1、BRITISH STANDARDBS EN 1744-4:2005Tests for chemical properties of aggregates Part 4: Determination of susceptibility of fillers for bituminous mixturesThe European Standard EN 1744-4:2005 has the status of a British StandardICS 91.100.15g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44
2、g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 1744-4:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 September 2005 BSI 29 September 2005I
3、SBN 0 580 46618 3National forewordThis British Standard is the official English language version of EN 1744-4:2005.The UK participation in its preparation was entrusted by Technical Committee B/502, Aggregates, to Subcommittee B/502/6, Test methods, which has the responsibility to:A list of organiza
4、tions represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspon
5、dence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of its
6、elf confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and prom
7、ulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comme
8、ntsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1744-4August 2005ICS 91.100.15English versionTests for chemical properties of aggregates - Part 4:Determination of water susceptibility of fillers for bituminousmixturesEssais pour dterminer les proprits chimiques desgranulats - Partie 4 : Dtermin
9、ation de la sensibilit leaudes fillers pour mlanges bitumeuxPrfverfahren fr chemische Eigenschaften vonGesteinskrnungen - Teil 4: Bestimmung derWasserempfindlichkeit von Fllern in bitumenhaltigenMischungenThis European Standard was approved by CEN on 27 June 2005.CEN members are bound to comply with
10、 the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat
11、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 its own language and notified to the Central Secretariat has the same status as the officialversio
12、ns.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerlan
13、d and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1744-4
14、:2005: EEN 1744-4:2005 (E) 2 Contents page Foreword 3 1 Scope. 4 2 Normative references. 4 3 Terms and definitions 5 4 Principle 5 5 Separation of filler from a bitumen filler mixture .6 5.1 Reagents . 6 5.2 Apparatus 6 5.3 Sampling . 8 5.4 Preparation of test portions. 8 5.5 Procedure 8 5.6 Calcula
15、tion and expression of results 9 5.7 Test report. 9 Annex A (normative) Determination of the volume increase and loss of stability of a Marshall specimen . 10 A.1 General 10 A.2 Principle 10 A.3 Materials 10 A.4 Apparatus 10 A.5 Sampling . 11 A.6 Preparation of Marshall specimens 11 A.7 Procedure 12
16、 A.8 Calculation and expression of results 12 A.9 Test report. 13 A.10 Precision . 13 Bibliography 15 EN 1744-4:2005 (E) 3 Foreword This European Standard (EN 1744-4:2005) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by BSI. This European Standar
17、d shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2006, and conflicting national standards shall be withdrawn at the latest by February 2006. This European Standard forms part of a series of tests for chemical
18、properties of aggregates. Test methods for other properties of aggregates are covered by Parts of the following European Standards: EN 932 Tests for general properties of aggregates EN 933 Tests for geometrical properties of aggregates EN 1097 Tests for mechanical and physical properties of aggregat
19、es EN 1367 Tests for thermal and weathering properties of aggregates EN 13179 Tests for filler aggregate used in bituminous mixtures The other parts of EN 1744 are, or will be: Part 1: Chemical analysis Part 2: Determination of resistance to alkali/aggregate reaction Part 3: Preparation of eluates b
20、y leaching of aggregates Part 5: Determination of acid soluble chloride salts Part 6: Determination of the influence of aggregate extract on the initial setting time of cement According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound
21、 to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
22、 Kingdom. EN 1744-4:2005 (E) 4 1 Scope This European Standard specifies the procedure for the determination of the water susceptibility of fillers for bituminous mixtures, by separation of filler from a bitumen filler mixture. A method for the determination of water susceptibility by volume increase
23、 and loss of stability of a Marshall specimen is described in Annex A. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references the latest edition of the ref
24、erenced document (including any amendments) applies. EN 932-1, Tests for general properties of aggregates Part 1: Methods for sampling EN 932-2, Tests for general properties of aggregates Part 2: Methods for reducing laboratory samples EN 932-5, Tests for general properties of aggregates Part 5: Com
25、mon equipment and calibration EN 933-2, Tests for geometrical properties of aggregates Part 2: Determination of particle size distribution -Test sieves, nominal size of apertures EN 933-3, Tests for geometrical properties of aggregates - Part 3: Determination of particle shape - Flakiness index EN 9
26、33-4, Tests for geometrical properties of aggregates - Part 4: Determination of particle shape - Shape index EN 12697-6, Bituminous mixtures Test methods for hot mix asphalt Part 6: Determination of bulk density of bituminous specimens EN 12697-12, Bituminous mixtures Test methods for hot mix asphal
27、t Part 12: Determination of the water sensitivity of bituminous specimens EN 12697-30, Bituminous mixtures - Test methods for hot mix asphalt - Part 30: Specimen preparation by impact compactor EN 12697-34, Bituminous mixtures Test methods for hot mix asphalt Part 34: Marshall test EN 12697-35, Bitu
28、minous mixtures Test methods for hot mix asphalt Part 35: Laboratory mixing EN 13357, Bitumen and bituminous binders Determination of the efflux time of petroleum cut-back and fluxed bitumens EN 1744-4:2005 (E) 5 3 Terms and definitions For the purposes of this European Standard, the following terms
29、 and definitions apply. 3.1 filler aggregate aggregate, most of which passes a 0,063 mm sieve, which can be added to construction materials to provide certain properties 3.2 water susceptibility of filler measure of the degree of separation which occurs in the presence of water from a filler bitumen
30、 mixture, e.g. as a result of intra-crystalline water inclusion between aggregate particles and binder coating 3.3 subsample sample obtained from sampling increments or a bulk sample by means of a sample reduction procedure 3.4 test portion sample used as a whole in a single test 3.5 aggregate size
31、designation of aggregate in terms of lower (d) and upper (D) sieve sizes expressed as d/D NOTE This designation accepts the presence of some particles which will be retained on the upper sieve (oversize) and some which will pass the lower sieve (undersize). 3.6 particle size fraction fraction of an
32、aggregate passing the larger of two sieves and retained on the smaller NOTE The smaller sieve size can be zero. 3.7 constant mass successive weighings after drying at least 1 h apart not differing by more than 0,1 %, by mass NOTE In many cases constant mass can be achieved after a test portion has b
33、een dried for a pre-determined period in a specified oven at (110 5) C. Test laboratories can determine the time required to achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used. 4 Principle A mixture of filler and bitumen is stirred in hot
34、 water. If filler becomes separated from the mixture (indicated by the turbidity of the water), the filler is recovered on a filter paper and weighed. EN 1744-4:2005 (E) 6 5 Separation of filler from a bitumen filler mixture 5.1 Reagents 5.1.1 Bitumen:50/70. 5.1.2 Redistilled Kerosene (paraffin oil)
35、, petroleum distillate with a boiling range between 190 C and 260 C. NOTE The displacement liquid used in the method of testing density of cement, as specified in EN 196-6, is suitable. 5.1.3 Low viscosity bitumen solution, obtained by dissolution of 50/70 bitumen (5.1.1) in kerosene (5.1.2), with v
36、iscosity at 25 C of (240 10) (St) (60s 5) s S.T.V. (Standard Tar Viscometer) 10 mm) as specified in EN 13357. 5.1.4 Demineralized water. 5.2 Apparatus 5.2.1 All apparatus, unless otherwise stated, shall conform to the general requirements of EN 932-5. 5.2.2 Sampling apparatus. 5.2.3 A balance capabl
37、e of weighing up to 2000 g, accurate to 0,1 g. Other analytical balance capable of weighing with an accuracy of 1 mg. 5.2.4 Glass conical flask, wide-mouthed, 250 ml capacity. 5.2.5 Water bath, capable of maintaining a temperature of (60 1) C. 5.2.6 Motor-driven T-shaped stirrer, capable of maintain
38、ing (25 1) revs/s (see Figure 1). EN 1744-4:2005 (E) 7 All dimensions in millimetres 5 0,25+-3+-50,2520 20+ -10+-30040150,25+ -5 0,25+-403+ -5 0,25+-20205 0,25+-Key 1 Welded steel rods Figure 1 T-shaped stirrer EN 1744-4:2005 (E) 8 5.2.7 Glass beaker, 600 ml capacity. 5.2.8 Spatula. 5.2.9 Desiccator
39、. 5.2.10 Sieve 0,125 mm, complying with EN 933-2. 5.2.11 Well-ventilated oven, capable of maintaining a temperature of (110 5) C. 5.2.12 Graduated measuring cylinder, 100 ml capacity. 5.2.13 Two thermometers, 0 C to 100 C with 1 C sub-divisions. 5.2.14 Stop-watch, or timer, readable to 1 s. 5.2.15 V
40、iscometer NOTE A suitable viscometer is described in EN 12595. 5.2.16 Bchner funnel, 90 mm diameter. 5.2.17 Vacuum flask, with suitable Bchner funnel adapter. 5.2.18 Medium grade filter paper, ashless, for quantitative analysis, of a diameter appropriate to the size of the funnel (5.2.16). 5.3 Sampl
41、ing The laboratory sub-sample shall be taken in accordance with EN 932-1 and reduced in accordance with EN 932-2, to produce a mass of about 50 g. 5.4 Preparation of test portions Dry the reduced mass of filler for 4 h in an oven at a temperature of (110 5) C and cool to room temperature in a desicc
42、ator for at least 90 min. If agglomerates are present in the material, reduce these agglomerates to powder by means of a spatula. Mix the pulverised agglomerates with the rest of the sub-sample and sieve the sub-sample through the 0,125 mm sieve. Remix the material passing the sieve and take (10 0,1
43、) g as the test portion (m0). 5.5 Procedure Place (50,0 0,5) g of low viscosity bitumen solution (5.1.3) into the conical flask and add the test portion of filler to the conical flask. Measure (100 5) ml of demineralized water into the measuring cylinder. Place the conical flask and the measuring cy
44、linder in the water bath until a temperature of (60 1) C has been reached by the contents of both vessels (checking by means of thermometers) and maintain this temperature during the test. Stir the contents of the conical flask mechanically for (300 5) s and then allow the mixture to stand for (300
45、5) s. Pour the water from the measuring cylinder into the conical flask and stir again for (300 5) s. EN 1744-4:2005 (E) 9 Examine the mixture to see if uncoated filler has separated. If not, the filler shall be considered as non susceptible to water. If the filler separates, or in the case of turbi
46、dity of the water, determine the water susceptibility as follows. Allow the conical flask and its contents to cool so that the mixture becomes kneadable. Pour the water and the filler separated from the mixture by kneading in the flask with a spatula and washing with water. Pour the water and the se
47、parated filler into the beaker and repeat the process until the washing with water becomes clear. Weigh a dried filter paper and records its mass (m1). Filter the contents of the beaker through the weighed filter paper in a Bchner funnel to the vacuum flask. Remove the last traces of bitumen by wash
48、ing with kerosene (5.1.2.). Dry the filter and recovered filler in an oven at (110 5) C to constant mass. Weigh the filter paper with the filler to the nearest 1 mg (m2). 5.6 Calculation and expression of results Calculate the water susceptibility (Ws), as a percentage by mass of the filler, in acco
49、rdance with the following equation 21s0100mmWm= (1) Where : mois the mass of the test portion in grams; m1is the mass of the filter paper in grams; m2is the mass of the filter paper and filler in grams. Wsshould be rounded to the nearest 1 % by mass. 5.7 Test report The test result shall be accompanied by an affirmation that the water susceptibility was determined in accordance with this European Standard. The test report shall include the following additional information: a) source, typ
