1、March 2016 English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 75.140; 91.100.50!%MJ“2429939www.d
2、in.deDIN EN 16659Bitumen and bituminous binders Multiple Stress Creep and Recovery Test (MSCRT);English version EN 16659:2015,English translation of DIN EN 16659:2016-03Bitumen und bitumenhaltige Bindemittel MSCR-Prfung (Multiple Stress Creep and Recovery Test);Englische Fassung EN 16659:2015,Englis
3、che bersetzung von DIN EN 16659:2016-03Bitumes et liants bitumineux Essai de fluage-recouvrance sous contraintes rptes (essai MSCR);Version anglaise EN 16659:2015,Traduction anglaise de DIN EN 16659:2016-03www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original
4、shall be considered authoritative.Document comprises 15 pages 03.16 DIN EN 16659:2016-03 2 A comma is used as the decimal marker. National foreword This document (EN 16659:2015) has been prepared by Technical Committee CEN/TC 336 “Bituminous binders” (Secretariat: AFNOR, France). The responsible Ger
5、man bodies involved in its preparation were DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing) and DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Joint Committee NA 062-03-32 GA Bitumen; Prfverfahren und Anforderungen fr die Bindemi
6、ttel. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16659 December 2015 ICS 75.140; 91.100.50 English Version Bitumen and bituminous binders - Multiple Stress Creep and Recovery Test (MSCRT) Bitumes et liants bitumineux - Essai de fluage-recouvrance sous contraintes rptes (essai MSCR) Bitumen
7、 und bitumenhaltige Bindemittel - MSCR-Prfung (Multiple Stress Creep and Recovery Test) This European Standard was approved by CEN on 16 November 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the statu
8、s of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Ger
9、man). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croati
10、a, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnit
11、ed Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN
12、16659:2015 EContent European foreword . 3 1 Scope 4 2 Normative References . 4 3 Terms and definitions . 4 4 Principle . 5 5 Apparatus . 5 5.1 Dynamic Shear Rheometer (DSR) . 5 5.2 Moulds or sheet materials . 5 5.3 Oven . 5 6 Preparation of rheometers 6 6.1 Set up . 6 6.2 Zero gap setting . 6 7 Samp
13、le preparation 6 8 Procedure. 8 8.1 Sample placing onto the rheometer . 8 8.2 Gap setting . 8 8.3 Testing . 8 9 Calculations . 9 10 Expression of Results . 9 11 Precision 10 11.1 General . 10 11.2 Repeatability, r 11 11.3 Reproducibility, R 11 12 Report . 11 DIN EN 16659:2016 03 -EN 16659:2015 (E) 2
14、 European foreword This document (EN 16659:2015) has been prepared by Technical Committee CEN/TC 336 “Bituminous binders”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,
15、 at the latest by June 2016, and conflicting national standards shall be withdrawn at the latest by June 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or
16、 all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic
17、of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16659:2016 03 -EN 16659:2015 (E) 3 1 Scope 1.1 This tes
18、t method covers the determination of percent recovery and non-recoverable creep compliance of bitumen and bituminous binders by means of Multiple Stress Creep and Recovery (MSCR) testing. The MSCR test is conducted using the Dynamic Shear Rheometer (DSR) in creep mode at a specified temperature. 1.2
19、 The percent recovery at multiple stress levels is intended to determine the presence of elastic response and stress dependence of bituminous binders. 1.3 The non-recoverable creep compliance at multiple stress levels is intended as an indicator for the sensitivity to permanent deformation and stres
20、s dependence of bituminous binders. 1.4 This European Standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this European Standard to establish appropriate safety and health practices and determine the applicability
21、of regulatory limitations prior to use. 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
22、referenced document (including any amendments) applies. EN 58, Bitumen and bituminous binders - Sampling bituminous binders EN 12594, Bitumen and bituminous binders - Preparation of test samples EN 12597, Bitumen and bituminous binders - Terminology EN 14770, Bitumen and bituminous binders - Determi
23、nation of complex shear modulus and phase angle - Dynamic Shear Rheometer (DSR) ISO 5725-2:1994, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method 3 Terms and definitio
24、ns For the purposes of this document, the terms and definitions given in EN 12597 and the following apply. 3.1 creep and recovery standard rheological test protocol whereby a specimen is subjected to a constant load for a fixed time period, then allowed to recover, at zero load, for a fixed time per
25、iod 3.2 percent recovery (%R) recovered strain in a specimen during the recovery portion of a cycle, expressed in percent DIN EN 16659:2016 03 -EN 16659:2015 (E) 4 3.3 non-recoverable creep compliance (Jnr) residual strain in a specimen after a creep and recovery cycle divided by the stress applied
26、4 Principle This test method is used to determine the presence of elastic response in bitumen and bituminous binders under shear creep and recovery at two stress levels at a specified temperature. The presence of this elastic response is determined by measuring the percent recovery and non-recoverab
27、le compliance of the binder. Non-recoverable creep compliance has been shown to be an indicator of the resistance of bitumen and bituminous binders to permanent deformation under repeated load. The test shall be conducted at 50 C, 60 C, 70 C or 80 C as appropriate. Other test temperatures may be use
28、d for comparative purposes. Sample preparation and apparatus are in accordance with EN 14770 using the 25 mm parallel plate geometry with a 1 mm gap setting. The sample is loaded at constant stress for 1 s, then allowed to recover for 9 s. Ten creep and recovery cycles are run at 0,100 kPa creep str
29、ess followed by 10 more cycles at 3,200 kPa creep stress (see Figure 1). 5 Apparatus Usual laboratory apparatus and glassware, together with the following: 5.1 Dynamic Shear Rheometer (DSR) With either an integral temperature control system or temperature control attachments, capable of controlling
30、the temperature over a minimum range of 5C to 85C with an accuracy of 0,1 C throughout the test period. The rheometer shall be fitted with parallel plates, with a constant gap across the area of the plates. The temperature control system shall encompass both plates, to avoid temperature gradients ac
31、ross the plates. When the test specimen is immersed in liquid other than water, ensure that the liquid does not affect the properties of the material being analysed. The rheometer shall run in stress controlled mode and be able to collect data samples every 0,1 s. For rheometers using an air bearing
32、, and to avoid damage, the air supply to the bearing should be switched on before the instrument is switched on. When not in use, the spindle should be secured. Where the bottom plate is nominally the same diameter as the top plate, then a visual check should be made to ensure the two plates are ver
33、tically aligned. If there is any doubt as to the alignment of the top and bottom plates, then the manufacturer, or a qualified technician, should re-align the plate geometry. 5.2 Moulds or sheet materials For the preparation of the test specimens, the moulds or sheet material shall be of silicone or
34、 similar material, which does not adhere to the test specimen. The use of greases or other anti-stick products is not allowed because they can affect the adherence of the sample to the rheometer plates. 5.3 Oven Ventilated laboratory model, capable of being controlled at temperatures between 50 C an
35、d 200 C with an accuracy of 5 C. DIN EN 16659:2016 03 -EN 16659:2015 (E) 5 6 Preparation of rheometers 6.1 Set up Set up the rheometer in the sequence given in the manufacturers instructions using 25 mm parallel plates and a 1 mm gap. Carefully prepare the rheometer plates before placing the test sp
36、ecimen, by cleaning with a suitable solvent and soft cleaning cloth or paper. Do not use metal or any other materials, which may damage the surfaces of the plates, and take care not to bend the shaft of the upper plate The rheometer and temperature control system should be calibrated at regular inte
37、rvals in accordance with the quality assurance procedure of the laboratory. A suitable method is that the rheometer and temperature control system are calibrated by a means traceable to a national standard. Also, it is advisable to verify the accuracy of the temperature control system by means of a
38、certified temperature measuring device at regular intervals. Also note that external devices read the accurate temperature value only if they are calibrated correctly. 6.2 Zero gap setting Set the zero gap between the plates prior to loading the test specimen, with both plates at the selected test t
39、emperature. 7 Sample preparation CAUTION This standard involves handling of apparatus and binders at very high temperatures. Always wear protective gloves and eye glasses when handling hot binder, and avoid contact with any exposed skin. Samples shall be taken in accordance with EN 58 and prepared i
40、n accordance with EN 12594. 7.1 Heating procedure for preparation of the binder. The softening point of the binder may be determined by EN 1427 or, if the specification grade of the binder is known, the upper softening point limit may be used. Avoid prolonged heating of the bulk binder sample, and u
41、se the heating periods in EN 12594 as the maximum time prior to withdrawal of (a) sub-sample(s). For very large bulk samples, it is convenient to redistribute the binder in smaller bulk samples, after heating and careful homogenization. Place the sample in the oven maintained at a temperature of 85
42、C 5 C above the softening point of the binder, or at 180 C, whichever is the lower. For polymer modified binders according to EN 14023, the temperature shall be between 180 C and 200 C irrespective of the softening point; the temperature shall not exceed 200 C in any case Binder samples shall not be
43、 reheated more than two times. Reheating times for sub-samples shall conform to following requirements: 50g to 100g: max. 30 min 100g to 500g: max. 1 h 500g to 1 kg: max. 2 h DIN EN 16659:2016 03 -EN 16659:2015 (E) 6 7.2 Heating procedure for preparation of binders from bituminous emulsion or cut-ba
44、ck or fluxed bituminous binders recovered by evaporation and/or subjected to a stabilizing procedure. In order to protect the recovered and/or stabilized binder from excessive damage (due to volatile loss or thermal effects), heating of the recovered and/or stabilized binder shall be strictly contro
45、lled in accordance with EN 12594 and this method. In all cases, heating times shall be kept to a minimum. Binder samples shall not be reheated more than two times. 7.2.1 Residue from emulsion containing a flux free binder For emulsions not categorized as a fluxed emulsion, the binder shall be heated
46、 to a temperature between expected softening point + 80 C and expected softening point + 100C. 7.2.2 Residue from emulsion containing a mineral fluxed binder For emulsions categorized as a fluxed emulsion, the binder shall be heated to a temperature between expected softening point + 60 C and expect
47、ed softening point + 80C. 7.2.3 Residue from emulsion containing a vegetable fluxed binder For emulsions categorized as a fluxed emulsion, the binder shall be heated to a temperature between expected softening point + 80 C and expected softening point + 100C. 7.2.4 Cut-back or fluxed bitumen with mi
48、neral oil For cut-backs or fluxed bitumens where the flux is a mineral oil, the binder shall be heated to a temperature between expected softening point + 60 C and expected softening point + 80C. 7.2.5 Cut-back or fluxed bitumen with vegetable oil For cut-backs or fluxed bitumens where the flux is a vegetable oil, the binder shall be heated to a temperat
