EN 12697-13-2017 en Bituminous mixtures - Test methods - Part 13 Temperature measurement.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Bituminous mixtures - Test methodsPart 13: Temperature measurementBS EN 1269713:2017National forewordThis British Standard is the UK implementation of EN 1269713:2017. It supersedes BS EN 1269713:2000, which is withdraw

2、n.The UK participation in its preparation was entrusted to Technical Committee B/510/1, Asphalt products.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users ar

3、e responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 89543 2ICS 93.080.20; 17.200.10; 91.100.50Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under

4、 the authority of the Standards Policy and Strategy Committee on 31 December 2017.Amendments/corrigenda issued since publicationDate Text affected BRITISH STANDARDBS EN 1269713:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12697-13November 2017ICS 93.080.20 Supersedes EN 1269713:2000EUROPEAN

5、 COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN Ref. No. EN 1269713:2017: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersBituminous

6、 mixtures Test methods Part 13: Temperature measurementMlanges Bitumineux - Mthodes essai - Partie 13: Mesure de la tempratureAsphalt Prfverfahren Teil 13: TemperaturmessungThis European Standard was approved by CEN on 28 August 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regu

7、lations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Uptodate lists and bibliographical references concerning such national standards may be obtained on application to the CENCENELEC Management Centre or to any CEN member.

8、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-CENELEC Management Centre has the same status as the official versions.CEN me

9、mbers are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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, Port

10、ugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 12697-13:2017 (E)European Foreword . 31 Scope . 42 Principle 42.1 General . 42.2 Contact Temperature Measuring Thermometer 42.3 Infraredthermometer 43 Apparatus . 43.1 Contact temperatu

11、re measuring 43.1.1 General 43.1.2 Devices for measuring the temperature of material in a lorry or in a heap . 43.2 Infraredthermometer 44 Procedure. 54.1 Contact Measuring Device . 54.1.1 Conditioning of instrument 54.1.2 Measurement of temperature in a lorry 54.1.3 Measurement material temperature

12、 after it has been laid and before or during rolling 54.1.4 Measurements of temperature in a heap 54.2 Infraredthermometer 64.2.1 General 64.2.2 Comparison measurement 64.2.3 Temperature measurement 65 Test Report 65.1 Mandatory information . 65.2 Optional information . 76 Precision . 72Contents Pag

13、eBS EN 1269713:2017EN 12697-13:2017 (E)European ForewordThis document (EN 12697-13:2017) has been prepared by Technical 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

14、identical text or by endorsement, at the latest by May 2018, and conflicting national standards shall be withdrawn at the latest by May 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for ide

15、ntifying any or all such patent rights.This document supersedes EN 1269713:2000.The following is a list of significant technical changes since the previous edition: A test device for non-contact temperature-measurement (infrared-thermometer) is added, 2.3 Infraredthermometer, 3.2 Infraredthermometer

16、, 4.2 Infraredthermometer.A list of all parts in the EN 12697 series can be found on the CEN website.According to the CENCENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, C

17、yprus, 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

18、 the United Kingdom.3BS EN 1269713:2017EN 12697-13:2017 (E)1 ScopeThis European Standard specifies a test method for measuring the temperature of asphalt mixtures after mixing and during storage, transportation and laying. This European Standard includes the contact temperature-measuring device and

19、the non-contact temperature-measuring device (infrared-thermometer).2 Principle2.1 GeneralIn cases of dispute, the reference method using the contact temperature measuring device is preferred.2.2 Contact Temperature Measuring ThermometerA probe attached to a temperature measuring device is preheated

20、 before the temperature at stated depths in a number of locations is measured while the asphalt is in various stages of the delivery, laying and compaction process. The average is then calculated.2.3 Infrared-thermometerAn infraredthermometer is focussed on the surface of the asphalt to be measured

21、at various stages of the delivery, laying and compaction process. A number of locations on the asphalt surface will be measured. Afterwards, the mean is calculated.3 Apparatus3.1 Contact temperature measuring3.1.1 GeneralThe temperature measuring device shall have the capacity to measure the tempera

22、ture with an accuracy of 2 C and be fitted with a suitable probe of which the response time is known for the temperature interval which is to be measured. The temperature measuring device and probe shall be suitable for the use in that location where the temperature is to be measured.NOTE 1 The heat

23、sensing element of electronic thermometer probes is very small and is normally mounted in the tip of the probe, and therefore a single probe can be used for measuring temperatures of both bulk and as laid material.NOTE 2 Thermocouple probes available cover a large temperature range, typically 400 C.

24、The thermal capacity of the temperature measuring device shall be as small as possible, consistent with adequate robustness, to minimize the time required to obtain a reliable reading.3.1.2 Devices for measuring the temperature of material in a lorry or in a heapThe probe of the temperaturemeasuring

25、 device shall have a minimum length of 200 mm, with the sensing element positioned close to the end.3.2 Infrared-thermometerThe infraredthermometer shall be capable of detecting the temperature after a transformation of the wavelength range between 2 m and 14 m. The infraredthermometer shall record

26、the thermal radiation of the surface of the measured object. For an accurate measurement, it is important to focus the sensor of the infrared-thermometer in a sufficient angle and distance to the measured object.4 BS EN 1269713:2017EN 12697-13:2017 (E)For accurate measurements with the infraredtherm

27、ometer of any surface, it is necessary to know the specific emissivity of the material. The conditioning check is described in 4.2.2.NOTE As a function of the type of mixture, a value of the emissivity of 0,90 to 0,98 is appropriate.4 Procedure4.1 Contact Measuring Device4.1.1 Conditioning of instru

28、mentAllow the probe fitted to the temperature measuring device to heat up to the approximate temperature, during at least the device response time, of the material by placing it in one position before quickly moving it to another position to obtain the first measurement.NOTE The insertion of a cold

29、probe of relatively high thermal capacity will remove sufficient heat from the material to give a low temperature reading because of the low thermal capacity and conductivity of bituminous mixtures.4.1.2 Measurement of temperature in a lorryInsert the probe into the lorryload of material to a depth

30、of at least 100 mm. Take at least four measurements at evenly spaced intervals along each side of the lorry and at least 500 mm from the edges of the load. Calculate the result as the average of all the readings.NOTE Measurement on a lorryload is preferably performed from a sampling platform to avoi

31、d hazardous situations.4.1.3 Measurement material temperature after it has been laid and before or during rollingTake at least four measurements of the material prior to completion of rolling with the temperature sensitive element as close as possible to the middepth of the layer. Calculate the resu

32、lt as the average of all the readings. When measuring the temperature of asphalt to which chippings are applied, because of the short time normally available between laying the asphalt and the chippings being applied or commencement of the rolling it is unlikely that four measurements can be taken i

33、n a small area using a bimetallic thermometer because of its response time. If necessary, more than one such thermometer should be used to avoid delays in rolling. Alternatively, an electronic type of temperature measuring device should be used to obtain quicker readings.NOTE When measuring the roll

34、ing temperature of asphalt particular care is needed with regard to the proximity of moving compaction plant4.1.4 Measurements of temperature in a heapInsert the probe into the material to a depth of at least 100 mm. Take at least four measurements at intervals around the accessible perimeter and at

35、 least 300 mm from the base. Calculate the result as the average of all the readings.NOTE 1 A heap is assumed to be on the ground and not within equipment such as the paver hopper.NOTE 2 There are additional inherent dangers in measuring the temperature of a bituminous mixture in a paver hopper.5BS

36、EN 1269713:2017EN 12697-13:2017 (E)4.2 Infrared-thermometer4.2.1 GeneralAn infraredthermometer is designed to be capable of taking consistent readings from a surface of a layer or a constantly moving sample of asphalt.Only infrared thermometer able to adjust their emissivity value can be used.4.2.2

37、Comparison measurementA comparison measurement with a calibrated contact temperature measurement device has to be undertaken before a set of measurements. A sample of asphalt shall be measured with both the contact thermometer, conditioned according to 4.1.1, and the infraredthermometer at the same

38、time. Adjust the emissivity value of the infraredthermometer so that both thermometers indicate the same temperature.NOTE As a function of the type of mixture, a value of the emissivity of 0,90 to 0,98 is appropriate4.2.3 Temperature measurement4.2.3.1 GeneralFocus the infrared thermometer on the te

39、st point with the device held at an angle of 50 to 90 to the asphalt surface. Select the distance between the infraredthermometer and the test point so the area of asphalt being measured is fully within the measuring field of the infrared thermometer.4.2.3.2 Measurements of temperature in a lorryUnc

40、over the heap of asphalt in the lorry immediately prior to each single measurement.Take at least four measurements at evenly spaced intervals along each side of the lorry and at least 500 mm from the edges of the load. The measure distance should be always the same. Calculate the result as the avera

41、ge of all the readings.This measurement is dangerous and should not be carried out on site, only from a sampling platform, using a safe method of access to the surface of the hot asphalt4.2.3.3 Measurements of temperature in a heapUncover the heap of asphalt immediately prior to each single measurem

42、ent.Take at least four measurements at intervals around the accessible perimeter and at least 300 mm from the base. Calculate the result as the average of all the readings.4.2.3.4 Measurements of temperature in a paver hopperFocus the infraredthermometer to the moving material stream at the auger or

43、 slat conveyor of the hopper. Take at least four measurements. Calculate the result as the average of all the readings.5 Test Report5.1 Mandatory informationThe test report shall include the following information as appropriate:a) Date, Time and place of testing;6 BS EN 1269713:2017EN 12697-13:2017

44、(E)b) load number;c) site of measurement (in lorry or heap material);d) type of the measuring method;e) type and identifying number of the temperature measuring device used;f) specification of the material;g) average result in C;h) name of person performing the test;i) number and date of this Europe

45、an Standard.5.2 Optional informationIf required, the test report shall also include additional optional information such as the following:a) Name of project;b) name of supplier and source of material;c) date of production of material.6 PrecisionThere is no precision statement for any of these device

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