EP0009272B1 - Procédé pour la stabilisation d'ouvrages hydrauliques en utilisant un mélange bitumineux à creux communicants et une chute utilisée dans ce procédé - Google Patents

Procédé pour la stabilisation d'ouvrages hydrauliques en utilisant un mélange bitumineux à creux communicants et une chute utilisée dans ce procédé Download PDF

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Publication number
EP0009272B1
EP0009272B1 EP19790200480 EP79200480A EP0009272B1 EP 0009272 B1 EP0009272 B1 EP 0009272B1 EP 19790200480 EP19790200480 EP 19790200480 EP 79200480 A EP79200480 A EP 79200480A EP 0009272 B1 EP0009272 B1 EP 0009272B1
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EP
European Patent Office
Prior art keywords
pipe
hopper
bituminous mixture
mixture
course
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
EP19790200480
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German (de)
English (en)
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EP0009272A1 (fr
Inventor
Gerardus Rinkel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bitumarin BV
Original Assignee
Bitumarin BV
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 Bitumarin BV filed Critical Bitumarin BV
Publication of EP0009272A1 publication Critical patent/EP0009272A1/fr
Application granted granted Critical
Publication of EP0009272B1 publication Critical patent/EP0009272B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/128—Coherent linings made on the spot, e.g. cast in situ, extruded on the spot
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/121—Devices for applying linings on banks or the water bottom

Definitions

  • Hydraulic works such as dikes, dams, jetties and breakwaters, are usually subject to severe attack by waves and currents. Fluctuating water levels may also cause loads on the lining of the dam or dike body.
  • the slopes are lined with basalt or concrete blocks or with heavy stones.
  • linings of normally available stones are not always stable enough to withstand the heavy attack by waves and currents. Stabilization against such attack can be obtained by grouting with bitumen or bituminous mixtures so that a water-impermeable structure is obtained.
  • the build-up of a water pressure under the revetment may be caused by the tide, wave suction and as a result of ground water flow.
  • the invention relates to the use of bituminous mixtures for the stabilization against wave and current action of bottom and bank linings of dikes, canals, dams, harbours, beds formed by dropping aggregate, etc. and to the method for applying said mixtures, in such a way that the build-up of a water pressure under the revetment (designated below as lining or covering course) is prevented.
  • the envisaged object may be achieved in a more effective way by using an open mixture of mastic and mineral aggregate.
  • mastic is meant here a mixture of bitumen and filler.
  • Open bituminous mixtures such as for example sand asphalt, generally have insufficient flow properties for good penetration between the stones.
  • certain mixtures of round mineral aggregate and mastic indeed exhibit sufficient flow properties.
  • the use of patches may be dispensed with and complete penetration achieved, while appropriate choice of the mineral moreover gives filter properties to the protecting layer.
  • the invention relates to a method for the stabilization of hydraulic works, such as linings on slopes, dikes, dams, beds formed by dropping aggregate, which contain a covering course of stone, said course being penetrated with a bituminous mixture, the bituminous mixture being an open mixture of a mineral aggregate and a mastic asphalt, characterized in that the mineral aggregate contains round gravel, and that the mixture is applied so as to penetrate the covering course completely or substantially completely to provide a continuous or substantially continuous layer of the mixture beneath the covering course.
  • CH-A-496 857 already discloses linings for hydraulic works, which linings consist of an open mixture of bitumen and fine aggregate.
  • linings consist of an open mixture of bitumen and fine aggregate.
  • 2-7% of a low molecular weight polymer to the bitumen is said to be essential.
  • DE-B-1091044 discloses applying a mixture of bitumen, filler, sand and/or gravel under water to stabilize hydraulic works, such as a sub-layer made of gravel, broken stones or other coarse material.
  • a mixture of bitumen, filler, sand and/or gravel under water to stabilize hydraulic works, such as a sub-layer made of gravel, broken stones or other coarse material.
  • the present idea of using an open bituminous mixture containing round gravel and the advantages thereof are not mentioned.
  • the lining of the present invention is preferably at least 30 cm thick and preferably comprises stones having dimensions of at least 20 cm. It is also possible to apply to the bottom a continuous coating of the bituminous mixture, thereby consolidating the subsurface without allowing groundwater pressures to arise.
  • the round gravel which is preferably a round and natural gravel or gravel sand, preferably has dimensions of 0.4-15 mm, in particular 1-8 mm, and is preferably mixed with 4-18% by weight, in particular 6-12% by weight, of mastic asphalt which preferably comprises filler, for example approximately 40-60% by weight, in particular approximately 50% by weight, and approximately 60-40% by weight of bitumen, in particular approximately 50% by weight.
  • a particularly suitable bitumen is road-building bitumen having a penetration of 300-1000, in particular of 500-800 (1/10 mm, 25°C, 5 sec., 100 g); plasticizers, such as a mineral oil, and other additives may also be added, such as, for example, natural rubber or synthetic rubber, for example thermoplastic rubber of the poly- styrene/polyisoprene or polybutadiene/poly- styrene type.
  • the mastic asphalt is prepared separately, and the round, heated and dried gravel is subsequently mixed with the mastic asphalt. After mixing at, for example, 90-140°C the mixture is ready and then preferably contains at least approximately 20% of void volume.
  • the stone course is preferably completely penetrated with this hot mixture.
  • the present bituminous mixture is capable of filling the voids between the stones within a reasonable period of time, if necessary under water by cold flow.
  • the method of applying the bituminous mixture may be carried out with a crane, also under water.
  • the invention also relates to this method as well as to a chute adapted to apply a bituminous mixture under water, comprising a hopper and a pipe adapted to contain the bituminous mixture, characterized in that the upper end of the pipe is connected to the hopper via an airlock, which prevents air from flowing from the pipe to the hopper but allows the bituminous mixture to pass from the hopper to the pipe; and in that means is provided to supply pressurized air to the pipe.
  • the pipe as well as the outlet of the pipe are preferably insulated.
  • the pipe is preferably provided with a pressure relief device of sufficient capacity, preferably comprising a small diameter pipe running parallel with the pipe, the outlet being below the lower extremity of the pipe.
  • This chute comprises a closed hopper containing the concrete, a pipe connected to the lower end of the hopper and an inlet for pressurized air at the upper end of the hopper.
  • DE-B-1091044 discloses a chute for applying a bituminous mixture to a hydraulic works, which chute contains a pipe with an outer skirt which latter one is connected with an inlet for pressurized air. There is no inlet for pressurized air for the (inner) pipe adapted to contain the bituminous mixture, nor is there an airlock at the upper end of the pipe.
  • the present chute Although the water in the pipe is displaced with pressurized air, the difference with the present chute is, that the upper end of the pipe and not the upper end of the (closed) hopper has an inlet for pressurized air. This means that batch-operation, only, is possible with this closed hopper, it having to be filled each time again.
  • the present chute also owing to the airlock, can operate continuously.
  • bituminous mixture is passed in hot condition to just above the point of application as a result of the fact that the water column present in the pipe is displaced by air.
  • bituminous mixture is continuously supplied to the pipe.

Claims (8)

1. Un procédé pour la stabilisation d'ouvrages hydrauliques, tels que des revêtements de talus, digues, barrages, fondations formées en déversant des agrégats, qui contient une assise de parement en pierre, ladite assise étant pénétrée d'un mélange bitumineux, le mélange bitumineux étant un mélange à creux communicants d'un agrégat minéral et d'un mastic d'asphalte, caractérisé en ce que l'agrégat minéral contient du gravier rond et en ce que le mélange est appliqué de façon à pénétrer complètement ou pratiquement complètement l'assise de parement pour former une couche continue ou pratiquement continue du mélange au-dessous de l'assise de parement.
2. Un procédé tel que revendiqué dans la revendication 1, caractérisé en ce que l'assise de parement qui est pénétrée a une épaisseur d'au moins 30 cm et contient des pierres ayant des dimensions d'au moins 20 cm.
3. Un procédé tel que revendiqué dans la revendication 1 ou 2, caractérisé en ce que le gravier rond est un gravier ou un sable graveleux rond et naturel ayant des dimensions de 0,4 à 15 mm.
4. Un procédé tel que revendiqué dans l'une quelconque des revendications précédentes, caractérisé en ce que le mélange bitumineux contient de 4 à 18% en poids de mastic d'asphalte et en ce que le mastic d'asphalte contient approximativement de 40 à 60% en poids de charge et approximativement de 60 à 40% en poids de bitume.
5. Un procédé tel que revendiqué dans l'une quelconque des revendications précédentes, caractérisé en ce que le bitume a un indice de pénétration compris entre 300 et 1000.
6. Un procédé tel que revendiqué dans l'une quelconque des revendications précédentes, caractérisé en ce que le mélange bitumineux a un volume de vides d'au moins 20%.
7. Un procédé tel que revendiqué dans l'une quelconque des revendications précédentes, caractérisé en ce que l'assise de parement est sous l'eau et en ce qu'on utilise un tuyau (5) dans lequel la colonne d'eau présente est chassée à l'aide d'une pression d'air, l'extrémité supérieure du tuyau étant raccordée à une trémie (1), avec interposition d'un sas pneumatique (2) qui empêche l'air de s'écouler du tuyau jusqu'à la trémie mais permet au mélange bitumineux de passer de la trémie jusqu'au tuyau.
8. Une chute destinée en particulier à être utilisée dans le procédé de l'une quelconque des revendications précédentes, conçue pour appliquer un mélange bitumineux sous l'eau comprenant une trémie (1) et un tuyau (5) conçus pour contenir le mélange bitumineux, caractérisée en ce que l'extrémité supérieure du tuyau (5) est raccordée à la trémie, avec interposition d'un sas pneumatique (2) qui empêche l'air de s'écouler du tuyau jusqu'à la trémie mais permet au mélange bitumineux de passer de la trémie jusqu'au tuyau, et en ce que des moyens (3) sont prévus pour fournir de l'air comprimé au tuyau (5).
EP19790200480 1978-09-14 1979-08-31 Procédé pour la stabilisation d'ouvrages hydrauliques en utilisant un mélange bitumineux à creux communicants et une chute utilisée dans ce procédé Expired EP0009272B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7809351A NL7809351A (nl) 1978-09-14 1978-09-14 Open bitumineuze mengsels voor toepassing bij water- bouwkundige werken.
NL7809351 1978-09-14

Publications (2)

Publication Number Publication Date
EP0009272A1 EP0009272A1 (fr) 1980-04-02
EP0009272B1 true EP0009272B1 (fr) 1982-12-22

Family

ID=19831535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790200480 Expired EP0009272B1 (fr) 1978-09-14 1979-08-31 Procédé pour la stabilisation d'ouvrages hydrauliques en utilisant un mélange bitumineux à creux communicants et une chute utilisée dans ce procédé

Country Status (6)

Country Link
EP (1) EP0009272B1 (fr)
JP (1) JPS5539600A (fr)
DE (1) DE2964359D1 (fr)
DK (1) DK380779A (fr)
ES (1) ES484121A1 (fr)
NL (1) NL7809351A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040876A3 (fr) * 1980-05-23 1982-05-12 Bitumarin B.V. Procédé et appareil pour l'application sous l'eau de matériaux, notamment de mélanges bitumineux
DE102006059478B3 (de) * 2006-12-14 2008-02-21 Technische Universität Bergakademie Freiberg Formstabile Blöcke zum Abdichten von Strecken im Salzgestein sowie Einbauverfahren hierfür

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR501636A (fr) * 1919-07-12 1920-04-20 Edouard Louis Hocquart Système et appareils pour le coulage du béton sous l'eau
DE1091044B (de) * 1956-08-06 1960-10-13 Gerrit Kruk Verfahren und Vorrichtung zum Einbau von bituminoesen Massen, wie Asphalt oder Asphalt-Mineral-Gemischen, unter Wasser
DE1128353B (de) * 1958-01-03 1962-04-19 Bataafsche Petroleum In fluessigem Zustande aufzutragende bituminoese Masse fuer Wasserbauarbeiten
DE1962852A1 (de) * 1968-12-16 1970-07-23 Bitumarin Nv Verfahren zur Stabilisierung von Wasserbauwerken mit Hilfe bituminoeser Gemische
CH496857A (de) * 1967-11-02 1970-09-30 Asphalt Und Tiefbau Gmbh Deuts Wasserdurchlässige Deckschicht für Kanalwandungen

Also Published As

Publication number Publication date
DK380779A (da) 1980-03-15
NL7809351A (nl) 1980-03-18
EP0009272A1 (fr) 1980-04-02
DE2964359D1 (en) 1983-01-27
ES484121A1 (es) 1980-09-01
JPS5539600A (en) 1980-03-19

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