WO1992006055A1 - Process for sealing cement-bound material surfaces in water-conveying systems - Google Patents

Process for sealing cement-bound material surfaces in water-conveying systems Download PDF

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Publication number
WO1992006055A1
WO1992006055A1 PCT/EP1991/001867 EP9101867W WO9206055A1 WO 1992006055 A1 WO1992006055 A1 WO 1992006055A1 EP 9101867 W EP9101867 W EP 9101867W WO 9206055 A1 WO9206055 A1 WO 9206055A1
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Prior art keywords
water
alkali
cement
carbonate
silicate
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PCT/EP1991/001867
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German (de)
French (fr)
Inventor
Werner Wons
Walter Albersmeyer
Volker Wehle
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Henkel Kommanditgesellschaft Auf Aktien
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Publication of WO1992006055A1 publication Critical patent/WO1992006055A1/en

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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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
    • C04B41/5089—Silica sols, alkyl, ammonium or alkali metal silicate cements
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61—Coating or impregnation
    • C04B41/65—Coating or impregnation with inorganic materials
    • C04B41/68—Silicic acid; Silicates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear

Definitions

  • the invention relates to a method for treating water-bearing systems for sealing the surfaces of cement-bound materials.
  • the aim is to seal the surface of the material against the discharge of material-based ingredients into the water.
  • cement-bound pipelines play an important role in the central water supply.
  • the proportion of such pipelines in the overall system is relatively high. In this respect, a spontaneous exchange of the cement-bound pipelines for those made of other materials is not possible.
  • the invention is therefore based on the object of treating the cement-bound pipelines in such a way that they meet the requirements for water-carrying systems, in particular for drinking water-carrying systems.
  • this object is achieved in that an alkali silicate activated by adding an alkali carbonate or a hydrogen carbonate is added to the water.
  • a commercially available water glass is preferably used as the alkali silicate.
  • a water glass based on sodium silicate is expediently used.
  • a weight ratio of SiO 2 to Na 2 O of between 2: 1 and 3.8: 1 is preferably selected.
  • the alkali silicate can be activated by adding 0.1 to 5%, preferably 0.2 to 1%, of an alkali carbonate or alkali bicarbonate.
  • the activated alkali silicate is expediently added to the water in amounts of 1 to 20 g / m 3 , preferably 2 to 8 g / m 3 , calculated as SiO 2 .
  • the method according to the invention is particularly suitable when the water-carrying systems to be treated are flow-through systems.
  • Alkali silicate is known to be made by melting sand and soda together. The glass melted in this way subsequently becomes commercially available under high pressure and high temperature in water Dissolved water glasses. It is therefore particularly surprising that such a significant change in the reaction behavior can be achieved by adding even small amounts of sodium carbonate to the finished water glass.
  • Test strips with the dimensions 200 x 20 x 5 mm cut from commercially available asbestos-cement slabs were run according to test arrangement 1 in one flow track attached.
  • the agent according to the invention sodium water glass with a molar ratio of SiO 2 : Na 2 O of 3.3, a total SiO 2 content of 26.7% by weight and activated with 1% soda
  • the test duration was 9 months.
  • the raw water supply was stopped and pumped into the system at a speed of 90 1 / min., Corresponding to 3 m / sec. cycled for over 24 hours.
  • the circulating water was kept at the temperature of the last flow hours by means of a cryostat. This temperature was around 12.5 ° C (see test arrangement 2).
  • the system content was 5 1.
  • Blank value approx. 3 million fibers / 1
  • the asbestos were added to the image compared to a fresh as best surface.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Sealing Material Composition (AREA)

Abstract

What is concerned is a process for treating water-conveying systems to seal the surfaces of cement-bound materials. Here, the aim is to seal the material surfaces against the release of their components like sand or fibres into the water. This is achieved in that to the water is added an alkaline carbonate or a hydrogen carbonate-activated alkaline silicate, preferably a commercially available waterglass.

Description

'Verfahren zur Versiegelung zementgebundener Werk- stoffoberflächen in wasserführenden Systemen"  'Process for sealing cement-bound material surfaces in water-bearing systems'
Die Erfindung betrifft ein Verfahren zur Behandlung wasserführender Systeme zur Versiegelung der Oberflächen zementgebundener Werkstoffe. Dabei wird das Ziel verfolgt, die Werkstoffoberfl ächen gegen den Austrag von Werkstoffseitigen Inhaltsstoffen in das Wasser zu versiegeln. The invention relates to a method for treating water-bearing systems for sealing the surfaces of cement-bound materials. The aim is to seal the surface of the material against the discharge of material-based ingredients into the water.
In wasserführenden Systemen finden chemische Wechselwirkungen zwischen dem Wasser und den Werkstoffen des Systems statt. Die Größe dieser Wechselwirkung hängt im wesentlichen ab von der Wasserqualität, dem verwendeten Werkstoff und von den Betriebsbedingungen. Insbesondere bei zementgebundenen Werkstoffen, wie Schi euderbetonrohren oder Faserzement-Rohren, kann bei ungünstiger Wasserzusammensetzung eine Beeinträchtigung des Trinkwassers durch Auslaugung dieser Werkstoffe und damit verbundene Abgabe von z.B. Sand (Aussanden von Betonrohren) oder Fasern (Faserzement- Rohren) stattfinden. Di ese Beeinträchtigungen der Was serqualität sind im Sinne der DIN 2000 zu vermeiden. In water-bearing systems, chemical interactions take place between the water and the materials of the system. The size of this interaction essentially depends on the water quality, the material used and the operating conditions. Especially in the case of cement-bound materials, such as shotcrete pipes or fiber cement pipes, if the water composition is unfavorable, the drinking water can be impaired by leaching out these materials and the associated release of, for example, sand (sanding out of concrete pipes) or fibers (fiber cement pipes). These impairments of what Water quality should be avoided in the sense of DIN 2000.
In der zentralen Wasserversorgung spielen zementgebundene Rohrleitungen eine wesentliche Rolle. Der Anteil an solchen Rohrleitungen im Gesamtsystem ist relativ hoch. Insofern ist ein spontaner Austausch der zemeπtgebundenen Rohrleitungen gegen solche aus anderen Werkstoffen nicht möglich. Cement-bound pipelines play an important role in the central water supply. The proportion of such pipelines in the overall system is relatively high. In this respect, a spontaneous exchange of the cement-bound pipelines for those made of other materials is not possible.
Der Erfindung liegt daher die Aufgabe zugrunde, die zementgebundenen Rohrleitungen so zu behandeln, daß sie die Anforderungen an wasserführende Systeme, insbesondere an trinkwasserführende Systeme, erfüllen. The invention is therefore based on the object of treating the cement-bound pipelines in such a way that they meet the requirements for water-carrying systems, in particular for drinking water-carrying systems.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß dem Wasser ein durch Zugabe eines AIkalicarbonates oder eines Hydrogencarbonates aktiviertes Alkali-Silikat zugesetzt wird. According to the invention, this object is achieved in that an alkali silicate activated by adding an alkali carbonate or a hydrogen carbonate is added to the water.
Als AIkali-Silikat wird vorzugsweise ein handelsübliches Wasserglas verwendet. A commercially available water glass is preferably used as the alkali silicate.
Bei Rohrleitungssystemen, die insbesondere als Trinkwasserleitungen eingesetzt werden, wird zweckmäßig ein Wasserglas auf Natrium-Silikat-Basis verwendet. Dabei wird vorzugsweise ein Gewichtverhältnis von SiO2 zu Na2O zwischen 2 : 1 und 3,8 : 1 gewählt. In piping systems that are used in particular as drinking water pipes, a water glass based on sodium silicate is expediently used. A weight ratio of SiO 2 to Na 2 O of between 2: 1 and 3.8: 1 is preferably selected.
Die Aktivierung des AIkali-Silikates kann durch Zugabe von 0,1 bis 5 %, vorzugsweise von 0,2 bis 1 %, eines Alkalicarbonates oder AIkali-Hydrogencarbonates erfolgen. The alkali silicate can be activated by adding 0.1 to 5%, preferably 0.2 to 1%, of an alkali carbonate or alkali bicarbonate.
Das aktivierte AIkali-Silikat wird dem Wasser zweckmäßig in Mengen von 1 bis 20 g/m3, vorzugsweise 2 bis 8 g/m3, berechnet als SiO2, zugegeben. Die Anwendung des erfindungsgemäßen Verfahrens eignet sich insbesondere dann, wenn die zu behandelnden wasserführenden Systeme Durchflußsysteme sind. The activated alkali silicate is expediently added to the water in amounts of 1 to 20 g / m 3 , preferably 2 to 8 g / m 3 , calculated as SiO 2 . The method according to the invention is particularly suitable when the water-carrying systems to be treated are flow-through systems.
Bei Rohrleitungssystemen aus metallischen Werkstoffen ist es bereits bekannt (EP 0 102 587), daß durch Zugabe von Alkali-Silikaten zum Trinkwasser Korrosionsvorgänge auf den metallischen Werkstoffen verhindert werden können. Über den Einfluß einer derartigen Dosierung auf zementgebundene Werkstof. lagen bisher keine Erkenntnisse vor. Orientierende Vorversuche ergaben, daß mit handelsüblichen Alkali- Silikaten in der durch die Trinkwasserverordnung begrenzten Zugabemenge keine schützenden Effekte auf zementgebundenen Werkstoffen festgestellt werden konnten. In pipeline systems made of metallic materials, it is already known (EP 0 102 587) that corrosion processes on the metallic materials can be prevented by adding alkali silicates to the drinking water. About the influence of such a dosage on cement-bound material. there were no findings so far. Orientative preliminary tests showed that with commercially available alkali silicates in the addition quantity limited by the drinking water ordinance no protective effects on cement-bound materials could be determined.
Die handelsüblichen AIkali-Silikat (Wassergläser) liegen bei Gewichtsverhältnissen SiO2 zu Na2O zwischen 2 : 1 und 3,8 : 1. Im gesamten Bereich dieser Gewichtsverhältnisse konnten keine signifikanten Auswirkungen auf die Oberfläche zementgebundener Werkstoffe ermittelt werden. The commercially available alkali silicate (water glasses) with weight ratios SiO 2 to Na 2 O lie between 2: 1 and 3.8: 1. In the entire range of these weight ratios, no significant effects on the surface of cement-bound materials could be determined.
Überraschenderweise wurde nun gefunden, daß durch Aktivierung beispielsweise der handelsüblichen Wassergläser durch Zugabe von AIkalicarbonat oder AIkali- Hydrogencarbonat sich auf der Oberfläche zementgebundener Werkstoffe Mikroschichten ausbilden, die die Abgabe von Werkstoffinhaltsstoffen an das Wasser verhindern. Surprisingly, it has now been found that by activating, for example, commercially available water glasses by adding alkali carbonate or alkali hydrogen carbonate, micro-layers form on the surface of cement-bound materials, which prevent the release of material constituents into the water.
Bekanntlich wird AIkali-Silikat durch Zusammenschmelzen von Sand und Soda hergestellt. Das so erschmolzene Glas wird nachträglich unter hohem Druck und hoher Temperatur in Wasser zu den handelsüblichen Wassergläsern aufgelöst. Deshalb ist es besonders überraschend, daß durch bereits kleine Zugaben von Natriumcarbonat zu dem fertigen Wasserglas eine derart deutliche Veränderung des Reaktionsverhaltens erzielt werden kann. Alkali silicate is known to be made by melting sand and soda together. The glass melted in this way subsequently becomes commercially available under high pressure and high temperature in water Dissolved water glasses. It is therefore particularly surprising that such a significant change in the reaction behavior can be achieved by adding even small amounts of sodium carbonate to the finished water glass.
Eine Erklärung für dieses Verhalten entzieht sich derzeit einer genauen wissenschaftlichen Erklärung. Es ist jedoch stark anzunehmen, daß durch den Eintrag von Carbonat die Polymerstruktur des Wasserglases so verändert oder besser aktiviert wird, daß die Reaktivität der Werkstoffoberfläche, insbesondere der erhöhte pH-Wert, auf diese aktivierte Polymerstruktur derart einwirkt, daß sich gelartige SiO2-Schichten in Umkehrung der Herstellreaktion ausbilden können. Im übrigen läßt sich eine derartige Aktivierung des Wasserglases durch andere, nach der Trinkwasserverordnung reguläre Stoffe, wie z.B. Natriumhydrogensulfat, nicht nachweisen. An explanation for this behavior is currently beyond a precise scientific explanation. However, it can be strongly assumed that the introduction of carbonate changes or better activates the polymer structure of the water glass in such a way that the reactivity of the material surface, in particular the increased pH value, acts on this activated polymer structure in such a way that gel-like SiO 2 layers can train in reverse of the manufacturing reaction. Moreover, such activation of the water glass cannot be demonstrated by other substances that are regular according to the Drinking Water Ordinance, such as sodium hydrogen sulfate.
Beispiele: Examples:
Die Versuche wurden mit einem Talsperren-Rohwasser von bekannter Zementaggressivität durchgeführt. Die Wasserdaten waren folgende: The tests were carried out with a raw reservoir water of known cement aggressiveness. The water data were as follows:
Gesamthärte: 2,25° dH Total hardness: 2.25 ° dH
M-Wert: 0,0 mva1/1  M value: 0.0 mva1 / 1
T-Wert: 0,13 mva1/1  T value: 0.13 mva1 / 1
pH-Wert: 7,3  pH: 7.3
Temperatur: 6,7 - 13,5°C  Temperature: 6.7 - 13.5 ° C
Leitfähigkeit: 130 ms/cm  Conductivity: 130 ms / cm
Aus handelsüblichen Asbest-Zement-Platten geschnittene Probestreifen mit den Abmessungen 200 x 20 x 5 mm wurden gemäß Versuchsanordnung 1 in einer Durchfluß strecke befestigt. Das Wasser durchfloß die Meßstrecke mit einer Geschwindigkeit von etwa 0,3 m/sek., entspr. 10 1/Min. Das erfindungsgemäße Mittel (Natronwasserglas mit einem Mol-Verhältnis SiO2 : Na2O von 3,3, einem Gesamt SiO2-Gehalt von 26,7 Gew.-% und aktiviert mit 1 % Soda) wurde dem Wasser über eine mengenproportional gesteuerte Dosierpumpe in einer Menge von 15 g/m3 bezogen auf SiO2 zugegeben. Die Versuchsdauer betrug 9 Monate. Nach Ablauf dieser Versuchszeit wurde die Rohwasserzufuhr gestoppt und über eine Pumpe in das System mit einer Geschwindigkeit von 90 1/Min., entspr. 3 m/sek. über 24 h im Kreislauf gefahren. Um Temperatureinflüsse auszuschalten, wurde über einen Kryostaten das Umlaufwasser bei der Temperatur der letzten Durchflußstunden gehalten. Diese Temperatur lag bei etwa 12,5° C (siehe Versuchsanordnung 2). Test strips with the dimensions 200 x 20 x 5 mm cut from commercially available asbestos-cement slabs were run according to test arrangement 1 in one flow track attached. The water flowed through the measuring section at a speed of about 0.3 m / sec., Corresponding to 10 1 / min. The agent according to the invention (sodium water glass with a molar ratio of SiO 2 : Na 2 O of 3.3, a total SiO 2 content of 26.7% by weight and activated with 1% soda) was added to the water via a proportionally controlled metering pump in an amount of 15 g / m 3 based on SiO 2 added. The test duration was 9 months. After this test period, the raw water supply was stopped and pumped into the system at a speed of 90 1 / min., Corresponding to 3 m / sec. cycled for over 24 hours. In order to eliminate the effects of temperature, the circulating water was kept at the temperature of the last flow hours by means of a cryostat. This temperature was around 12.5 ° C (see test arrangement 2).
Der Systeminhalt betrug 5 1. The system content was 5 1.
Nach Ablauf der 24 h wurde das Wasser über ein Membranfilter 0,4 μm Porenweite abfiltriert und die Zahl der auf dem Filter verbliebenen Fasern/1 ausgewertet. Die mikroskopische Auswertung wurde aus Fasern umgerechnet und ergab folgende Werte: After the 24 h had elapsed, the water was filtered through a 0.4 μm pore size membrane filter and the number of fibers / 1 remaining on the filter was evaluated. The microscopic evaluation was converted from fibers and gave the following values:
Blindwert: ca. 3 Mio. Fasern/1, Blank value: approx. 3 million fibers / 1,
Versuchsergebnisse mit dosiertem Wasser: ca. 250.000 Test results with dosed water: approx. 250,000
Fasern/1 Fibers / 1
Di e Asb estproben wurden zu s ätzl i ch i m Verg l e i ch zu ei n er fri s chen As bes t oberf l äc he fo tografi ert . The asbestos were added to the image compared to a fresh as best surface.

Claims

Patentansprüche Claims
1. Verfahren zur Behandlung wasserführender Systeme zur Versiegelung der Oberflächen zementgebundener Werkstoffe, d a d u r c h g e k e n n z e i c hn e t, daß dem Wasser ein durch Zugabe eines AI kalicarbonates oder Hydrogencarbonates aktiviertes Alkali-Silikat zugesetzt wird. 1. A method for the treatment of water-bearing systems for sealing the surfaces of cement-bound materials, so that an alkali silicate activated by adding an alkali carbonate or hydrogen carbonate is added to the water.
2. Verfahren nach Anspruch 1, d a d u r c h g ek e n n z e i c h n e t, daß als Alkali-Silikat ein handelsübliches Wasserglas verwendet wird. 2. The method of claim 1, d a d u r c h g ek e n n z e i c h n e t that a commercially available water glass is used as the alkali silicate.
3. Verfahren nach Anspruch 2, d a d u r c h g e- k e n n z e i c h n e t, daß ein Wasserglas auf Natrium-Sil 1 kat-Basis verwendet wird. 3. The method of claim 2, d a d u r c h g e- k e n n z e i c h n e t that a water glass based on sodium silicate is used.
4. Verfahren nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t, daß ein Gewichtsverhältnis von SiO2 zu Na2O von 2 : 1 bis 3,8 : 1 gewählt wird. 4. The method according to claim 3, characterized in that a weight ratio of SiO 2 to Na 2 O of 2: 1 to 3.8: 1 is selected.
5. Verfahren nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t, daß die Aktivierung des AIkali-Silikates durch Zugabe von 0,1 bis 5 % eines AI kal icarbonates oder Alkali-Hydrogencarbonates erfolgt. 5. The method according to any one of claims 1 to 4, that the activation of the alkali silicate is carried out by adding 0.1 to 5% of an alkali metal carbonate or alkali metal bicarbonate.
6. Verfahren nach Anspruch 5, d a d u r c h g ek e n n z e i c h n e t, daß die Aktivierung des Alkali-Silikates durch Zugabe von 0,2 bis 1 % eines AIkalicarbonates oder Alkali-Hydrogencarbonates erfolgt. 6. The method according to claim 5, d a d u r c h g ek e n n z e i c h n e t that the activation of the alkali silicate is carried out by adding 0.2 to 1% of an alkali carbonate or alkali bicarbonate.
7. Verfahren nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t, daß dem Wasser das aktivierte AIkali-Silikat in Mengen von 1 bis 20g/m3, berechnet als SiO2, zugegeben wird. 7. The method according to any one of claims 1 to 6, characterized in that the activated alkali silicate is added to the water in amounts of 1 to 20 g / m 3 , calculated as SiO 2 .
8. Verfahren nach Anspruch 7, d a d u r c h g ek e n n z e i c h n e t, daß dem Wasser das aktivierte AIkali-Silikat in Mengen von 2 bis 8 g/m3, berechnet als SiO2, zugegeben wird. 8. The method according to claim 7, characterized in that the activated alkali silicate is added to the water in amounts of 2 to 8 g / m 3 , calculated as SiO 2 .
9. Anwendung des Verfahrens nach einem der Ansprüche 1 bis 8, d a d u r c h g e k e n n z e i c h n e t, daß die zu behandelnden wasserführenden Systeme Durchflußsysteme sind. 9. Application of the method according to one of claims 1 to 8, d a d u r c h g e k e n n z e i c h n e t that the water-carrying systems to be treated are flow systems.
PCT/EP1991/001867 1990-10-09 1991-09-30 Process for sealing cement-bound material surfaces in water-conveying systems WO1992006055A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP4031987.3 1990-10-09
DE4031987 1990-10-09
DE19914103528 DE4103528A1 (en) 1990-10-09 1991-02-06 METHOD FOR SEALING CEMENT-LINKED MATERIAL SURFACES IN WATER-LEADING SYSTEMS
DEP4103528.3 1991-02-06

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WO1992006055A1 true WO1992006055A1 (en) 1992-04-16

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PT (1) PT99167A (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631086A1 (en) * 1993-06-24 1994-12-28 Wilhelm Klieboldt Process for sealing leaking water pipes and vessels

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Publication number Priority date Publication date Assignee Title
DE117796C (en) *
CH259628A (en) * 1946-01-21 1949-01-31 Ford Motor Co Device on motor vehicles for cushioning the frame on the wheels by means of torsion bars.
DE2737495A1 (en) * 1977-08-19 1979-03-01 Ruoff Schaefer Rudolf Pipe insulation - made of an outer metal sheath and liner of foamed asbestos impregnated with corrosion inhibitor
FR2435450A1 (en) * 1978-09-11 1980-04-04 Champagnac Gabriel Sealing rocks and cement - by treatment with mixt. of silicate and carbonate
DE3130282A1 (en) * 1981-07-31 1983-02-17 Wilhelm 6325 Grebenau Klieboldt Sealant for water-conveying circulation systems
EP0102587A1 (en) * 1982-09-02 1984-03-14 Henkel Kommanditgesellschaft auf Aktien Method of protecting water-containing systems against corrosion
WO1989005887A1 (en) * 1987-12-16 1989-06-29 Alagi Állami Tangazdaság Process for making soil impermeable to water, in particular for repairing leaking underground tubes or for improving the durability of structures

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE117796C (en) *
CH259628A (en) * 1946-01-21 1949-01-31 Ford Motor Co Device on motor vehicles for cushioning the frame on the wheels by means of torsion bars.
DE2737495A1 (en) * 1977-08-19 1979-03-01 Ruoff Schaefer Rudolf Pipe insulation - made of an outer metal sheath and liner of foamed asbestos impregnated with corrosion inhibitor
FR2435450A1 (en) * 1978-09-11 1980-04-04 Champagnac Gabriel Sealing rocks and cement - by treatment with mixt. of silicate and carbonate
DE3130282A1 (en) * 1981-07-31 1983-02-17 Wilhelm 6325 Grebenau Klieboldt Sealant for water-conveying circulation systems
EP0102587A1 (en) * 1982-09-02 1984-03-14 Henkel Kommanditgesellschaft auf Aktien Method of protecting water-containing systems against corrosion
WO1989005887A1 (en) * 1987-12-16 1989-06-29 Alagi Állami Tangazdaság Process for making soil impermeable to water, in particular for repairing leaking underground tubes or for improving the durability of structures

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Chemical Abstracts, volume 111, no. 14, 2. Oktober 1989 (Columbus, Ohio, US) siehe Seite 298, Zusammenfassung 120021q, & CH, A, 259628 (STEPITA, MATEJ) 15. Januar 1989 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631086A1 (en) * 1993-06-24 1994-12-28 Wilhelm Klieboldt Process for sealing leaking water pipes and vessels

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PT99167A (en) 1993-12-31

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