixtures Test methods for hot mix asphalt Part 36: Method for the determination of the thickness of a bituminous pavement
33、Page 5 EN 12697-28:2000 BSI 02-2001 prEN 12697-37:1999, Bituminous mixtures Test methods for hot mix asphalt Part 37: Hot sand test for the adhesivity of binder on precoated chippings for HRA prEN 12697-38, Common equipment and calibration The applicability of this European Standard is described in
34、the product standards for bituminous mixtures. No existing European Standard is superseded. 1 Scope This European Standard describes test methods for preparing test portions for the determination of the binder, water content and grading of samples of bituminous mixtures, when the sample submitted to
35、 the laboratory has a mass greater than or equal to four times the test portion. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publicatio
36、ns are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendme
37、nts). EN 58, Sampling bituminous binders. EN 932-1, Tests for general properties of aggregates Part 1: Methods for sampling. prEN 12697-36:1996, Bituminous mixtures Test methods for hot mix asphalt Part 36: Method for the determination of the thickness of a bituminous pavement. 3 Terms and definitio
38、ns For the purposes of this European Standard, the terms and definitions given in EN 58 and the following apply. 3.1 representative sample bulk sample consisting of a specified number of increments purposely taken to represent a specific quantity or area of material NOTE A representative sample is a
39、ssumed to have the same composition as the material sampled, within the limits of precision associated with the method of sampling. 3.2 laboratory sample sample despatched to the laboratory NOTE It may be the whole or part of the bulk or representative sample and should be of sufficient quantity for
40、 all tests required.Page 6 EN 12697-28:2000 BSI 02-2001 3.3 test portion part of the laboratory sample to be used for a specific test procedure to produce a single test result 3.4 test specimen part of the test portion on which a single test is carried out NOTE A number of tests may be necessary to
41、produce a test result. 3.5 test result result obtained by applying the test procedure to a test portion NOTE When the test procedure is required to be carried out on more than one test specimen, the test result will be calculated as the mean result of a number of determinations. 4 Apparatus 4.1 Bala
42、nce 4.2 Ruler 4.3 Circular saw, capable of cutting stone 4.4 Oven, conventional or microwave 4.5 Stopwatch 4.6 Metal tray (optional) 4.7 Sample splitter in accordance with EN 932-1 (such as that shown in Figure 1), optional 4.8 Shovel 4.9 Container 5 Preparation of laboratory samples of bituminous m
43、ixtures 5.1 Preliminary inspection and storage 5.1.1 On receipt of the laboratory sample inspect it and record its condition.Page 7 EN 12697-28:2000 BSI 02-2001 5.1.2 If a slab or a core cut from compacted material is to be stored prior to examination or separation of courses, take care so as to min
44、imize deformation or deterioration of the material. Store slabs on a clean, hard, flat surface, preferably out of direct sunlight, with the final rolled surface at the bottom. NOTE Cores of well compacted materials made with high viscosity binders will normally keep well standing vertically upside d
45、own on a clean bench in a cool room, but cores cut from less stable materials may require refrigeration especially for porous asphalt cores. 5.2 Pre-treatment of laboratory samples taken before and during laying 5.2.1 Binder drainage If any binder drainage has occurred, collect and weigh as much of
46、the drained material as possible and record the details. When the laboratory sample has been reduced to a suitable size for testing, add a proportionate representative weighed fraction of the drained material to the test portion. Record if the drained material can not be collected. 5.2.2 Uncoated ag
47、gregate Record the presence of any uncoated or fractured aggregate but do not remove such aggregate. 5.3 Pre-treatment of laboratory samples taken after laying 5.3.1 General If possible, record the average thickness (or thickness if there is more than one course) in accordance with prEN 12697-36:199
48、6 and the presence of any extraneous material. Remove all extraneous material in accordance with the appropriate clause of this European Standard. If complete removal is not possible, this shall be recorded. NOTE In most cases, total removal can only be effected by sawing. 5.3.2 Coated chippings If
49、possible, remove chippings by hand before starting the tests. If removal is not possible (e.g. due to deep embedment), record this and proceed with the tests. NOTE 1 Coated chippings may normally be removed with a suitable tool after warming the sample. For this purpose a temperature approximately 40 C below the appropriate maximum temperature given in Table 1 is suitable. NOTE 2 It may
