1、August 2009DEUTSCHE NORM English price group 9No part of this standard 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!$Y9 Pr
2、fverfahren und Anforderungen fr die Bindemittel. iesAmendments This standard differs from DIN EN 15326:2007-06 as follows: a) Subclauses 7.3 and 7.4 have been modified on the basis of Amendment A1:2009 to EN 15326:2007. Previous editions DIN 1995: 1929, 1934, 1941-11, 1960x-02 DIN 52004: 1980-12, 19
3、89-06, 1999-04, 2005-08 DIN EN 15326: 2007-06 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15326:2007+A1 May 2009 ICS 75.140; 91.100.50 Supersedes EN 15326:2007English Version Bitumen and bituminous binders Measurement of density and specific gravity Capillary-stoppered pyknometer method B
4、itumes et liants bitumineux Mesure de la masse volumique et de la densit Mthode du pycnomtre bouchon capillaire Bitumen und bitumenhaltige Bindemittel Messung der Dichte und der relativen Dichte Pyknometerverfahren mit Kapillarstopfen This European Standard was approved by CEN on 10 February 2007 an
5、d includes Amendment 1 approved by CEN on 5 April 2009. 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
6、 concerning such national standards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into i
7、ts own language and notified to the CEN Management Centre has the same status as theofficial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lit
8、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009
9、 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15326:2007+A1:2009: EEN 15326:2007+A1:2009 (E) 2 Contents PageForeword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 55 Reagents .56 Apparatus .57 Procedure
10、 .68 Calculations 99 Precision 1010 Report 11Bibliography . 12DIN EN 15326:2009-08 EN 15326:2007+A1:2009 (E) 3 Foreword This document (EN 15326:2007+A1:2009) has been prepared by Technical Committee CEN/TC 336 “Bituminous binders”, the secretariat of which is held by AFNOR. This European Standard sh
11、all be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2009, and conflicting national standards shall be withdrawn at the latest by November 2009. This document includes Amendment 1 approved by CEN on 2009-04-05. This d
12、ocument supersedes EN 15326:2007. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Au
13、stria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. DIN EN 1532
14、6:2009-08 EN 15326:2007+A1:2009 (E) 4 1 Scope This European standard specifies a procedure for determining the specific gravity and density of bituminous binders at (25,0 0,2) C using the capillary-stoppered pyknometer method. Emulsions are excluded from the scope of this method. NOTE 1 This method
15、can also be used for other hydrocarbon binders, for bituminous binders from other sources, e.g. recovered from asphalt or after hardening and for bituminous binders containing filler. However, a lower precision is to be expected. NOTE 2 This test method may be performed at other temperatures (i.e. 1
16、5 C). When doing so, the density values of water and isopropanol should be determined. The pyknometer method shall be used as a reference method for determining the specific gravity and density of bituminous binders. WARNING Use of this standard may involve hazardous materials, operations and equipm
17、ent. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 2 Normative references
18、 The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 58, Bitumen and bituminous binders Sampling b
19、ituminous binders EN 1427, Bitumen and bituminous binders Determination of the softening point Ring and Ball method EN 12594, Bitumen and bituminous binders Preparation of test samples 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 density (
20、) mass per unit of volume of a material, measured in unit of kg/m3NOTE 1 Standard temperature for determining the density of bituminous binders is (25,0 0,2) C. Density, , is calculated from specific gravity, d, of the bituminous binder. NOTE 2 Density is used for converting volumes to mass as requi
21、red by other standards, applications and in sale transactions. 3.2 specific gravity (d) ratio of density of the bituminous binder, , and density of a test liquid, T, measured under the same conditions, at 25,0 C Td=25/25(1) DIN EN 15326:2009-08 EN 15326:2007+A1:2009 (E) 5 4 Principle Masses of equal
22、 volumes of bituminous sample and of test liquid are compared. Equal volumes are ensured by the pyknometer being filled so as to overflow when placed in a bath at the test temperature until thermal equilibrium is reached (approximately 30 min). The calibrated pyknometer is filled approximately three
23、 quarters of its capacity with the bituminous binder to be tested and weighed with the stopper. The pyknometer is filled with a test liquid and weighed again. From the different masses, specific gravity and density shall be calculated. 5 Reagents 5.1 Test liquids Freshly boiled and cooled distilled
24、water or deionized water shall be used to fill the pyknometer, the low-form beaker (6.6) and the waterbath. For testing petroleum cut-back and fluxed bitumen for which specific gravity at 25 C is assumed to be lower than 1, isopropanol (propan-2-ol) with a density of (782,7 0,1 ) kg/m3at 25 C shall
25、be used. 5.2 Solvents Appropriate solvents are required to clean the equipment used. 6 Apparatus 6.1 Pyknometer Glass, consisting of a conical or cylindrical vessel carefully ground to receive an accurately fitting glass stopper. The stoppered pyknometer shall have a capacity of (25 2) cm3, and shal
26、l weigh not more than 40 g. The wide-mouth (Hubbard) form of pyknometer may be used as detailed in ISO 3507. In case larger samples are available, a larger Hubard pyknometer with a 50 ml capacity may be used also detailed in ISO 3507; masses should be determined with the same accuracy. The upper par
27、t of the stopper shall be smooth and perfectly flat. Its lower part shall be concave to allow air bubbles to easily escape through the opening. The concave part shall have a height of (5 1) mm in the middle. An example of suitable pyknometer is illustrated in Figure 1. DIN EN 15326:2009-08 EN 15326:
28、2007+A1:2009 (E) 6 Dimensions in millimetres Figure 1 Example of a capillary-stoppered pyknometer 6.2 Constant-temperature water bath, having a depth greater than that of the pyknometer, capable of being maintained within ( 0,2) C of the desired temperature. 6.3 Bath thermometer Thermometer shall be
29、 readable to ( 0,1) C and shall be linked to the agreed reference standards. 6.4 Balance Laboratory balance capable to reach the required precision. 6.5 Appropriate oven For temperatures up to 220 C, in order to melt any kind of bituminous binder. The appropriate temperature shall be adapted to the
30、type of binder tested. 6.6 Low-form beaker Capacity of 600 ml is convenient. 7 Procedure 7.1 General Samples shall be taken and prepared according to EN 58 and EN 12594. DIN EN 15326:2009-08 EN 15326:2007+A1:2009 (E) 7 7.2 Preparation of equipment 7.2.1 Preparation of the water bath Fill the water b
31、ath with distilled water or deionized water and maintain the temperature of the water bath within (25 0,2) C. 7.2.2 Conditioning of the low form beaker Partially fill the 600 ml low-form beaker (6.6) with freshly boiled and cooled distilled or deionized water to a level that will allow the pyknomete
32、r to be immersed to a depth of not less than approximately 40 mm. Partially immerse the beaker in the water bath to a depth sufficient to allow the bottom of the beaker to be immersed to a depth of not less than approximately 100 mm, while the top of the beaker is above the water level of the bath.
33、Clamp the beaker in place for approximately 30 min. 7.3 !Calibration of the pyknometer 7.3.1 General The calibration shall be carried out at least once a year in accordance with the procedure detailed below. Such a calibration is valid only for the temperature at which it is carried out. In this sta
34、ndard, except if mentioned explicitly, the reference to the pyknometer specifies the pyknometer body and its stopper. During the year or in case of doubt about any result, a new determination of the mass of the empty pyknometer and the mass of the pyknometer filled with the test liquid shall be carr
35、ied out. The calibrated pyknometers shall be preserved from dust and from stains. When first using a new pyknometer, register the pyknometer body and its stopper with a permanent readable marking that may not change the mass of the pyknometer through time (typically engraved glass). Mention clearly
36、that the pyknometer body and its stopper are not dissociable. 7.3.2 Calibrations of the mass of the empty pyknometer and the mass of the pyknometer filled with the test liquid 7.3.2.1 Determination of the mass of the empty pyknometer and the mass of the pyknometer with the test liquid by 2 operators
37、 When evaluating the mass of the empty pyknometer (A) and the mass of the pyknometer filled with the test liquid (B), the measurements shall be carried out by at least 2 operators, if possible on the same day. If only one operator carries out the 2 determinations, i.e. the determinations of the mass
38、 of the empty pyknometer (A) and the mass of the pyknometer filled with the test liquid (B), each of those two determinations shall carried out twice within at least 24 h in between but no more than 72 h. 7.3.2.2 Calibration of the mass of the empty pyknometer (A) Thoroughly clean the pyknometer wit
39、h solvent and remove the solvent completely by storing the pyknometer in an oven at approximately 10 C above the boiling point of the solvent used. Allow the pyknometer to cool to ambient temperature (18 C to 28 C) and clean it with care to prevent electrostatic charge. Weigh the pyknometer to the n
40、earest mg without handling it with fingers but with grippers. Designate this mass as A. DIN EN 15326:2009-08 EN 15326:2007+A1:2009 (E) 8 7.3.2.3 Referencing the pyknometer and its empty mass (A) Report in the appropriate document, the pyknometer identification mark (see 7.3.1) and its empty mass (A)
41、, as the average of the independent results determined by one or two operators. This mass evaluated at least once a year, will be considered for the determination of the specific gravity or the density as detailed in this standard under Clause 8. 7.3.2.4 Calibration of the mass of the pyknometer fil
42、led with the test liquid (B) Fill the pyknometer with the test-liquid at close to 25 C, place the stopper on loosely. Place the pyknometer in the low-form beaker (7.2.2) and press the stopper firmly in place. If the test liquid is water, the water surface shall overflow the capillary stopper of the
43、pyknometer; if the test liquid is isopropanol the water surface shall be in the middle of the capillary stopper. Allow the pyknometer to remain in the beaker for not less than 30 min. Remove the pyknometer from the bath, immediately dry the top of the stopper with one stroke of a dry towel and then
44、quickly dry the remaining outside area of the pyknometer. The top of the stopper shall not be re-dried even if a small droplet of water forms when removing the pyknometer from the beaker, the proper mass of the contents at the test temperature is thus recorded. If moisture condenses on the pyknomete
45、r during weighing, quickly redry the outside of the pyknometer (excluding the top) before recording the mass. Weigh to the nearest mg. Designate the mass of the pyknometer plus test liquid as B. Empty the pyknometer and dry it in the oven at (110 5) C. 7.3.2.5 Referencing the pyknometer and its mass
46、 determined with the test liquid (B) Report in an appropriate document, the pyknometer identification mark and its mass determined with the test liquid (B), as the average of the independent results determined by one or two operators. This mass evaluated at least once a year, will be considered for
47、the determination of the specific gravity or the density as detailed in this standard under Clause 8.“ 7.4 !Performing the routine test 7.4.1 Determination of the empty mass of the pyknometer Before any determination of the specific gravity or the density of a bituminous binder, the empty pyknometer
48、 shall be weighed and its mass shall be compared to the mass (A) determined when calibrating (see 7.3.2.2 and 7.3.2.3). In case those 2 masses are in no way different from more than 5 mg, the masses (A) and (B) evaluated when calibrating the pynometer shall be used for the calculations detailed unde
49、r Clause 8. On the contrary, a new calibration shall be performed as detailed under sub-clause 7.3. 7.4.2 Weighing of the pyknometer filled with bituminous binder sample Pour enough sample into the clean, dry, warmed pyknometer (within the range 50 C to 80 C) to fill three quarters of its capacity. Take precautions to keep the material from touching the sides of the pyknometer above the final level and to prevent the inclusion of air bubbles. Except when testing fluxed o
