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STANDARD
SIST EN 15326:2007+A1:2009
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE 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
Bitumes et liants bitumineux - Mesure de la masse volumique et de la densité - Méthode du pycnomètre à 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 and 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 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official 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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2009 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: ESIST EN 15326:2007+A1:2009
EN 15326:2007+A1:2009 (E) 2 Contents Page Foreword .31Scope .42Normative references .43Terms and definitions .44Principle .55Reagents .56Apparatus .57Procedure .68Calculations .99Precision . 1010Report . 11Bibliography . 12 SIST EN 15326:2007+A1:2009
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 shall 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 document 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: Austria, 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. SIST EN 15326:2007+A1:2009
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 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. 15 °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 equipment. 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 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 bituminous 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 () mass per unit of volume of a material, measured in unit of kg/m3 NOTE 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 required 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 Tdρρ=25/25 (1) SIST EN 15326:2007+A1:2009
EN 15326:2007+A1:2009 (E) 5 4 Principle Masses of equal 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 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 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/m3 at 25 °C shall 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 shall 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 part 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. SIST EN 15326:2007+A1:2009
EN 15326:2007+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 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 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. SIST EN 15326:2007+A1:2009
EN 15326:2007+A1:2009 (E) 7 7.2 Preparation of e
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