SIST EN 12697-30:2019
(Main)Bituminous mixtures - Test methods - Part 30: Specimen preparation by impact compactor
Bituminous mixtures - Test methods - Part 30: Specimen preparation by impact compactor
This draft 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 draft 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.
Asphalt - Prüfverfahren - Teil 30: Probenvorbereitung, Marshall-Verdichtungsgerät
Dieser Europäische Norm-Entwurf legt Verfahren zur Herstellung von Probekörpern aus Asphalt mittels Schlagverdichtung fest. Diese Probekörper werden hauptsächlich zur Bestimmung der Raumdichte und anderer technologischer Kennwerte, wie z. B. der Marshall-Stabilität und des Marshall-Fließwertes nach EN 12697 34, verwendet.
Dieser Europäische Norm-Entwurf gilt für Asphalt (sowohl im Labor hergestellten als auch auf der Baustelle entnommenen Asphalt) mit einem Siebrückstand von maximal 15 % (Massenanteil) auf einem 22,4 mm Sieb sowie ohne Rückstand auf einem 31,5 mm Sieb.
Mélanges bitumineux - Méthodes d'essai - Partie 30: Confection d'éprouvettes par compacteur à impact
Le présent projet de Norme européenne spécifie des méthodes pour mouler des éprouvettes de mélanges bitumineux au moyen d’un compactage par impact. Ce genre d’éprouvettes est principalement utilisé pour déterminer la masse volumique apparente et d’autres caractéristiques technologiques, par exemple la stabilité Marshall et le fluage selon l’EN 12697-34.
Le présent projet de Norme européenne s’applique aux mélanges bitumineux (à la fois confectionnés en laboratoire et provenant de prélèvements de chantier), présentant un refus inférieur ou égal à 15 % en masse sur le tamis de 22,4 mm et aucun refus sur le tamis de 31,5 mm.
Bitumenske zmesi - Preskusne metode - 30. del: Priprava preskušancev z udarnim zgoščevalnikom
Ta osnutek evropskega standarda določa metode ulivanih preskušancev iz bitumenskih zmesi z udarnim zgoščevanjem. Takšni preskušanci se v glavnem uporabljajo za ugotavljanje prostorninske gostote in drugih tehnoloških lastnosti, npr. stabilnosti po Marshallu in pretočnosti v skladu s standardom EN 12697-34.
Ta osnutek evropskega standarda se uporablja za bitumenske zmesi (za tiste, izdelane v laboratoriju, in za tiste, ki izhajajo iz vzorčenja na delovišču) s 15 % delcev ali manj, ki ostanejo na situ 22,4 mm, in ne vsebujejo delcev, ki ostanejo na situ 31,5 mm.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.]JRãþHYDOQLNRPAsphalt - Prüfverfahren - Teil 30: Probenvorbereitung, Marshall-VerdichtungsgerätMélanges bitumineux - Méthodes d'essai - Partie 30: Confection d'éprouvettes par compacteur à impactBituminous mixtures - Test methods - Part 30: Specimen preparation by impact compactor93.080.20Materiali za gradnjo cestRoad construction materialsICS:Ta slovenski standard je istoveten z:EN 12697-30:2018SIST EN 12697-30:2019en,fr,de01-marec-2019SIST EN 12697-30:2019SLOVENSKI
STANDARDSIST EN 12697-30:20121DGRPHãþD
SIST EN 12697-30:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12697-30
December
t r s z ICS
{ uä r z rä t r Supersedes EN
s t x { yæ u rã t r s tEnglish Version
Bituminous mixtures æ Test methods æ Part
u rã Specimen preparation by impact compactor Mélanges bitumineux æ Méthodes d 5essai æ Partie
u rã Confection d 5éprouvettes par compacteur à impact
Asphalt æ Prüfverfahren æ Teil
u rã Probenvorbereitungá MarshallæVerdichtungsgerät This European Standard was approved by CEN on
{ November
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s t x { yæ u rã t r s z ESIST EN 12697-30:2019
EN 12697-30:2018 (E) 2 Contents Page
European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 4 4 Principle . 4 5 Apparatus . 4 6 Shape and dimensions of the specimens . 16 7 Specimen preparation . 16 8 Procedure. 16 9 Test report . 17 Annex A (informative)
Device for the measurement of the specimens thickness during compaction . 18 Annex B (informative)
Checking procedure for impact compaction devices . 19 B.1 Equipment . 19 B.2 Procedure. 19 B.3 Calculations and definition of impact dynamics: . 19 B.4 Validation . 20 B.5 Proposed process for validation of test equipment impact dynamics: . 20 B.6 Checklist . 21 Bibliography . 22
SIST EN 12697-30:2019
EN 12697-30:2018 (E) 3 European foreword This document (EN 12697-30:2018) has been prepared by Technical Committee CEN/TC 227 “Road materials”, the secretariat of which is held by BSI. 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 June 2019 and conflicting national standards shall be withdrawn at the latest by June 2019. 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 identifying any or all such patent rights. This document supersedes EN 12697-30:2012. The following is a list of significant technical changes since the previous edition: — the series title no longer makes the method exclusively for hot mix asphalt; — [2] Change to undated reference to EN 12697-35 including change of title; — [2] Change of titles for EN 12697-10 and EN 12697-27 (hot mix asphalt deleted); — [4] Change to undated reference to EN 12697-35; — [5.1.1] and [5.2.1] For clarity “self-composed” is deleted from respective NOTE; — [5.2.2.2] Last paragraph merged in to current NOTE; — [Figure 5] NOTE 3 changed to normal text; — [7] Deleted description for the quantity of mixture prepared for compaction to be not more than that required for 4 specimens; —
[8.2] To avoid conflicting requirements with EN 12697-35 all text is deleted and replaced with a general reference to EN 12697-35; — [8.5] New paragraph added with description for the use of different number of blows; —
[8.7] NOTE deleted and inserted as normal text in the new paragraph in [8.5]. A list of all parts in the EN 12697 series can be found on the CEN website. 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, 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 the United Kingdom. SIST EN 12697-30:2019
EN 12697-30:2018 (E) 4 1 Scope This document 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 document 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. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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 12697-10, Bituminous mixtures — Test methods — Part 10: Compactability EN 12697-27, Bituminous mixtures — Test methods — Part 27: Sampling EN 12697-35, Bituminous mixtures — Test methods — Part 35: Laboratory mixing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — Electropedia I.E.C. available at http://www.electropedia.org/ — ISO Online browsing platform: available at http://www.iso.org/obp 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 1 to entry: The number of blows is commonly 50 but can be any value between 25 and 100. 4 Principle To prepare the specimens, tempered asphalt mix, either freshly mixed according to EN 12697-35 or sampled on site or plant according to EN 12697-27 shall 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 shall then cool down to room temperature. 5 Apparatus 5.1 Impact compactor with steel anvil: 5.1.1 General: The impact compactor with steel anvil (see Figure 1): a machine-driven apparatus shall comprise the components listed in 5.1.1.1 to 5.1.1.8. NOTE In Annex B, a guideline for possible checking of equipment is described. SIST EN 12697-30:2019
EN 12697-30:2018 (E) 5 5.1.1.1 Steel base plate, 15 mm thick and about 600 mm × 610 mm, set horizontally on a firm base. 5.1.1.2 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. 5.1.1.3 Compaction pedestal (see Figure 2) made of cast iron having a mass of at least 100 kg. 5.1.1.4 Clamping device to hold the compaction mould. NOTE Equipment with eccentric cam (see Figure 1) has been used successfully. 5.1.1.5 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. 5.1.1.6 Chain-driven lifting gear, for the sliding mass, designed so that the length of the free fall is (460 ± 3) mm. 5.1.1.7 Device for counting and recording the number of blows. The number of blows should be counted and added. 5.1.1.8 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. SIST EN 12697-30:2019
EN 12697-30:2018 (E) 6
Key 1 basic apparatus with power-driven lifting gear for the sliding mass and impact counter (shown without shielding) 2 compaction hammer with guide rod for the sliding mass 3 eccentric cam for clamping device 4 mould base with compaction mould attached 5 compaction pedestal 6 feet 7 steel base plate 8 shielding Figure 1 — Diagrammatic sketch of the impact compactor NOTE See Annex A for optional linear variable differential transformer to measure the specimen thickness during compaction. SIST EN 12697-30:2019
EN 12697-30:2018 (E) 7 Dimensions in millimetres
Key 1 lifting gear 2 base plate 3 foot Figure 2 — Diagrammatic representation of compaction pedestal, supported on feet SIST EN 12697-30:2019
EN 12697-30:2018 (E) 8 Dimensions in millimetres
Key a counter balance Figure 3 — Sliding mass of compaction hammer SIST EN 12697-30:2019
EN 12697-30:2018 (E) 9 Dimensions in millimetres
The tolerance on the diameter of the foot of the compaction hammer shall be ± 0,5 mm. Figure 4 — Foot of compaction hammer 5.1.2 Conditions of installation: 5.1.2.1 The impact compactor shall be set up in such a way that the base plate is horizontal. It shall be possible to insert the compaction hammer vertically and centrally into the compaction mould in order to ensure a virtually friction-free fall of the sliding mass along the guide rod. The compactor shall be set up in such a way so that the sliding mass is vertically + 2°. The following safety and inspection requirements shall be applied: 5.1.2.2 During insertion and reversion of the mould cylinder in the compacting machine, the compaction hammer shall be secured in its upper rest position against accidental release. The compaction hammer shall be kept suspended at the top of the guide rod by means of a hoist. NOTE This can be carried out by connecting the hoisting rope either to the clamping device on the eccentric cam or to a lever arrangement that is itself safeguarded against accidental release. Therefore, the compaction mould can only be inserted and removed when the hammer is suspended and securely fastened. 5.1.2.3 Measures shall be taken to prevent access to the danger zone when the lifting gear is in operation. NOTE This can be achieved, for example, by the provision of a moveable shield fitted with an automatic locking device or by arranging for the sound-proof cubicle to be locked automatically when the apparatus is running. 5.1.2.4 Requirements as to noise emission shall be met when operating an impact compactor, e.g. by erecting a soundproof cubicle. SIST EN 12697-30:2019
EN 12697-30:2018 (E) 10 5.2 Impact compactor with wooden pedestal: 5.2.1 General: The impact compactor with wooden pedestal (see Figure 5), a machine-driven apparatus, shall comprise the components listed in 5.2.2 to 5.2.3. NOTE In Annex B, a guideline for possible checking of equipment is described. 5.2.2 Compaction pedestal (see Figure 5) shall consist of the components given in 5.2.2.1 to 5.2.2.3. 5.2.2.1 Vibrated concrete base, of minimum density 2,200 Mg/m3 and minimum dimensions of 450 mm × 450 mm × 200 mm with shoulder to receive a laminated hardwood block. 5.2.2.2 Laminated hardwood block (200 ± 4) mm in cross section and (450 ± 4) mm in height, made from dry straight-grained, seasoned timber (such as Sapele) free from shakes, splits and knots with a density of 0,67 Mg/m3 to 0,78 Mg/m3. The block shall be built up of between 6 and 10 approximately equal laminations of quarter sawn board bonded with waterproof resin glue. The ends shall be smooth and normal to the vertical axis and the block shall be treated with a water-resistant impregnate and varnished to minimize changes of moisture content. The dry mass of timber is based on an average moisture content of 15 %. The suitability of a block in terms of its density can be confirmed by comparative density measurements of compacted specimens compared to those compacted with an apparatus fitted with a block that is known to comply. The average of three specimen compacted with each block should not differ by more than 0,02 Mg/m3. 5.2.2.3 Mild steel plate, (300 ± 5) mm × (300 ± 5) mm × (25 ± 1) mm fitted with a
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