EP1396580B1 - Verfahren zum Verstärken von Strassenoberflächen, verstärkte Strassenoberfläche und Asphaltbeton dafür - Google Patents

Verfahren zum Verstärken von Strassenoberflächen, verstärkte Strassenoberfläche und Asphaltbeton dafür Download PDF

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Publication number
EP1396580B1
EP1396580B1 EP03077780A EP03077780A EP1396580B1 EP 1396580 B1 EP1396580 B1 EP 1396580B1 EP 03077780 A EP03077780 A EP 03077780A EP 03077780 A EP03077780 A EP 03077780A EP 1396580 B1 EP1396580 B1 EP 1396580B1
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EP
European Patent Office
Prior art keywords
road surface
layer
asphalt concrete
open
road
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Expired - Lifetime
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EP03077780A
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English (en)
French (fr)
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EP1396580A2 (de
EP1396580A3 (de
Inventor
Matheus Franciscus Antonius Maria Van Hoof
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Janssen de Jong Infra BV
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Janssen de Jong Infra BV
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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
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
    • E01C7/358—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with a combination of two or more binders according to groups E01C7/351 - E01C7/356
    • 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
    • E01C11/00—Details of pavings
    • E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
    • E01C11/224—Surface drainage of streets
    • E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
    • E01C11/226—Coherent pavings
    • 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
    • E01C19/46—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 and placing the materials, e.g. slurry seals

Definitions

  • the invention relates to a method for strengthening a road surface with an open surface structure, such as very open asphalt concrete (ZOAB), comprising of applying a layer of asphalt concrete to the road surface, wherein the road surface respectively the asphalt concrete has a grain size distribution around an average such that an open surface structure is formed, wherein the average of the grain size distribution in the road surface is at least substantially a factor of four greater compared to the layer.
  • ZOAB very open asphalt concrete
  • NL-C-1016026 From NL-C-1016026 is known a method wherein a road surface is strengthened with an aggregate of fine-grained material and binder.
  • the d50 (median of the grain size distribution) for the fine-grained material lies between 0.65 and 3.5 mm and is a factor of five smaller than the median of the road surface.
  • the grain size distribution of the aggregate to be applied is narrow, 90% of the grains having a grain diameter lying between 0.8 x d50 and 1.2 x d50.
  • the plastic binder forms 2 to 8% of the total filling material. The combination of this aggregate and an existing road surface does not fulfil standard requirements.
  • the object of the invention is to provide a method which improves the known method.
  • a bituminous emulsion is known as such and in a substantially homogeneous mixture of water and bitumen.
  • the bitumen floats like small globules in the water.
  • the stability of the emulsion is broken down. Bitumen and water separate out again into the two original liquids, wherein the water eventually evaporates.
  • the ratio of the percentage of water and bitumen can vary and lies between 40 and 80%, preferably 50-70%, and in a further preferred embodiment between 63-65%.
  • the speed of the breakdown process can be adapted to the application.
  • Preferably chosen is a stable bituminous emulsion which breaks down slowly. Breakdown of the bituminous emulsion occurs on contact with mineral aggregate. The aggregate ends the equilibrium. Bitumen is deposited onto the aggregate, thereby creating a bitumen film. The stones are adhered to each other on the contact surfaces.
  • bitumen functions better than plastic binders.
  • the skilled person will automatically use a plastic binder with enhanced adhesive properties, this to keep down the percentage of binder in the layer of asphalt concrete to be applied and to be able to guarantee the open structure of the mix after curing.
  • bitumen can be used as binder. The use of bitumen also results in a considerable cost-saving.
  • the material of the layer of asphalt concrete will be substantially taken up into the open surface structure of the road surface.
  • the new layer of asphalt concrete has an average grain size which is at least four times finer than the average of the underlying road surface, and is therefore taken up into the upper surface of the underlying road surface.
  • the invention differs here from the prior art, wherein a layer is arranged on the existing road surface. The difference in grain size is such that the second layer can be taken up into the old road surface, also for instance partially into the hollow space of the road surface.
  • the upper layer in particular of an existing road surface is strengthened, consolidated or preserved using the invention. Owing to the layer of asphalt concrete many more contact surfaces will occur in the uppermost layer of the road surface, whereby the upper layer becomes stronger and can better withstand textural damage or plucking. In addition, particularly the noise reduction in the road surface with an open surface structure is improved compared to prior art.
  • the term road surface is understood to mean the whole of the first ZOAB layer.
  • the upper layer hereof constitutes the uppermost centimetres.
  • the invention is particularly suitable for, but not limited to, repairing or strengthening an older road surface.
  • the invention is a maintenance or preservation technique for a road surface with an open surface structure or texture.
  • the open surface structure of the new layer of asphalt concrete is less open than the open surface structure of the old road surface.
  • the total water-transmitting capacity of the aggregate of road surface and layer will logically decrease to a limited extent relative to the capacity of a non-strengthened road surface.
  • the layer of asphalt concrete is arranged in the upper layer of the road surface, close to the upper surface, whereby for water drainage through the road surface use can also be made of the pumping effect of the wheels travelling over the road surface. Water will be pressed through the aggregate of road surface and layer, so that it can be drained through the lower layers of the road surface.
  • the sound-damping properties of the older ZOAB road surface are however improved considerably by arranging the layer of asphalt concrete according to the invention.
  • the sound produced by traffic travelling over the road surface is greatly reduced by arranging the layer. This is particularly the result of filling the plucked-out parts in the road surface with the layer.
  • the average grain size of the road surface is preferably at least six times larger than the average grain size of the second layer.
  • the grains are hereby taken up better in a road surface.
  • the average grain size of the road surface is at least eight times larger than the average grain size of the layer.
  • the layer is arranged substantially in the road surface.
  • the road surface is hereby strengthened and the sound-damping properties are further regenerated or retained. Remnants of the applied layer protruding above the existing road surface are removed and swept away after application.
  • a layer of 0 - 0.8 centimetre is arranged on the road surface.
  • the road surface with an open surface structure can hereby be repaired with very little asphalt concrete.
  • the road surface is preferably filled with the asphalt concrete substantially up to an upper surface of the road surface.
  • the upper surface of a road surface is the top surface of that road surface.
  • the spaces in the open surface structure at the upper surface of the road surface, or the plucked-out parts formed for instance by a part of the upper surface of the road surface coming loose and being removed, are hereby filled and strengthened. It is hereby possible to postpone for at least a number of years the complete replacement of the road surface with an open surface structure. It is less expensive to apply the method according to the invention than to completely replace the road surface with the open surface structure.
  • Filling of the road surface with the asphalt concrete can be carried out actively, for instance by making use of a roller which presses the layer of asphalt concrete into the road surface.
  • the asphalt concrete can be taken up into the road surface by being driven therein by traffic during normal road use.
  • a layer of asphalt concrete substantially of less than 0.8 centimetre, and preferably 0.7 centimetre in thickness, is preferably arranged temporarily on the road surface and then sinks into the upper layer of the existing road surface. Such a layer cannot be seen as an extra layer (double-layered) on the existing road surface.
  • the road surface is hereby strengthened using a very small quantity of asphalt concrete.
  • Use is preferably made of asphalt concrete comprising bitumen (emulsion), cement and a road metal such that an open surface structure is formed.
  • bitumen emulsion
  • cement is added as catalyst for the emulsion when the layer is applied. Cement breaks down emulsifier after the application, so that bitumen can flow together again.
  • the invention also relates to asphalt concrete for strengthening a road surface with an open surface structure, such as very open asphalt concrete (ZOAB), comprising binder, cement and a road metal such that an open surface structure is formed, wherein the road metal of the asphalt concrete has substantially a grain size distribution of 0/3 mm or 1/3 mm.
  • ZOAB very open asphalt concrete
  • Such asphalt concrete is known and is used to arrange a layer with an open surface structure on a substrate which optionally also defines an open surface structure.
  • the asphalt concrete preferably comprises a modified bituminous emulsion provided with a polymer-modified bitumen. Improved properties are hereby obtained, for instance for adhesion, elasticity, flexibility, flow and increased lifespan.
  • the original bitumen can be mixed with SBS or EVA, whereafter the polymer-modified binder is emulsified.
  • a quantity of polymer emulsion (latex) is added to a standard emulsion and then mixed to form an homogeneous whole.
  • the emulsion can be modified such that after drying there occurs no adhesion of the bitumen to tyres in traffic.
  • the median of the grain size can be taken instead of the average grain size.
  • the median of the road surface and that of the layer to be applied also differ by at least a factor of four.
  • Figure 1 shows a train 1 in the form of a truck 2 and a trailer 3 provided with three compartments 4-6 in which the supplies for the layer of asphalt concrete are arranged.
  • Compartment 4 comprises different types of bituminous emulsion
  • compartment 5 comprises different road metals.
  • Compartment 6 comprises cement.
  • Train 1 can advance as according to arrow 7 over a road surface 8.
  • Road surface 8 is a road surface with an open surface structure, for instance ZOAB.
  • This ZOAB is for instance new, old or even damaged. According to the method of the invention this ZOAB can be strengthened so as to counter plucking.
  • Train 1 is provided for this purpose on the rear with an application device 9 which, at least without the specific modifications according to the invention, is per se known for emulsion asphalt concrete.
  • Compartments 4,5,6 comprise cement, minerals, water and/or bituminous emulsion. There can be different compartments with minerals, for instance pre-sorted road metals. These can be mixed during use, whereby the grain size distribution can be adjusted. These substances from the compartments are mixed when fed to the application device 9 arranged on train 1. Application device 9 is controlled in each case such that a layer of asphalt concrete is dispensed which has an open surface structure.
  • Application device 9 applies a determined pressure to the dispensed layer.
  • the pressure is adjustable and depends on the precise composition of the product to be applied. Determining factors are the stability of the bituminous emulsion and the average grain size.
  • the mixing of the at least three components of the layer to be applied takes place in the application device.
  • the components of the asphalt concrete are optionally mixed even further between two rollers 10, 11 so as to form an homogenous mass. This takes place under hood 12.
  • the layer is then applied to the underlying road surface 8.
  • the contact surface of the layer of asphalt concrete to be applied in the composition according to the invention is shorter than the contact surface that is usual for other repair techniques, such as in the case of emulsion asphalt.
  • the known application device 9 is provided for this purpose with a beam 14 which is mounted on hood 12 for sliding as according to arrow 13 and which can vary, and particularly reduce, the size of the contact surface with road surface 8.
  • the contact surface is preferably halved.
  • bituminous emulsion of water and bitumen mixture which also includes a polymerized modified additive.
  • bituminous emulsion is per se known and is used for cold application of a layer of normal asphalt.
  • the amount of filler in the layer of asphalt concrete to be applied is small.
  • Fillers are the minerals of the smallest screen size, for instance smaller than 0.063 mm.
  • the percentage of filler in the layer of asphalt concrete according to the invention is less than 6,5% of the total mixture of minerals and more particularly less than 5.1%.
  • bitumen percentage for a road metal mixture according to the invention is for instance 3%. Instead of this 3%, use is made of more bitumen, for instance a mass percentage of 3.5% to 6.5%.
  • the composition of the layer to be applied will depend on the underlying road surface.
  • a known road surface of ZOAB 0/16 the composition below is preferably used for the layer to be applied.
  • the table below gives the grading curve distribution for the grain size.
  • the average grain size is ⁇ 1.8 mm.
  • the ZOAB 0/16 road surface has an average grain size of 11 mm.
  • the embodiments below are examples.
  • composition of the layer is: Basic composition Dutch road metal 98 % Portland cement 2 % to 100% minerals is added: Emulsion 10 % of the composition of minerals and emulsion Emulsifier is: 0.2 % Bitumen is: 6.0 % Respectively Basalt 1/3 98 % Portland cement 2 % to 100% minerals is added: Emulsion 10 % of the composition of minerals and emulsion Emulsifier is: 0.2 % Bitumen (corrected for density) is: 5.7 %
  • Figure 3 shows a cross-section of a road surface with an open surface structure.
  • Figure 3 is a schematic representation thereof. Twelve stone granules 20 are shown. The shown cross-section is very schematic and does not correspond to reality. A choice has however been made to give a cross-sectional view which provides a better insight. Shown is that the road surface has a very regular structure, wherein the road surface comprises grains of a reasonably uniform size. Each of the grains 20 is at least partially enclosed by a bitumen film 21 which has hardened in the usual situation. The bitumen adheres in particular around the grain 20. The bitumen also provides bindings between the respective grains. Stones 20 and bitumen 21 form the existing road surface.
  • the upper layer of the (old) road surface with the open surface structure is rather less firmly connected to the other grains.
  • This is a known given in a road surface with an open surface structure such as ZOAB, wherein plucking of the upper surface can occur. Owing to the traffic travelling over the upper layer of the road surface, the bitumen film which encloses grains 20 in the first instance has practically disappeared from the grains in the upper layer of the road surface.
  • the upper surface 22 of the road surface formed by grains 20 and bitumen 21 is shown with dashed line 22.
  • a layer of asphalt concrete according to the invention is arranged a little above and substantially below the upper surface 22, wherein the average of the grain size distribution of this asphalt concrete is a factor of 10 smaller than the average of the grain size distribution of the road surface.
  • Grains 23 can hereby penetrate even into the open surface structure of the road surface.
  • the bitumen of the asphalt concrete layer once again forms a film around grains 23, whereby an open surface structure is created in the layer of asphalt concrete. There is in fact created a layer-within-layer structure of a larger open surface structure and a smaller open surface structure formed by respectively the road surface and the layer of asphalt concrete.
  • bitumen of the layer of asphalt concrete has penetrated into the road surface and that the open surface structure of the road surface has been partly filled.
  • the bitumen of the layer will form contact surfaces with the grains 20 already present.
  • the upper layer of the road surface is hereby strengthened/consolidated/preserved, and the upper layer will display less plucking.
  • bituminous emulsion globules 27 Use is made of a layer of asphalt concrete comprising bituminous emulsion globules 27. These latter comprise inter alia water which, during the breakdown process, will be released under the influence of pressure from traffic or from a roller, or due to UV radiation, and wherein the bitumen forms a film around the grains.
  • the greater part of the bituminous emulsion according to figure 3 has already been broken up.
  • a number of separate grains 28 are still lying loosely above the layer of asphalt concrete. By driving with a roller over the road surface or as a result of the traffic travelling over the road surface, these loose grains 28 are pressed down and the bituminous emulsion globules will burst, whereby grains 28 are provided with a bituminous layer.
  • the upper layer of the road surface will be further filled with the layer of asphalt concrete with the smaller average grain size, and the cavities of the open surface structure of the road surface will be further filled.
  • the cavities between grains 30 and 31 of the road surface are further filled close to 32.
  • the upper layer a of the road surface which according to figure 5 is for instance 1 centimetre, is filled with the smaller open surface structure of the applied layer of asphalt concrete. This layer is arranged in the upper layer of the road surface.
  • the upper grains of the road surface will now come loose less quickly. Grain 31 still forms the top of the road surface.
  • the other grains 30 of the road surface are almost fully covered with the new layer.
  • Figure 6 shows the detail according to arrow VI.
  • figure 5 once again shows the situation very schematically, wherein a non-realistic cross-section of the road surface and the layer is shown. In reality a cross-section will give a much more varied picture of the size of a stone, despite the fact that the grain size distribution in both the road surface and the layer varies little.
  • the upper layer 34 is filled to a depth a.
  • the strengthening of the upper layer is considerable since the upper grains of the road surface form a large number of connections with the bitumen 35 of the layer of asphalt concrete.
  • Figure 7 shows a schematic cross-section of a road surface in which the layer-within-layer composition of two open surface structures can be recognized.
  • the surface of the road has herein been affected considerably since one of the large grains of the road surface which lay on the surface has come loose.
  • this hole at 40 has been filled with a layer of asphalt concrete with an open surface structure and an average grain size which is a factor of 10 smaller than the average grain size of the road surface.
  • the layer-within-layer structure can once again be identified.
  • the aggregate of the open surface structures is water-permeable, not only because of the open surface structure but also because of the pumping action of traffic travelling over the upper surface 41 of the road surface according to the invention.
  • the layer according to the invention can also protrude considerably above the existing road surface.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Road Repair (AREA)

Claims (9)

  1. Verfahren zum Verstärken einer Straßenoberfläche mit einer offenen Oberflächenstruktur, wie beispielsweise sehr offenem Asphaltbeton (ZOAB), umfassend das Anordnen einer Schicht aus Asphaltbeton auf der Straßenoberfläche, wobei die Straßenoberfläche bzw. der Asphaltbeton ein Gemisch aus Mineralien einer derartigen Korngrößenverteilung etwa im Mittel hat, daß eine offene Oberflächenstruktur ausgebildet ist, wobei das Mittel der Korngrößenverteilung in der Straßenoberfläche wenigstens im wesentlichen um einen Faktor Vier größer ist als das der Schicht, gekennzeichnet durch Auftragen einer Schicht aus Asphaltbeton, der eine Bitumenemulsion aufweist und wobei der Anteil an Mineralien der kleinsten Siebklasse weniger als 6,5 % des Gesamtgemischs an Mineralien ist.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die mittlere Korngröße der Straßenoberfläche wenigstens acht Mal größer ist als die mittlere Korngröße der Schicht.
  3. Verfahren nach Anspruch 1 oder 2, gekennzeichnet durch im wesentlichen Anordnen der Schicht in der Straßenoberfläche.
  4. Verfahren nach einem der Ansprüche 1-3, gekennzeichnet durch Füllen der Straßenoberfläche mit der Schicht aus Asphaltbeton im wesentlichen bis hin zu einer oberen Oberfläche der Straßenoberfläche.
  5. Verfahren nach einem der Ansprüche 1-4, gekennzeichnet durch Auftragen der Schicht auf die Straßenoberfläche, wobei Bestandteile der Schicht vor dem Auftragen gemischt werden.
  6. Verfahren nach einem der Ansprüche 1-5, gekennzeichnet durch Auftragen einer Schicht aus Asphaltbeton im wesentlichen einer Dicke von weniger als 0,8 cm.
  7. Verfahren nach einem der vorstehenden Ansprüche, gekennzeichnet durch ein Walzen der Schicht in die Straßenoberfläche.
  8. Asphaltbeton zum Verstärken einer Straßenoberfläche mit einer offenen Oberflächenstruktur wie beispielsweise sehr offenem Asphaltbeton (ZOAB), umfassend Binder, Zement und ein Straßenmetall mit einer derartigen Zusammensetzung, daß eine offene Oberflächenstruktur ausgebildet wird, wobei das Straßenmetall im wesentlichen eine 0,1/3 mm Korngrößenverteilung hat, dadurch gekennzeichnet, daß der Asphaltbeton ein Emulsionsasphaltbeton ist, der eine Bitumenemulsion umfasst und wobei der Anteil an Mineralien der kleinsten Siebklasse weniger als 6,5 % des Gesamtgemischs an Mineralien ist.
  9. Asphaltbeton nach Anspruch 8, dadurch gekennzeichnet, daß der Asphaltbeton eine modifizierte Bitumenemulsion umfasst, die mit einem Gummi- oder Kunststoffadditiv versehen ist.
EP03077780A 2002-09-05 2003-09-03 Verfahren zum Verstärken von Strassenoberflächen, verstärkte Strassenoberfläche und Asphaltbeton dafür Expired - Lifetime EP1396580B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1021404 2002-09-05
NL1021404A NL1021404C2 (nl) 2002-09-05 2002-09-05 Werkwijze voor het versterken van een wegdek, een versterkt wegdek en een asfaltbeton daarvoor.

Publications (3)

Publication Number Publication Date
EP1396580A2 EP1396580A2 (de) 2004-03-10
EP1396580A3 EP1396580A3 (de) 2004-12-22
EP1396580B1 true EP1396580B1 (de) 2006-06-07

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EP03077780A Expired - Lifetime EP1396580B1 (de) 2002-09-05 2003-09-03 Verfahren zum Verstärken von Strassenoberflächen, verstärkte Strassenoberfläche und Asphaltbeton dafür
EP03077779A Expired - Lifetime EP1396579B1 (de) 2002-09-05 2003-09-03 Verfahren zum Verstärken von Strassenoberflächen, verstärkte Strassenoberfläche und Asphaltbeton dafür

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EP03077779A Expired - Lifetime EP1396579B1 (de) 2002-09-05 2003-09-03 Verfahren zum Verstärken von Strassenoberflächen, verstärkte Strassenoberfläche und Asphaltbeton dafür

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EP (2) EP1396580B1 (de)
AT (2) ATE329089T1 (de)
DE (2) DE60305815T2 (de)
NL (1) NL1021404C2 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9186645B2 (en) 2013-09-10 2015-11-17 Fermi Research Alliance, Llc Method and system for in-situ cross linking of polymers, bitumen and similar materials to increase strength, toughness and durability via irradiation with electron beams from mobile accelerators
US9340931B2 (en) 2013-09-10 2016-05-17 Fermi Research Alliance, Llc Method and system for in-situ cross linking of polymers, bitumen and similar materials to increase strength, toughness and durability via irradiation with electron beams from mobile accelerators
US11123921B2 (en) 2018-11-02 2021-09-21 Fermi Research Alliance, Llc Method and system for in situ cross-linking of materials to produce three-dimensional features via electron beams from mobile accelerators
US11224918B2 (en) 2018-01-19 2022-01-18 Fermi Research Alliance, Llc SRF e-beam accelerator for metal additive manufacturing

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Publication number Priority date Publication date Assignee Title
CN104389255A (zh) * 2014-12-08 2015-03-04 中国人民解放军72719部队 一种沥青路铺设方法
NL2014062B1 (nl) * 2014-12-24 2016-09-30 Heijmans N V Werkwijze en inrichting voor het met een vloeibaar middel behandelen van een asfaltconstructie.
WO2024086323A1 (en) * 2022-10-21 2024-04-25 Fermi Research Alliance, Llc Shielded irradiator vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2674549B1 (fr) * 1991-03-29 1998-10-02 Colas Sa Bande de chaussee habituellement non soumise a la circulation, telle qu'une bande d'arret d'urgence.
NL1016026C2 (nl) * 2000-08-25 2002-02-26 Hollandsche Betongroep Nv Werkwijze voor het aanbrengen van een verharding alsmede verharding.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9186645B2 (en) 2013-09-10 2015-11-17 Fermi Research Alliance, Llc Method and system for in-situ cross linking of polymers, bitumen and similar materials to increase strength, toughness and durability via irradiation with electron beams from mobile accelerators
US9340931B2 (en) 2013-09-10 2016-05-17 Fermi Research Alliance, Llc Method and system for in-situ cross linking of polymers, bitumen and similar materials to increase strength, toughness and durability via irradiation with electron beams from mobile accelerators
US11224918B2 (en) 2018-01-19 2022-01-18 Fermi Research Alliance, Llc SRF e-beam accelerator for metal additive manufacturing
US11123921B2 (en) 2018-11-02 2021-09-21 Fermi Research Alliance, Llc Method and system for in situ cross-linking of materials to produce three-dimensional features via electron beams from mobile accelerators
US11878462B2 (en) 2018-11-02 2024-01-23 Fermi Research Alliance, Llc Infrastructure-scale additive manufacturing using mobile electron accelerators

Also Published As

Publication number Publication date
EP1396580A2 (de) 2004-03-10
DE60305815T2 (de) 2006-11-30
EP1396580A3 (de) 2004-12-22
ATE329089T1 (de) 2006-06-15
EP1396579B1 (de) 2006-05-24
EP1396579A3 (de) 2004-12-15
DE60305396T2 (de) 2007-05-03
NL1021404C2 (nl) 2003-10-17
ATE327386T1 (de) 2006-06-15
DE60305815D1 (de) 2006-07-20
EP1396579A2 (de) 2004-03-10
DE60305396D1 (de) 2006-06-29

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