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EP2379667A1 - Pâte d'étanchéité - Google Patents

Pâte d'étanchéité

Info

Publication number
EP2379667A1
EP2379667A1 EP09756518A EP09756518A EP2379667A1 EP 2379667 A1 EP2379667 A1 EP 2379667A1 EP 09756518 A EP09756518 A EP 09756518A EP 09756518 A EP09756518 A EP 09756518A EP 2379667 A1 EP2379667 A1 EP 2379667A1
Authority
EP
European Patent Office
Prior art keywords
sealing
water
mixture according
mixture
alcohol
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.)
Withdrawn
Application number
EP09756518A
Other languages
German (de)
English (en)
Inventor
Peter Ellenberger
Herbert Egli
Giuseppe Viscomi
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.)
Construction Research and Technology GmbH
Original Assignee
Construction Research and Technology GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41718956&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2379667(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Construction Research and Technology GmbH filed Critical Construction Research and Technology GmbH
Priority to EP09756518A priority Critical patent/EP2379667A1/fr
Publication of EP2379667A1 publication Critical patent/EP2379667A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/001—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00146—Sprayable or pumpable mixtures
    • C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to mixtures, preferably sealing pastes, particularly preferably tailstock sealing pastes and the use of mixtures according to the invention for sealing components and / or construction machines, in particular for temporarily sealing the transition between the tail of a tunnel boring machine and the pipe lining or segmental lining of the tunnel safety.
  • EP-A-1391566 discloses a method of making a sealant layer wherein pressure swellable bentonite is placed in front of a part of a structure to be sealed.
  • the present invention in the field of tunneling technology, especially in tunnel bores by means of a well-designed tunnel boring machine (TBM).
  • TBM tunnel boring machine
  • the gap between the shield of the TBM and the pipe lining or segment lining of the tunnel protection must be sealed with a sealing paste during the tunneling and installation of the tunnel safety device.
  • the sealing paste is usually injected into two annular intermediate spaces, which are fixed by mostly three annular steel brushes at the end of the shield tail of the TBM. Further details on the use of shielding-tailing pastes in tunneling in connection with tunnel boring machines can also be found in DE-A-102006056263.
  • Tail seal greases based on synthetic fats and oils based on the mineral oil mineral are also known. Because of their poor environmental performance, they are less advantageous in applications where the likelihood of contact with groundwater is high.
  • Specific applications of more environmentally friendly sealants (especially with bentonite) in the field of tunnel boring machine technology (TBM technology) are known in particular for sealing the shield tail of a TBM, from the documents DE-A-102006056263, WO01 / 73265 and EP-A-0607053.
  • DE-A-102006056263 describes in this context mixtures of phyllosilicates, in particular bentonite, stabilizers, water, fibers, fillers and a vegetable oil. Alcohol is also mentioned, but it is nowhere mentioned or implied which alcohols are suitable for this, or what task and what effects could be ascribed to the alcohols.
  • WO01 / 73265 a sealing composition is described which can be used especially in emergencies to prevent the penetration of water into the shield tail.
  • the composition of the sealing pastes is similar to that of DE-A-102006056263. Alcohols are not mentioned with the exception of polyvinyl alcohol.
  • EP-A-0607053 describes sealants containing mica, water, fibers and hydrogenated vegetable oil.
  • the sealing pastes of the three abovementioned publications in the field of TBM technology are in need of further improvement with regard to the sealing performance of the materials described therein.
  • the sealing materials should be more resistant to the penetration of water, in particular of water under pressure, from the environment of the tunnel boring machine (groundwater, etc.).
  • the processability in the production of the masses (kneadability) and in particular the pumpability required for use on the construction site should not deteriorate, but should be improved as far as possible.
  • the object is thus to eliminate or reduce the disadvantages of the prior art described above.
  • the goal is to achieve an improvement in the sealing properties while at the same time being easy to process, to achieve good economic efficiency, environmental compatibility and good product yield.
  • a mixture preferably a sealing paste, more preferably a sealant sealant for sealing, preferably against the ingress of water, the transition between shield tail and the pipe lining or tubing lining of the tunnel safety, containing at least one layered silicate, preferably selected from the group bentonite, talc, montmorillonite, kaolinite, illite and / or sepiolite, more preferably bentonite, particularly preferably in an amount of 23 wt .-% to 45% by weight, an alkali metal salt and / or ammonium salt, preferably a carboxylate and at least an alcohol with 1 to 5 hydroxyl groups.
  • a sealing paste more preferably a sealant sealant for sealing, preferably against the ingress of water, the transition between shield tail and the pipe lining or tubing lining of the tunnel safety
  • at least one layered silicate preferably selected from the group bentonite, talc, montmorillonite, kaolinite, illite and / or se
  • the mixture preferably contains branched or unbranched aliphatic alcohols having 1 to 5 hydroxyl groups, more preferably 1 to 3 and most preferably 1 to 2 hydroxyl groups.
  • the aliphatic alcohols preferably have 2 to 24 carbon atoms, more preferably 2 to 7 carbon atoms.
  • the aliphatic alcohols can each branched or unbranched. Ethylene glycol (HO-CH 2 CH 2 -OH) and propylene glycol (HO-CH MeCH 2 -OH) are most preferred.
  • polyalkylene glycols having a molecular weight of up to 10,000 Da more preferably polyalkylene glycols having a molecular weight of up to 1,600 Da, particularly preferably polyalkylene glycols having a molecular weight of up to 600 Da.
  • the alkali metal salts and / or ammonium salts and at least one alcohol having 1 to 5 hydroxyl groups together with the phyllosilicates, preferably phyllosilicates in an amount of 23 to 45 wt .-%, preferably as bentonite, the above-mentioned disadvantages of the prior the technique can be avoided. Especially with continued good processing properties and good pumpability, the sealing ability could be improved.
  • Phyllosilicates are known as sealants because of their high swelling capacity. Surprisingly, it has now been found that the sealing performance and at the same time the processability, in particular the pumpability, of sealants based on phyllosilicates can be increased by the use of the alcohols and salts according to the invention. These synergistic effects of the alcohols and salts are particularly pronounced at high levels of phyllosilicates in the mixtures according to the invention, or a high ratio of phyllosilicate to water. In the text below and in the claims this will be further described in detail.
  • the layered silicates of the invention are not particularly limited and selected from preferably bentonite, talc, montmorillonite, illite, kaolinite, sepiolite, mica and / or members of the mica group such as margarite and / or muscovite.
  • bentonite, talc, montmorillonite, illite, kaolinite and / or sepiolite are particularly preferred.
  • Particularly preferred are bentonite, talc, montmorillonite, illite and / or kaolinite.
  • Most preferred is bentonite.
  • the phyllosilicates can be used individually or as mixtures. Their environmental compatibility as a natural inorganic material is undisputed.
  • Phyllosilicates are characterized by their good sealing ability, in order to prevent in particular the penetration of water and other undesirable substances (earth, mortar, sand, stones ).
  • Phyllosilicates, especially bentonite swell to some degree upon contact with or mixing with water. This effect is particularly pronounced at a relatively high weight ratio of phyllosilicate to water.
  • Particularly preferred is a weight ratio of phyllosilicate to water, or preferably of bentonite to water of 0.3 to 1.1, particularly preferably from 0.5 to 0.6.
  • Phyllosilicates are largely water-insoluble materials that form relatively viscous masses with water, especially with small amounts of water. This is especially the case with bentonite.
  • the reduction of the amount of water results in a deterioration of the processability of the pastes, especially when working without further additives according to the invention.
  • the blends described in the three aforementioned prior art references (especially when using a relatively high level of layered silicate), inter alia when using bentonite, are very rigid and therefore not readily processable and not pumpable.
  • more than 23% by weight of phyllosilicate or bentonite is used, in particular when more than 35% by weight, based on the total mixture, is used, these problems occur.
  • the mixture also contains an alkali metal salt and / or ammonium salt, preferably an alkali metal salt, particularly preferably a sodium salt.
  • an alkali metal salt particularly preferably a sodium salt.
  • the salts LiCl, NaCl, KCl, NH 4 Cl, LiBr, NaBr, ammonium sulfate and / or KBr can be used.
  • inorganic alkali metal salts and / or ammonium salts particular preference is given to NaCl, KCl and / or NH 4 Cl and, in particular, NaCl and KCl are preferred.
  • the alkali and / or ammonium salt is a carboxylate, preferably a non-aromatic carboxylate, more preferably a carboxylate having 1 to 5 carbon atoms.
  • an alkali metal propionate in particular sodium propionate.
  • suitable for use are, for example, formates, acetates, and / or caprates, in each case preferably as alkali metal salt and particularly preferably as sodium salt.
  • dicarboxylate compounds preferably those having two to five carbon atoms, for example maleates, fumarates, glyoxalates, succinates, adipates and / or tartrates.
  • the corresponding alkali metal salt compounds, in particular the sodium salts are preferred.
  • Monocarboxylates are preferred over dicarboxylates.
  • the alkali metal salts and / or ammonium salts are preferably contained in the mixtures in an amount of from 0.1 to 15% by weight, particularly preferably from 2 to 4% by weight.
  • the data are in each case based on the total weight of the mixture.
  • the alkali metal salts and / or ammonium salts can be used alone or mixtures of these salts can be used.
  • the alkali metal salts and / or ammonium salts bring about improved processability and increase in pumpability compared to comparative mixtures without this additive. Without the addition of the salts according to the invention, the mixtures would be too stiff.
  • alcohols having from 1 to 5 hydroxyl groups particularly preferably aliphatic alcohols having from 1 to 5 hydroxyl groups, are contained in the mixtures.
  • the aliphatic part may be both branched and unbranched. Particular preference is given to aliphatic alcohols having 1 to 3 hydroxyl groups, preferably 1 to 2 hydroxyl groups and a number of 2 to 24 carbon atoms, more preferably 2 to 7 carbon atoms.
  • Ethylene glycol (HO-CH 2 CH 2 -OH) and propylene glycol (HO-CH MeCH 2 -OH) are most preferred.
  • alcohols having a higher number of hydroxyl groups sugars such as glucose may be mentioned.
  • polyalkylene glycols are used. Preference is given to polyalkylene glycols having a molecular mass of up to 10,000 Da, more preferably polyalkylene glycols having a molecular mass of up to 1,600 Da, particularly preferably polyalkylene glycols having a molecular mass of up to 600 Da.
  • polyethylene glycols, polypropylene glycols, and / or polybutylene glycols may be composed of one type of alkylene glycol or more and may be present both in the form of block polymers and in the form of copolymers having a more or less random distribution of the monomer units.
  • Polyethylene glycols, or in the case of mixed polyalkylene glycols, those polymers having a high ethylene glycol content, preferably greater than 90% by weight, are preferred in order to ensure adequate solubility in water.
  • Monohydroxypolyalkylene glycols which can be obtained, for example, by derivatization of one of the hydroxy groups, can also be used.
  • the alcohols in the mixture are polyalkylene glycols having a molecular weight of up to 1,600, more preferably 600 Da.
  • glycols are used.
  • ethylene glycol and propylene glycol are preferred.
  • the abovementioned alcohols are in each case preferably present in an amount of from 1.0 to 25% by weight, particularly preferably from 1 to 5% by weight, in the mixtures.
  • the abovementioned alcohols according to the invention can be used alone or as a corresponding mixture of alcohols. Aliphatic alcohols having 1 to 5 hydroxyl groups are preferred over the polyalkylene glycols.
  • the alcohols according to the invention also bring about improved processability or pumpability with better sealing. Surprisingly, it has been found that synergistic effects can be achieved when the alcohols and salts are used together. Particularly advantageously, as mentioned above, the sealing ability and at the same time the processability or pumpability can be improved. This effect was surprising and so unforeseeable.
  • the mixture contains from 23 to 45% by weight of phyllosilicate, preferably bentonite,
  • alkali metal salt and / or ammonium salt preferably sodium salt
  • alkali metal propionates in particular sodium propionate, are suitable as the carboxylate.
  • the fibers cause the mechanical stability and water resistance of the mixtures to be increased.
  • the fibers are preferably in a weight proportion of greater than 0 to 25 Wt .-%, particularly preferably 3 to 10 wt .-%, contained.
  • the fibers are fibers with a length of greater than 0 to 9 mm, particularly preferably greater than 0 to 6 mm.
  • fiber blends of natural fibers especially cellulosic fibers and synthetic fibers, especially polyamide, polypropylene, and / or polyethylene fibers.
  • Blends of natural fibers and synthetic fibers, especially blends of long and short fibers have the advantage of increasing the pressure resistance to water.
  • mixtures are particularly advantageous which contain at least two different lengths of fiber lengths, more preferably at the same time present fibers with a length of less than 1 mm and fibers with a length greater than 1 mm.
  • Particularly preferred are mixtures of natural fibers and synthetic fibers, wherein the natural fibers are preferably smaller than 1 mm and the synthetic fibers are preferably larger than 1 mm and smaller than 9 mm.
  • Mixtures which contain fibers of different lengths, in particular mixtures which preferably have a broad distribution over the entire preferred fiber length range of greater than 0 to 9 mm, are preferred precisely because these special fiber mixtures are particularly well suited for sealing against running water under pressure.
  • the proportion of preferably natural fibers having a length of less than 1 mm is preferably in the range of 50 to 90 wt .-% and particularly preferably in the range of 60 to 80 wt .-%, each based on the total weight of the fibers.
  • the invention also relates to the use of the mixture (s) according to the invention for preferably temporary sealing of components and / or construction machines, particularly preferably for temporarily sealing the transition between the tail shield and the pipe lining or segment lining of the tunnel safety.
  • the problems described at the outset of the sealing pastes known from the prior art, in particular tailstock sealing pastes, are largely avoided when using the mixtures according to the invention, in particular the preferred mixtures according to one of the dependent claims.
  • So-called seepage walls should be mentioned as an example for sealing components, which should preferably protect temporarily (eg during the execution of other construction works) from the ingress of water. Also, leaky pipes can be sealed first by the mixtures according to the invention until a renovation of the affected (water) line can be done. A variety of other (sealing) applications of a similar nature is conceivable.
  • An example of the sealing of a construction machine is the preferably temporary sealing of the transition between the shield tail of a tunnel boring machine and the pipe lining or segmental lining of the tunnel safety.
  • the preparation of the sealing compounds was carried out in a conventional mixer for pastes or high-viscosity substances. For this purpose, all ingredients are stirred until a homogeneous mass.
  • the penetration test (cone penetration test) was performed according to ASTM D217-02. This test serves to determine the processability or pumpability of the sealants. A value of 150/10 mm to 300 / 10mm guarantees a good processability and pumpability of the masses. The results of the penetration test for the sealants are summarized in Table 1.
  • the water pressure test is used to determine the sealing capacity of the sealing pastes against pressurized water. This test is performed according to the Matsumara test known in the art. The sealant to be tested is applied to a metal grid of 0.5 mm grid spacing and the test is carried out in a corresponding apparatus at a pressure of 8 bar (in a modification of the Matsumara test). The test is passed if no water penetrates through the sealant for a period of five minutes.
  • Table 1 The results of the water pressure test for the sealants are also summarized in Table 1.
  • V4 shows that, especially with high phyllosilicate fractions and relatively little water, the two tests are not passed, since the sealing compounds are too stiff.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Sealing Material Composition (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Gasket Seals (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

L'invention concerne des mélanges, de préférence des pâtes d'étanchéité, et de préférence encore des pâtes d'étanchéité pour queue de bouclier, et l'utilisation des mélanges selon l'invention pour assurer l'étanchéité d'éléments structuraux et/ou de machines de chantier, en particulier pour assurer l'étanchéité de préférence temporaire de la jonction entre la queue de bouclier d'un tunnelier et l'habillage intérieur de tuyau ou le cuvelage de la mise en sécurité d'un tunnel. Les mélanges renferment des phyllosilicates, de préférence bentonite ou talc; un alcool ayant entre 1 et 5 groupes hydroxyle, de préférence glycol; un sel alcalin ou un sel d'ammonium, de préférence carboxylate; et de l'eau.
EP09756518A 2008-12-17 2009-11-25 Pâte d'étanchéité Withdrawn EP2379667A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09756518A EP2379667A1 (fr) 2008-12-17 2009-11-25 Pâte d'étanchéité

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08171950 2008-12-17
PCT/EP2009/065792 WO2010076097A1 (fr) 2008-12-17 2009-11-25 Pâte d'étanchéité
EP09756518A EP2379667A1 (fr) 2008-12-17 2009-11-25 Pâte d'étanchéité

Publications (1)

Publication Number Publication Date
EP2379667A1 true EP2379667A1 (fr) 2011-10-26

Family

ID=41718956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09756518A Withdrawn EP2379667A1 (fr) 2008-12-17 2009-11-25 Pâte d'étanchéité

Country Status (11)

Country Link
US (1) US20120037042A1 (fr)
EP (1) EP2379667A1 (fr)
JP (1) JP2012512294A (fr)
CN (1) CN102257090A (fr)
AR (1) AR074789A1 (fr)
AU (1) AU2009335191A1 (fr)
CA (1) CA2747086A1 (fr)
CL (1) CL2011001369A1 (fr)
PE (1) PE20120391A1 (fr)
TW (1) TW201030132A (fr)
WO (1) WO2010076097A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002179549A (ja) * 2000-12-12 2002-06-26 Kishohin Kagaku Kaiho Kenkyusho:Kk 皮膚外用剤
CN114874825B (zh) * 2021-06-26 2023-07-25 上海鸿栩化工科技有限公司 一种盾尾密封油脂的生产工艺及其使用方法
CN113956913B (zh) * 2021-10-29 2022-07-26 中铁建华南建设(广州)高科技产业有限公司 水基盾尾密封脂及其制备方法和应用

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Also Published As

Publication number Publication date
CL2011001369A1 (es) 2011-09-02
JP2012512294A (ja) 2012-05-31
CN102257090A (zh) 2011-11-23
AR074789A1 (es) 2011-02-09
WO2010076097A1 (fr) 2010-07-08
US20120037042A1 (en) 2012-02-16
TW201030132A (en) 2010-08-16
CA2747086A1 (fr) 2010-07-08
AU2009335191A1 (en) 2011-07-07
PE20120391A1 (es) 2012-05-13

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