WO1996037660A1 - Procede relatif a la preparation et a la production de materiaux bitumineux pour une application a froid dans les travaux de voirie ou pavage - Google Patents

Procede relatif a la preparation et a la production de materiaux bitumineux pour une application a froid dans les travaux de voirie ou pavage Download PDF

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Publication number
WO1996037660A1
WO1996037660A1 PCT/DK1996/000224 DK9600224W WO9637660A1 WO 1996037660 A1 WO1996037660 A1 WO 1996037660A1 DK 9600224 W DK9600224 W DK 9600224W WO 9637660 A1 WO9637660 A1 WO 9637660A1
Authority
WO
WIPO (PCT)
Prior art keywords
fractions
emulsions
emulsion
breaking
mixing
Prior art date
Application number
PCT/DK1996/000224
Other languages
English (en)
Inventor
Leo Hove
Original Assignee
Vejtek International A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vejtek International A/S filed Critical Vejtek International A/S
Priority to EP96916016A priority Critical patent/EP0828895A1/fr
Priority to AU58930/96A priority patent/AU698694B2/en
Publication of WO1996037660A1 publication Critical patent/WO1996037660A1/fr
Priority to NO975395A priority patent/NO975395L/no

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
    • E01C19/1068—Supplying or proportioning the ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • C08L95/005—Aqueous compositions, e.g. emulsions
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders

Definitions

  • a method of preparing and producing asphalt materials to be laid out as a cold road construction or paving material is a method of preparing and producing asphalt materials to be laid out as a cold road construction or paving material.
  • the present invention relates to a method of cold produc- tion of asphalt materials for a cold laying out as a road building or repair material.
  • This 'hot' method has noticeable limitations and drawbacks, not only with respect to the high heat con ⁇ sumption and the large investment costs, but also in that the method should be seen as a totality in connection with a given paving work. Since the material cannot be satisfacto ⁇ rily laid out and compressed if the transportation distance from the factory to the working site or the waiting time at the laying site is so long that the material is cooled sub- stantially, the method is sensitive to transportation dis ⁇ tance as well as to irregularities in the laying rhythm.
  • the method is very sensitive to variations in the laying rhythm, i.e. there will be severe risks that an already prepared material charge becomes unusable due to the breaking of the emulsion taking place too early or too late.
  • An early breaking implies that the material conglutinates prior to the laying out, whereby it may be difficult or im- possible to lay the material in a satisfactory manner; by a late breaking, by which the material will be shapeable during the laying out, the laid out material, until the breaking oc ⁇ curs, will be unstable in response to mechanical influence, causing deformation of the material layer, and to rain water, which will act to wash out the unbroken emulsion, whereby the final binding will be inferior to the expected result.
  • the "material” is to be understood as two or at least two material fractions, which are prepared with latent breaking agents that will, each, be activated by a mixing together with the other fraction, but otherwise leaving the material fraction with the binder emul ⁇ sion in a time non-determined, non-actuated condition.
  • latent breaking agents that will, each, be activated by a mixing together with the other fraction, but otherwise leaving the material fraction with the binder emul ⁇ sion in a time non-determined, non-actuated condition.
  • this may be easily realised in preparing, for later mixing together, two separate material fractions with binder emulsions of anionic and cationic type, respectively.
  • binder emulsions may each be adapted to be, over time, practically unlimited actuatable, also so as to not break by the mixing together with the associated stone fraction, and each of the two material fractions may thus be produced to stock, when only they are kept strictly separate. It is then possible at any time to collect from the stock re ⁇ spective portions of the two types, which, upon a mixing to ⁇ gether that need not be very intensive, may be brought to laying out whether in connection with larger construction or renovation works or with more isolated repair works.
  • the new technique will imply that the asphalt plants are free to run a production to stock, which can be done by an even production such that the produc ⁇ tion capacity can be adjusted to an average consumption and not to an acute maximum consumption during separate periods of time, this implying a much more economic production.
  • mixing facilities should be at disposal, operable with a capacity as required during periods with high consumption of the material to be laid out, but this equipment may be rather simple; it should be able to effect a mixing, but the mixing need not be particularly in ⁇ tensive or uniform, because in the laid out material a cer ⁇ tain migration of the anionic and cationic emulsions will oc ⁇ cur.
  • the asphalt plant should not nec ⁇ essarily be equipped with a conventional compulsive mixing equipment, since for both types of material it will be suffi ⁇ cient to effect a spraying dosing of the emulsion e.g. on a falling flow of the stone material; when the material is thereafter stocked without any breaking of the emulsion, the emulsion may then, gradually, distribute itself over the sur ⁇ face portions of the stones that might be left uncoated by the spraying, such that the stones may nevertheless be fully coated when the time comes to mix the two types of material. This conditions a significant cost saving in processing equipment and labour in the asphalt plants.
  • the stone material will normally include a fine fraction such as sand, and when the material is processed as here described the fine fraction will tend to be preferentially coated. For this reason it may be preferred to effect a conventional homogenous mixing of the respective material types, unless the different fractions are processed individually.
  • the emulsions are liable to un ⁇ dergo some degree of breaking as a result of their contacting the stone material.
  • Such a partial breaking which leaves the material fully shapeable, has the advantage of ensuring that the stones are durably coated with a cohesive and adhesive layer of binder.
  • the collection of the material from the stock or the storing places can be supple- mented by a delivery of the material directly from the pro ⁇ cessing equipment of the asphalt plant, inasfar as both of the material types may be equally usable after storing and immediately after being prepared.
  • the types of material may occur as packed in sacks, whereby they can be mixed to form very small total portions for execution of pro ⁇ nounced small jobs, this so for not having been a realistic possibility.
  • the invention may provide for the option of the two types of material to be sold as sacked products in various building markets and yet still be applicable for ad ⁇ vanced laying out at a large scale.
  • precoated stones i.e. stones prepared with a coating of bitumen by a cold or hot process.
  • various ad ⁇ ditives may be used, e.g. some polymers or fibre material that will stabilise the water against breaking of the emulsi ⁇ on.
  • solvents may be entirely avoided.
  • a noticeable mixing of the emulsions or polymer modified bituminous emulsions will occur immediately by the bringing together of the two material types as well as by the compres ⁇ sion that is normally effected just after the laying out, and in most cases the road will be ready to receive both traffic and rain water as soon as the laying out and the mechanical aftertreatment is finished.
  • the breaking and the binding oc- cur from the very beginning all over the material, from bot ⁇ tom to top, but the conditions can be controlled such that the material remains shapeable during the laying out. It should be mentioned that for just this reason it will be worth endeavouring that the preceding mixing operation should not be particularly efficient, whereby the mixing will be that much simpler to carry out.
  • the invention will be well suited for treatment and utilisation of recycled asphalt, which will typically hold 4- 6% bituminous binder with good adhesion to the stones.
  • the material is re-worked by an addition of a few percent of ad ⁇ ditional binder in emulsified form, whereafter the material or the respective material types will be ready for a cold laying out whenever required.
  • the two types of material should not necessarily be mixed in the ratio 1:1, as in general terms they should only be mixed in a ratio such that the associated and desired pH-ad- justment for actuation of the emulsion breaking will be ob- tained. If one emulsion is more acid than the other is basic, then it is relevant to use a relatively smaller amount of the acid fraction.
  • the invention is extended to the use of con ⁇ tra-polar emulsions or agents which, breakingwise, will actu- ate each other when being mixed together, but otherwise being substantially non-breaking or at least non-breaking through a desired period of time, ranging from few hours to several years.
  • This result is achievable by the use of the respective anionic and cationic emulsions, but probably it can be achieved also by means of other 'contra-polar systems' such as different, but mutually miscible liquids or solids in liq ⁇ uids or colloidal suspension or gells.
  • bituminous binders in the respective emulsions are not of the same viscosity or rheology and may be hydro ⁇ carbon binders or bitumens modified by polymers or additives, or unmodified binders with or without additives such as sil ⁇ ica fume or filler or fibres or carbon black or adhesion agents;
  • bituminous emulsions are both cationic or both anionic or non-ionic or combinations such that the two sepa ⁇ rately coated material fractions when mixed together act as breaking agents for each other, either as PH modifiers or as buffers or as destabilising chemical reaction initiators;
  • bituminous or hydrocarbon binders in the res ⁇ pective emulsions react with each other after coalescence or cross-link upon contact such that a higher cohesion or vis ⁇ cosity results, with the benefit of enhanced properties of the mixture of two material fraction
  • the stone material may consist of pre-coated fines an uncoated coarse particles or pre-coated coarse particles and uncoated fines or blend of both or totally pre-coated ma ⁇ terial by methods including the use of bituminous and hydro ⁇ carbon emulsions, foamed bituminous or hydrocarbon of any po ⁇ larity, hot coating or any combination of these;
  • the prepared material fractions may consist of more than two separate fractions and can be composed of fines or coarse fractions in any ratio such that when homogeneously mixed together the desired aggregate grating curve is formed;
  • the emulsion system may include a two component epoxy resin bitumen blend or polyurethane system as two sepa- rate emulsion systems made to break each other.
  • the bitumen in the emulsions may be of any viscosity, as suitable for respective applications; there is no upper limit, so viscosities of e.g. 200,000 og 500,000
  • A 70% anionic emulsion based on B180 produced in accordance with ASTM class SS.
  • B 70% cationic emulsion based on B180 produced in accordance with ASTM class CSS.
  • A 70% anionic emulsion based on B80 produced in accordance with ASTM class MS.
  • B 70% cationic emulsion based on B80 produced in accordance with ASTM class CMS.
  • A 70% anionic emulsion based on B180 produced in accordance with ASTM class SS.
  • B 70% cationic emulsion based on B180 produced in accordance with ASTM class CSS.
  • Emulsions A: 50% anionic emulsion based on B180 produced in accordance with ASTM class SS.
  • B 50% cationic emulsion based on B180 produced in accordance with ASTM class CSS.
  • the material is hereafter treated as in example 3. Sacked materials for reinstatement purposes.
  • the aggregate is precoated with 1.5% B80.
  • A 70% anionic emulsion based on B180 produced in accordance with ASTM class SS.
  • B 70% cationic emulsion based on B180 produced in accordance with ASTM class CSS.
  • the mixtures can be sacked in strong plastic sacks marked with an A for the anionic mixture and a C for the cationic mixture.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Road Paving Structures (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Compte tenu des inconvénients propres à l'application classique à chaud du bitume, on s'est efforcé de remplacer cette méthode par une technique à froid qui consiste à appliquer un mélange de pierres et d'émulsion de liant bitumineux tenant lieu de liant ('rupture') une fois le matériau posé. Cela requiert un degré de planification et une capacité de production élevée dans les usines de bitume et par ailleurs, l'utilisation de la technique à froid est limitée en ce qui concerne la haute viscosité souhaitable pour le liant bitumineux. L'invention se rapporte à un procédé qui consiste à utiliser deux groupes de matériaux dont la préparation est distincte et que l'on peut stocker afin de prélever à tout moment la partie nécessaire aux applications. Il suffit de mélanger ces fractions avant l'application, de sorte que les émulsions de liant respectives agissent comme agents de rupture l'une par rapport à l'autre. Il est possible d'utiliser du bitume à haute viscosité dans les deux émulsions. On décrit également la fabrication et la distribution des produits en deux groupes séparés en tant qu'aspects concernant les usines.
PCT/DK1996/000224 1995-05-24 1996-05-24 Procede relatif a la preparation et a la production de materiaux bitumineux pour une application a froid dans les travaux de voirie ou pavage WO1996037660A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP96916016A EP0828895A1 (fr) 1995-05-24 1996-05-24 Procede relatif a la preparation et a la production de materiaux bitumineux pour une application a froid dans les travaux de voirie ou pavage
AU58930/96A AU698694B2 (en) 1995-05-24 1996-05-24 A method of preparing and producing asphalt materials to be laid out as a cold road construction or paving material
NO975395A NO975395L (no) 1995-05-24 1997-11-24 Fremgangsmåte for preparering og fremstilling av asfaltmaterialer som skal legges ut som en kald veikonstruksjon eller slitasjelagsmateriale

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK0600/95 1995-05-24
DK060095A DK60095A (da) 1995-05-24 1995-05-24 Fremgangsmåde til koldfremstilling af asfaltmaterialer for koldudlægning af samme

Publications (1)

Publication Number Publication Date
WO1996037660A1 true WO1996037660A1 (fr) 1996-11-28

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ID=8095409

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1996/000224 WO1996037660A1 (fr) 1995-05-24 1996-05-24 Procede relatif a la preparation et a la production de materiaux bitumineux pour une application a froid dans les travaux de voirie ou pavage

Country Status (6)

Country Link
EP (1) EP0828895A1 (fr)
AU (1) AU698694B2 (fr)
CA (1) CA2222072A1 (fr)
DK (1) DK60095A (fr)
NO (1) NO975395L (fr)
WO (1) WO1996037660A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2766736A1 (fr) * 1997-07-29 1999-02-05 Centre Nat Rech Scient Procede pour preparer des emulsions concentrees en une phase de viscosite elevee dont des emulsions de bitumes
WO2001002491A1 (fr) * 1999-07-05 2001-01-11 Colas Emulsion de bitume et de resine chargee pour revetement routier
AU743067B2 (en) * 2000-03-14 2002-01-17 Samkirst No. 20 Pty Ltd Cold-mix asphalt
CN102505600A (zh) * 2011-10-28 2012-06-20 江阴泰富沥青有限公司 一种冷再生沥青路面的现场施工方法
WO2012169890A1 (fr) 2011-06-07 2012-12-13 Latexfalt B.V. Émulsions bitumineuses
CN104818659A (zh) * 2015-04-13 2015-08-05 上海理工大学 水泥板现场粒化再生施工工艺
AT519993A1 (de) * 2017-05-19 2018-12-15 Oesterreichische Vialit Ges M B H Bituminöser Baustoff
CN110564166A (zh) * 2019-08-23 2019-12-13 武汉市市政建设集团有限公司 一种沥青冷补料用冷补剂的制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4978393A (en) * 1987-11-17 1990-12-18 Rene Maheas Process for the manufacture of stockable dense road asphalts
EP0524031A1 (fr) * 1991-07-19 1993-01-20 Colas S.A. Procédé d'obtention à froid d'enrobés denses bitumineux
WO1993009295A1 (fr) * 1991-10-30 1993-05-13 Leo Hove Procede de preparation d'un beton emulsionne ou asphaltique utilise comme materiau pour routes
WO1996004427A1 (fr) * 1994-07-29 1996-02-15 Esso Societe Anonyme Française Procede de preparation d'un enrobe a froid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4978393A (en) * 1987-11-17 1990-12-18 Rene Maheas Process for the manufacture of stockable dense road asphalts
EP0524031A1 (fr) * 1991-07-19 1993-01-20 Colas S.A. Procédé d'obtention à froid d'enrobés denses bitumineux
WO1993009295A1 (fr) * 1991-10-30 1993-05-13 Leo Hove Procede de preparation d'un beton emulsionne ou asphaltique utilise comme materiau pour routes
WO1996004427A1 (fr) * 1994-07-29 1996-02-15 Esso Societe Anonyme Française Procede de preparation d'un enrobe a froid

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU751953B2 (en) * 1997-07-29 2002-09-05 Centre National De La Recherche Scientifique (C.N.R.S.) Method for preparing concentrated and emulsions calibrated in a highly viscous phase, in particular bitumen emulsions
WO1999006139A1 (fr) * 1997-07-29 1999-02-11 Centre National De La Recherche Scientifique (C.N.R.S.) Procede pour preparer des emulsions concentrees et calibrees en une phase de viscosite elevee dont des emulsions de bitumes
US6602917B1 (en) 1997-07-29 2003-08-05 Centre National De La Recherche Scientifique (C.N.R.S.) Method for preparing concentrated and emulsions calibrated in a highly viscous phase, in particular bitumen emulsions
FR2766736A1 (fr) * 1997-07-29 1999-02-05 Centre Nat Rech Scient Procede pour preparer des emulsions concentrees en une phase de viscosite elevee dont des emulsions de bitumes
US6559206B1 (en) 1999-07-05 2003-05-06 Colas Bitumen and filled resin emulsion for road surfacing emulsion
FR2796075A1 (fr) * 1999-07-05 2001-01-12 Colas Sa Emulsion de bitume et de resine chargee pour revetement routier
WO2001002491A1 (fr) * 1999-07-05 2001-01-11 Colas Emulsion de bitume et de resine chargee pour revetement routier
AU743067B2 (en) * 2000-03-14 2002-01-17 Samkirst No. 20 Pty Ltd Cold-mix asphalt
WO2012169890A1 (fr) 2011-06-07 2012-12-13 Latexfalt B.V. Émulsions bitumineuses
CN102505600A (zh) * 2011-10-28 2012-06-20 江阴泰富沥青有限公司 一种冷再生沥青路面的现场施工方法
CN104818659A (zh) * 2015-04-13 2015-08-05 上海理工大学 水泥板现场粒化再生施工工艺
AT519993A1 (de) * 2017-05-19 2018-12-15 Oesterreichische Vialit Ges M B H Bituminöser Baustoff
AT519993B1 (de) * 2017-05-19 2021-10-15 Oesterreichische Vialit Ges M B H Bituminöser Baustoff
CN110564166A (zh) * 2019-08-23 2019-12-13 武汉市市政建设集团有限公司 一种沥青冷补料用冷补剂的制备方法

Also Published As

Publication number Publication date
CA2222072A1 (fr) 1996-11-28
NO975395D0 (no) 1997-11-24
AU5893096A (en) 1996-12-11
AU698694B2 (en) 1998-11-05
EP0828895A1 (fr) 1998-03-18
DK60095A (da) 1996-11-25
NO975395L (no) 1998-01-23

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