BS EN 12697-30:2012 BSI Standards Publication Bituminous mixtures — Test methods for hot mix asphalt Part 30: Specimen preparation by impact compactor BS EN 12697-30:2012 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 12697-30:2012 It supersedes BS EN 12697-30:2004 which is withdrawn The UK participation in its preparation was entrusted to Technical Committee B/510/1, Asphalt products A list of organizations represented on this committee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 are responsible for its correct application © The British Standards Institution 2012 Published by BSI Standards Limited 2012 ISBN 978 580 75767 ICS 93.080.20 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2012 Amendments issued since publication Date Text affected BS EN 12697-30:2012 EN 12697-30 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM April 2012 ICS 93.080.20 Supersedes EN 12697-30:2004+A1:2007 English Version Bituminous mixtures - Test methods for hot mix asphalt - Part 30: Specimen preparation by impact compactor Mélanges bitumineux - Méthodes d'essai pour mélange hydrocarboné chaud - Partie 30: Confection d'éprouvettes par compacteur impact Asphalt - Prüfverfahren für Heißasphalt - Teil 30: Probenvorbereitung, Marshall-Verdichtungsgerät This European Standard was approved by CEN on 26 February 2012 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-CENELEC 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-CENELEC Management Centre has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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, Turkey and United Kingdom EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 12697-30:2012: E BS EN 12697-30:2012 EN 12697-30:2012 (E) Contents Page Foreword 3 Scope 7 Normative references 7 Terms and definitions 7 Principle 7 5.1 5.1.1 5.1.2 5.2 5.2.1 5.3 5.4 5.5 5.6 5.7 Apparatus .7 Impact compactor with steel anvil .7 General 7 Conditions of installation 11 Impact compactor with wooden pedestal 12 General 12 Compaction mould 12 Ovens or hot plates 13 Steel block 13 Shields, baffle plates or sand baths 13 Plate 13 Shape and dimensions of the specimens 19 Specimen preparation 19 Procedure 19 Report 20 Annex A (informative) Device for the measurement of the specimens thickness during compaction 21 Annex B (informative) Checking procedure for impact compaction devices 22 B.1 Equipment 22 B.2 Procedure 22 B.3 Calculations and definition of impact dynamics: 22 B.4 Validation 23 B.5 Proposed process for validation of test equipment impact dynamics: 23 B.6 Checklist 24 Bibliography 25 BS EN 12697-30:2012 EN 12697-30:2012 (E) Foreword This document (EN 12697-30:2012) 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 identical text or by endorsement, at the latest by October 2012, and conflicting national standards shall be withdrawn at the latest by October 2012 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 all such patent rights This document supersedes EN 12697-30:2004+A1:2007 The following is a list of significant technical changes since the previous edition: allowance made for some oversize aggregate in the scope; informative annex for a checking procedure for impact compaction devices added; the tolerance on the angle of the sliding mass in reduced; the requirement for inspections to establish that the safety requirements have been complied with has been deleted; densities defined in Mg/m rather than kg/m ; the requirement on the moisture content of wooden block pedestal is moved to a note; the notes on the verification of the wooden block pedestal and the foot assembly have been clarified; definition of the steel compaction hammer tightened up; separate figure provided of typical compactor with wooden block; steel block made optional; the time that samples can be stored at elevated temperature reduced; the uniform upper limit on the temperature of 130 °C removed, leaving just the reference temperature in EN 12697-35; the limitations of heating of automatic compaction hammers is clarified in notes; the timing of preparing multiple samples is specified; requirements for filling the mould and reversing the specimen during compaction have been edited 3 This European Standard is one of a series of standards as listed below: EN 12697-1, Bituminous mixtures — Test methods for hot mix asphalt — Part 1: Soluble binder content EN 12697-2, Bituminous mixtures — Test method for hot mix asphalt — Part 2: Determination of particle size distribution BS EN 12697-30:2012 EN 12697-30:2012 (E) EN 12697-3, Bituminous mixtures — Test methods for hot mix asphalt — Part 3: Bitumen recovery: Rotary evaporator EN 12697-4, Bituminous mixtures — Test methods for hot mix asphalt — Part 4: Bitumen recovery: Fractionating column EN 12697-5, Bituminous mixtures — Test methods for hot mix asphalt — Part 5: Determination of the maximum density EN 12697-6, Bituminous mixtures — Test methods for hot mix asphalt — Part 6: Determination of bulk density of bituminous specimens EN 12697-7, Bituminous mixtures — Test methods for hot mix asphalt — Part 7: Determination of bulk density of bituminous specimens by gamma rays EN 12697-8, Bituminous mixtures — Test methods for hot mix asphalt — Part 8: Determination of void characteristics of bituminous specimens EN 12697-10, Bituminous mixtures — Test methods for hot mix asphalt — Part 10: Compactibility EN 12697-11, Bituminous mixtures — Test methods for hot mix asphalt — Part 11: Determination of the affinity between aggregate and bitumen EN 12697-12, Bituminous mixtures — Test methods for hot mix asphalt — Part 12: Determination of the water sensitivity of bituminous specimens EN 12697-13, Bituminous mixtures — Test methods for hot mix asphalt — Part 13: Temperature measurement EN 12697-14, Bituminous mixtures — Test methods for hot mix asphalt — Part 14: Water content EN 12697-15, Bituminous mixtures — Test methods for hot mix asphalt — Part 15: Determination of the segregation sensitivity EN 12697-16, Bituminous mixtures — Test methods for hot mix asphalt — Part 16: Abrasion by studded tyres EN 12697-17, Bituminous mixtures — Test methods for hot mix asphalt — Part 17: Particle loss of porous asphalt specimen EN 12697-18, Bituminous mixtures — Test methods for hot mix asphalt — Part 18: Binder drainage EN 12697-19, Bituminous mixtures — Test methods for hot mix asphalt — Part 19: Permeability of specimen EN 12697-20, Bituminous mixtures — Test methods for hot mix asphalt — Part 20: Indentation using cube or cylindrical specimens EN 12697-21, Bituminous mixtures — Test methods for hot mix asphalt — Part 21: Indentation using plate specimens EN 12697-22, Bituminous mixtures — Test methods for hot mix asphalt — Part 22: Wheel tracking EN 12697-23, Bituminous mixtures — Test methods for hot mix asphalt — Part 23: Determination of the indirect tensile strength of bituminous specimens EN 12697-24, Bituminous mixtures — Test methods for hot mix asphalt — Part 24: Resistance to fatigue EN 12697-25, Bituminous mixtures — Test methods for hot mix asphalt — Part 25: Cyclic compression test BS EN 12697-30:2012 EN 12697-30:2012 (E) EN 12697-26, Bituminous mixtures — Test methods for hot mix asphalt — Part 26: Stiffness EN 12697-27, Bituminous mixtures — Test methods for hot mix asphalt — Part 27: Sampling EN 12697-28, Bituminous mixtures — Test methods for hot mix asphalt — Part 28: Preparation of samples for determining binder content, water content and grading EN 12697-29, Bituminous mixtures — Test method for hot mix asphalt — Part 29: Determination of the dimensions of a bituminous specimen EN 12697-30, Bituminous mixtures — Test methods for hot mix asphalt — Part 30: Specimen preparation by impact compactor EN 12697-31, Bituminous mixtures — Test methods for hot mix asphalt — Part 31: Specimen preparation by gyratory compactor EN 12697-32, Bituminous mixtures — Test methods for hot mix asphalt — Part 32: Laboratory compaction of bituminous mixtures by vibratory compactor EN 12697-33, Bituminous mixtures — Test methods for hot mix asphalt — Part 33: Specimen prepared by roller compactor EN 12697-34, Bituminous mixtures — Test methods for hot mix asphalt — Part 34: Marshall test EN 12697-35, Bituminous mixtures — Test methods for hot mix asphalt — Part 35: Laboratory mixing EN 12697-36, Bituminous mixtures — Test methods for hot mix asphalt — Part 36: Determination of the thickness of a bituminous pavement EN 12697-37, Bituminous mixtures — Test methods for hot mix asphalt — Part 37: Hot sand test for the adhesivity of binder on precoated chippings for HRA EN 12697-38, Bituminous mixtures — Test methods for hot mix asphalt — Part 38: Common equipment and calibration EN 12697-39, Bituminous mixtures — Test methods for hot mix asphalt — Part 39: Binder content by ignition EN 12697-40, Bituminous mixtures — Test methods for hot mix asphalt — Part 40: In situ drainability EN 12697-41, Bituminous mixtures — Test methods for hot mix asphalt — Part 41: Resistance to de-icing fluids EN 12697-42, Bituminous mixtures — Test methods for hot mix asphalt — Part 42: Amount of coarse foreign matters in reclaimed asphalt EN 12697-43, Bituminous mixtures — Test methods for hot mix asphalt — Part 43: Resistance to fuel EN 12697-44, Bituminous mixtures — Test methods for hot mix asphalt — Part 44: Crack propagation by semi-circular bending test prEN 12697-45, Bituminous mixtures — Test methods for hot mix asphalt — Part 45: Saturation ageing tensile stiffness (SATS) conditioning test prEN 12697-46, Bituminous mixtures — Test methods for hot mix asphalt — Part 46: Low temperature cracking and properties by uniaxial tension tests EN 12697-47, Bituminous mixtures — Test methods for hot mix asphalt — Part 47: Determination of the ash content of natural asphalt BS EN 12697-30:2012 EN 12697-30:2012 (E) prEN 12697-481), Bituminous mixtures — Test methods for hot mix asphalt — Part 48: Inter-layer bond strength 1) prEN 12697-49 , Bituminous mixtures — Test methods for hot mix asphalt — Part 49: Determination of friction after polishing 1) prEN 12697-50 , Bituminous mixtures — Test methods for hot mix asphalt — Part 50: Scuffing resistance of surface course asphalt 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, Croatia, 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, Turkey and the United Kingdom 1) In preparation BS EN 12697-30:2012 EN 12697-30:2012 (E) Scope This European Standard specifies methods of moulding specimens from bituminous mixtures by impact compaction Such specimens are primarily used to determine bulk density and other technological characteristics e.g Marshall stability and flow according to EN 12697-34 This European Standard applies to bituminous mixtures (both those made up in a laboratory and those resulting from work site sampling), with not more than 15 % by mass retained on the 22,4 mm sieve and none on the 31,5 mm sieve 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 referenced document (including any amendments) applies EN 12591, Bitumen and bituminous binders — Specifications for paving grade bitumens EN 12697-10, Bituminous mixtures — Test methods for hot mix asphalt — Part 10: Compactibility EN 12697-27, Bituminous mixtures — Test methods for hot mix asphalt — Part 27: Sampling EN 12697-35:2004+A1, Bituminous mixtures — Test methods for hot mix asphalt — Part 35: Laboratory mixing EN 13924, Bitumen and bituminous binders — Specifications for hard paving grade bitumens EN 14023, Bitumen and bituminous binders — Specification framework for polymer modified bitumens Terms and definitions For the purposes of this document, the following terms and definitions apply 3.1 set number number of blows per side that is set for the test method for which the sample is intended to be used Note to entry: The number of blows is commonly 50 but can be 35 or 75 Principle To prepare the specimens, tempered asphalt mix, either freshly mixed according to EN 12697-35:2004+A1 or sampled on site or plant according to EN 12697-27 has to be transferred into a specified steel compaction mould The mixture is then compacted into one of the specified impact compactors by the sliding mass falling from a specified height with a specified number of blows within a specified time onto the foot of the hammer, located on top of the asphalt specimen The specimen is then allowed to cool down to room temperature Apparatus 5.1 5.1.1 Impact compactor with steel anvil General 5.1.1.1 The impact compactor with steel anvil (see Figure 1), a machine-driven apparatus shall comprise the components listed in 5.1.1.2 to 5.1.1.9 NOTE In Annex B, a guideline for possible checking based on self-composed equipment is described BS EN 12697-30:2012 EN 12697-30:2012 (E) 5.1.1.2 Steel base plate, 15 mm thick and about 600 mm × 610 mm, set horizontally on a firm base 5.1.1.3 Three feet of equal rigidity in the direction of both compression and shear, fitted with rubber buffers corresponding to the mass of the compaction pedestal 5.1.1.4 Compaction pedestal (see Figure 2) made of cast iron having a mass of at least 100 kg 5.1.1.5 Clamping device to hold the compaction mould NOTE Equipment with eccentric cam (see Figure 1) has been used successfully 5.1.1.6 Compaction hammer, consisting of a cylindrical guide rod, a sliding mass (see Figure 3), weighing (4 550 ± 20) g, and a foot (see Figure 4), weighing (3 960 ± 20) g 5.1.1.7 Chain-driven lifting gear, for the sliding mass, designed so that the length of the free fall is (460 ± 3) mm 5.1.1.8 NOTE Device for counting and recording the number of blows The number of blows should be counted and added 5.1.1.9 Linear variable differential transformer (optional), as described in Annex A, for measuring the specimen thickness during compaction for measuring compactibility in accordance with EN 12697-10 BS EN 12697-30:2012 EN 12697-30:2012 (E) Dimensions in millimetres Key NOTE 1 guide post clamp ring spring hinge post sample mould steel plate tie rods wood block concrete block 10 mould base locating pins A suitable framework is secured to the pedestal to ensure that the compaction is kept vertical NOTE For the permanent centring of the timber block, either the concrete base is recessed (as shown) or an angle housing is bolted to the concrete base NOTE The figure shows a suitable mould clamp system; other systems may be found equally satisfactory Figure — Compaction pedestal 14 BS EN 12697-30:2012 EN 12697-30:2012 (E) Dimensions in millimetres Key guide rod free fall spring housing sliding weight foot assembly Figure — Typical compaction hammer 15 BS EN 12697-30:2012 EN 12697-30:2012 (E) Dimensions in millimetres Dimensions in millimetres Key extension collar mould cylinder mould base Figure — Typical compaction mould for impact Figure — Typical extension collar for compaction compactor with steel anvil mould 16 BS EN 12697-30:2012 EN 12697-30:2012 (E) Dimensions in millimetres Figure — Typical mould cylinder for compaction mould Dimensions in millimetres Figure 10 — Typical mould base of compaction mould 17 BS EN 12697-30:2012 EN 12697-30:2012 (E) Key a extension/extraction collar extraction plate mould cylinder mould base symmetrical Figure 11 — Typical set of equipment for compaction mould for impact compactor with wooden pedestal 18 BS EN 12697-30:2012 EN 12697-30:2012 (E) Dimensions in millimetres Figure 12 — Diagrammatic representation of plate fitted with cylindrical discs Shape and dimensions of the specimens The specimen shall be a cylinder of diameter (101,6 ± 0,1) mm and height (63,5 ± 2,5) mm The maximum aggregate size of the mixture shall not exceed 22,4 mm Specimen preparation Prepare specimens using laboratory mixed asphalt or plant mixed asphalt Because the amount of mixture needed for a specimen of specified height varies depending on the maximum density of the mixture, between 050 g and 400 g, the amount of mixture required for the specified height, shall be determined by carrying out a trial compaction Specimens prepared from the same batch shall be, as far as possible, all of equal mass The quantity of mixture prepared for compaction shall be not more than that required for specimens Procedure 8.1 If required after mixing, the quantity of mixture required for specimen shall be stored for not more than h, without fresh air circulation, in an oven set at a maximum of the temperature given in 8.2 8.2 The mixture shall be quickly brought up to the compacting temperature For mixtures produced with paving grade bitumen in accordance with EN 12591, the compaction temperature is: reference temperature given in EN 12697-35:2004+A1 For mixtures produced with bitumen in accordance with EN 14023 or EN 13924, the compaction temperature shall be as defined by the supplier 8.3 Heat the foot of the impact hammer (see Figure 6) and the complete mould prior to the preparation of the first specimen NOTE The entire compaction hammer, complete with foot, is placed on a gently heated electric hotplate for about 10 before the first specimen is prepared With automatic hammers, it is not always practical to remove the foot to heat in an oven In such cases alternative arrangements are needed NOTE The first compacted sample is rejected when the hammer can only be heated by contact with the mixture If specimens are being prepared in batches, the foot and mould base shall only be heated prior to the preparation of the first specimen of the batch If there is a gap of more than 10 between finishing one specimen and starting compaction of the next in a batch, the heating shall be repeated 8.4 Assemble the mould base, compaction mould and extension collar and heat up to the compaction temperature Place a thin disc of tough, impermeable material, such as non-absorbent paper, slightly less than 100 mm diameter on the mould base prior to filling Place the heated mixture in the mould assembly and distribute it evenly by spading with a heated spatula or knife Care shall be taken that segregation does not occur After filling, gently level the surface of the mixture with the spatula and cover with a second filter disc The inside of the compaction mould shall not be coated with a parting agent 19 BS EN 12697-30:2012 EN 12697-30:2012 (E) 8.5 The compaction procedure shall then be commenced without delay Fill the mould and compact the specimen within The extension collar shall be set on the mould cylinder and connected to the compaction pedestal with the aid of the clamping device specified in 5.1.1.5 When the compaction hammer has been fitted, compact the specimen within 55 s to 60 s by applying the set number of blows, the sliding mass falling from a height of (460 ± 3) mm for the impact compactor to 5.1; (457 ± 5) mm for the impact compactor to 5.2 The sliding mass shall not be kept back when it rebounds after impact In accordance with the test purpose of the specimen to be compacted, a different number of blows can be fitted 8.6 Remove the extension collar Invert the mould, placing it on the base plate Re-fit the extension collar and apply a further set number of blows in accordance with 8.5 8.7 For further compaction (e.g for refusal density) reverse the mould again for twice and compact the specimen in accordance with 8.6 The compaction procedure shall be completed within Remove the filter discs and mark the specimen for identification purposes NOTE For other purposes the number of blows on each side may be changed 8.8 Place the compaction mould containing the hot specimen on one of the cylindrical discs on the plate shown in Figure 12, in such a way that the specimen is directly supported by the disc Cool the specimen in air or with the aid of a fan to approximately 40 °C and extract from the mould with the extruding device NOTE Water cooling may be used if quick results are needed If water cooling is used, the specimen shall remain in the mould and shall not have direct contact with the water The water shall only have contact with the mould After removal, place the specimen on a flat base and cool further to a temperature of between 18 °C and 28 °C Report The test report shall make reference to this European Standard and shall include at least the following information: a) identification of the mixture; b) method of manufacture of the mixture, or if it was sampled from a compacted layer, size and location of the sample; c) type of impact compactor; d) test conditions; e) compaction temperature; f) number of blows 20 BS EN 12697-30:2012 EN 12697-30:2012 (E) Annex A (informative) Device for the measurement of the specimens thickness during compaction An inductive measurement of the specimen thickness during compaction is possible with the addition of a Linear Variable Differential Transformer (LVDT) The LVDT should have an accuracy of ± 0,02 mm The device is added to the apparatus in the way shown in Figure A.1 The LVDT should be connected to a computer for data-registration Dimensions in millimetres Key LVDT Figure A.1 — Linear Variable Differential Transformer (LVDT) 21 BS EN 12697-30:2012 EN 12697-30:2012 (E) Annex B (informative) Checking procedure for impact compaction devices B.1 Equipment B.1.1 Load cell with a range of 500 % of the expected measured peak load B.1.2 Measuring amplifier with a measurement frequency of 20 000 Hz The measuring amplifier has to be able to measure free from electromagnetic disturbances B.1.3 A specially designed device (in the shape of a Marshall mould), able to accommodate the load cell It should be provided with an opening for the connection cord and a suitable fixation device, able to keep the load cell securely fixed under the compaction hammer, avoiding any displacement B.1.4 Data collection device, provided with software suitable for the acquisition/ filtering of the peak forces and peak durations B.2 Procedure B.2.1 According to the checklist in B.6, verify items to 9, so that the impact compactor is in the required condition B.2.2 Place and secure the impact meter (load cell and its container) centred under the compacting hammer of the impact compactor B.2.3 Connect the load cell to the measuring amplifier and data collection device Set the amplifier at a measurement speed of 20 000 Hz B.2.4 Apply 20 consecutive blows and record their corresponding force versus time measurements B.3 Calculations and definition of impact dynamics: B.3.1 the first three and last three measurements B.3.2 Determine the maximum force for each measurement i (Fmax,i) in kN B.3.3 Determine the duration (in ms) of each measured force peak value (Tpulse,i) as follows: Plot a straight line coincident with the (first) ascending straight segment of the force curve Plot a second straight line coincident with the (last) descending straight segment of the curve Plot a straight line down through the zero line Determine the abscissa at the intersection points of both ascending and descending straight lines with the base line and measure the time interval between these points This time interval is the peak duration B.3.4 Determine the average force peak value and peak duration Determine also the standard deviation of the force peak values B.3.5 Calculate the product of the peak force Fmax,i and peak duration Tpulse,i for each blow i Determine the mean value of Fmax,i × Tpulse,i Calculate the ratio between the force-time product for each measurement i and the average Fmax,i × Tpulse,i B.3.6 Define the average impact pattern of the force curves obtained, by choosing from the following options, the one that fits best 22 BS EN 12697-30:2012 EN 12697-30:2012 (E) a) The same ascent and descent angle of slope in the impact curve b) Ascent and descent angles of slope are significantly different from each other c) Compound curve Several lower force peaks around a main one are registered B.4 Validation B.4.1 According to results obtained in B.3.2 and B.3.3: a) The differences with respect to the established optimum peak force and peak duration are less than 15 %: Adequate impact dynamics b) The differences with respect to the established optimum peak force and peak duration are between 15 % and 25 %: Questionable impact dynamics c) The differences with respect to the established optimum peak force and peak duration are more than 25 %: Significantly different impact dynamics Compactor has to be revised or upgraded B.4.2 The standard deviation of the force peak values obtained in B.3.4 should not exceed % B.4.3 If the ratio obtained in B.3.5 for each blow i is less than 20 % with respect to the average Fmax,i × Tpulse,i, then the impact compactor works correctly B.4.4 The shape of impact curve, defined as per B.3.6, is related to the state of maintenance of the compactor: a) B.3.6.a) means an optimal operation b) B.3.6.b) indicates that an energy absorption by the compactor is taking place in each blow c) B.3.6.c) indicates severe wear or loose fitting in the falling weight/ guide rod contact area B.5 Proposed process for validation of test equipment impact dynamics: Suitable ranges of values for the optimum peak force and peak duration should be proposed, according to those normally obtained by representative impact compactors of both steel anvil and wooden pedestal type The selected test equipment can be validated by comparing the measurement results to the standard test field in relation to a representative impact compactor This allows different measurement setups in relation to the current measurement file The procedure and values to fill this matter have not been determined yet 23 BS EN 12697-30:2012 EN 12697-30:2012 (E) B.6 Checklist No Item to be checked Correct? Does the hammer stand perfectly vertical with respect to the specimen? Yes/No Is the mould base and compaction mould properly attached to the pedestal? Yes/No Is the steel base plate intact? Yes/No Do the lifting gear and impact counter work properly? Yes/No Does the sliding mass fall free of the chain? Yes/No Is the guide rod free of rust and imperfections? Yes/No Is the foot of the hammer clean and free of imperfections? Yes/No Is the anvil clean and free of imperfections? Yes/No Are the sliding weight and drop height calibrated? Yes/No 9a Is the difference between actual and desired drop height less than mm? Yes/No 9b Is the difference between actual and desired drop weight less than 15 grams? Yes/No If one of the items is answered with “NO”, then the impact compactor has to be upgraded 24 BS EN 12697-30:2012 EN 12697-30:2012 (E) Bibliography [1] EN 12697-34, Bituminous mixtures — Test methods for hot mix asphalt — Part 34: Marshall test 25 This page deliberately left blank This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited About us Revisions We bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions Our British Standards and other publications are updated by amendment or revision The knowledge embodied in our standards has been carefully assembled in a dependable format and refined through our open consultation process Organizations of all sizes and across all sectors choose standards to help them achieve their goals Information on standards We can provide you with the knowledge that your organization needs to succeed Find out more about British Standards by visiting our website at bsigroup.com/standards or contacting our Customer Services team or Knowledge Centre Buying standards You can buy and download PDF versions of BSI publications, including British and adopted European and international standards, through our website at bsigroup.com/shop, where hard copies can also be purchased If you need international and foreign standards from other Standards Development Organizations, hard copies can be ordered from our Customer Services team Subscriptions Our range of subscription services are designed to make using standards easier for you For further information on our subscription products go to bsigroup.com/subscriptions With British Standards Online (BSOL) you’ll have instant access to over 55,000 British and adopted European and international standards from your desktop It’s available 24/7 and is refreshed daily so you’ll always be up to date You can keep in touch with standards developments and receive substantial discounts on the purchase price of standards, both in single copy and subscription format, by becoming a BSI Subscribing Member PLUS is an updating service exclusive to BSI Subscribing Members You will automatically receive the latest hard copy of your standards when they’re revised or replaced To find out more about becoming a BSI Subscribing Member and the benefits of membership, please visit bsigroup.com/shop With a Multi-User Network Licence (MUNL) you are able to host standards publications on your intranet Licences can cover as few or as many users as you wish With updates supplied as soon as they’re available, you can be sure your documentation is current For further information, email bsmusales@bsigroup.com BSI Group Headquarters 389 Chiswick High Road London W4 4AL UK We continually improve the quality of our products and services to benefit your business If you find an inaccuracy or ambiguity within a British Standard or other BSI publication please inform the Knowledge Centre Copyright All the data, software and documentation set out in all British Standards and other BSI publications are the property of and copyrighted by BSI, or some person or entity that owns copyright in the information used (such as the international standardization bodies) and has formally licensed such information to BSI for commercial publication and use Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI Details and advice can be obtained from the Copyright & Licensing Department Useful Contacts: Customer Services Tel: +44 845 086 9001 Email (orders): orders@bsigroup.com Email (enquiries): cservices@bsigroup.com Subscriptions Tel: +44 845 086 9001 Email: subscriptions@bsigroup.com Knowledge Centre Tel: +44 20 8996 7004 Email: knowledgecentre@bsigroup.com Copyright & Licensing Tel: +44 20 8996 7070 Email: copyright@bsigroup.com