WO2000049322A1 - Procede et materiau pour la reparation de conduits et analogues - Google Patents

Procede et materiau pour la reparation de conduits et analogues Download PDF

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Publication number
WO2000049322A1
WO2000049322A1 PCT/US1999/010471 US9910471W WO0049322A1 WO 2000049322 A1 WO2000049322 A1 WO 2000049322A1 US 9910471 W US9910471 W US 9910471W WO 0049322 A1 WO0049322 A1 WO 0049322A1
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WO
WIPO (PCT)
Prior art keywords
conduit
plastic
tubing
sections
strips
Prior art date
Application number
PCT/US1999/010471
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English (en)
Inventor
Thomas Gianfrancisco
Original Assignee
Thomas Gianfrancisco
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 Thomas Gianfrancisco filed Critical Thomas Gianfrancisco
Priority to AU41855/99A priority Critical patent/AU4185599A/en
Publication of WO2000049322A1 publication Critical patent/WO2000049322A1/fr

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Classifications

    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/164—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing fluid being introduced in the pipe

Definitions

  • the invention relates to an improved method and material for repairing sewer pipes, water mains, tunnels, storage tanks, and the like. It is based on the use of a structure which minimizes voids and contaminants, and the use of selected fly-ash fillers which serves to reduce material costs and to enhance the structural strength of the final system. Description of Related Art
  • Tunnels and particularly sewer structures in the United States and throughout the world are frequently deteriorated to the point where they do not retain the liquids and other effluent they need to contain; often, they do not exclude ground water from entering or lose their structural capability.
  • These normally brick or masonry structures require repairs which necessitate replacement of the masonry structure with a new one. This requires digging up of the old sewer structure, removing the old materials and replacing the brick or concrete sewer line with a new one made of similar materials. All of this involves enormous cost and disruption of pedestrian or vehicular traffic since many sewer lines are b-uried under streets or sidewalks in cities.
  • the problem is particularly acute for the larger sewer lines which have to be built up in place, in contrast to smaller sewer lines which can be preformed pipe-like elements laid end-to-end.
  • the settable compound can be injected separately between the inner surface of the sewer to be repaired and the outer surface of liner elements to fill in the space between the various rib-like elements and the tunnel to be repaired. Since the whole liner structure of Jones-Hinton loosely contacts the tunnel liner and the whole assembly is not fastened, it is allowed to move when set with the structure composed of spacer elements and lining elements or with the tunnel wall. Other problems are apparent from the statement in this reference that the lubricants must be introduced to slidably assemble the elements together. This would create extensive problems since these elements, when put in place in the sewer to be repaired, might be many feet long, perhaps 50 feet to 200 feet in length, requiring sliding of the elements within each other in the whole distance. Other deficiencies are obvious in that the bottom of the whole structure is open, thereby not functioning to retain sewer liquids or exclude ground water, in addition to not having significant structural strength to reinforce the weakened physical structure of the deteriorated sewer.
  • US Patent 4,336,012 Another prior effort is illustrated by the technology disclosed in US Patent 4,336,012.
  • This patent relates to lining a sewer to be repaired with a tube of felt with an impervious plastic outer layer, applying a "slug" of resin to the inner tube of fibrous felt-like material and drawing the tube through squeezing rollers while a vacuum is drawn through one or more openings in advance of the spreading resin.
  • the process involves placing a measured quantity of semi-liquid settable plastic at the end of the tunnel segment to be repaired, spreading the settable plastic through the inner fibrous tube sequentially from the far portion to the near portion by using rollers and drawing air from the fiber tube.
  • the objective of the present invention is, therefore, to repair a conduit without the necessity of drawing a vacuum, without the disadvantages of the prior art, and to use a filler material which would improve the economic and functional aspects of the process.
  • the invention provides a method for repair of a length of a conduit having a circumferential inner surface, comprising the steps of: a) anchoring to the inner surface in a direction parallel to the length a plurality of sections of tubing of generally rectangular cross-section spaced around the onduit in the circumferential direction, each of the sections of tubing having therein a plurality of openings in a direction parallel to the circumferential direction; b) anchoring to the tubing on a surface thereof opposite to a surface of the tubing anchored to the inner surface a plurality of strips of plastic sheeting, the strips of plastic sheeting extending circumferentially around the conduit along the length of the repair, defining thereby a space between the plastic sheeting and the inner surface, the plastic sheeting being primed on a surface thereof facing the inner surface of the conduit; c) sealing a first end of each of the plurality of sections of tubing, and the adjacent space between the sheeting and the conduit; d) priming the plastic sheeting with
  • the first of the components used in the repair is PVC tubing of generally rectangular cross-section which is slotted or perforated throughout its length.
  • the tubing is generally 1-1.5 inches square or rectangular with slots or perforations extending its 8-15 foot length, which is normally about 50 to 100 feet when extended end to end.
  • the second component is PVC sheeting, about 2 feet wide, 8-15 feet long arranged end to end and 1/4 to 1/8 inch thick.
  • the third component is a settable liquid plastic, comprising generally an epoxy grout and a selected filler.
  • This settable liquid plastic is also generally part of a system including a primer.
  • the primer combines an isocyanate functional material with a co-reactant polymer capable of reaction with the isocyanate .
  • the isocyanate may be aliphatic or aromatic in nature and may be a monomer, a dimer, a trimer, a biuret, or a prepolymer.
  • the co-reactant polymer may be a hydroxyl, amine or mercaptan terminated polyester, polyether, acrylic or vinyl polymer. Since the isocyanate and co- reactant polymers are selected to react with each other, they must be supplied in separate packages, and combined just prior to use.
  • the settable liquid plastic is preferably an epoxy grout, which is a combination of liquid epoxy resin, mineral filler and amine curing agent for the epoxy resin.
  • the epoxy resin may be of the Biphenol A, Biphenol F or cycloaliphatic type.
  • the preferred epoxy is a commercial epoxy binder which has a pot life (1/2 gallon) of 35 minutes, viscosity of about 150 cps, compressive strength of about 11,000 psi and tensile strength of about 8000 psi .
  • the preferred mineral filler is Class C fly ash.
  • Fly ash is the fine ash product which results from the combustion of coal, typically recovered with an electrostatic precipitator .
  • Class C fly ash is a high lime material which is pumpable at the percentage by volume used and controls the heat generated by the curing.
  • Class F fly ash may also be used under some circumstances.
  • Other fillers used in plastic resins such as ground silica, calcium carbonate, mica, talc and glass fibers, flakes and spheres are not suitable because of difficulty in pumpability when sufficient amounts are used to control heat which affects the PVC.
  • the amine hardener may be aliphatic, cyclaliphatic or aromatic in nature; amides, amidoamines and adducts of aliphatic, cycloaliphatic and aromatic amines may also be used.
  • the epoxy grout must be supplied with hardener, and mixed just prior to use.
  • the filler may then be combined with the mixed, two-part resin.
  • the sewer or wastewater conduit to be repaired can be cleansed using a power wash of 1200-3000 PSI water with or without sandblasting for the purpose of removing material to expose a clean and solid surface.
  • the surface is etched using muriatic or similar acid, following by flushing with a solution having a chlorine content to kill bacteria.
  • the tubing and PVC sheeting affixed along the conduit to be repaired is preferably supplied to repair up to about a total 50 to 300-foot length at a time.
  • the strips of sheeting are on the order of 2 feet wide by 8 to 15 feet long and are laid and sealed end to end to the length of the conduit to be repaired.
  • the rectangular tubing is applied longitudinally to the sewer at 2 foot intervals around the circumference with concrete screws or anchors.
  • the strips of PVC sheeting are then glued or welded end to end and to the tubing using plastic welding techniques.
  • the surface of the strips which face the inner surface of the conduit be primed for adhesion, typically with a primer compatible with the settable liquid plastic; other priming methods known to those of ordinary skill in the art may also be used.
  • the surface of the tubing is also preferably primed.
  • the conduit having a plastic sheet liner assembly fixed therein is prepared for application of the epoxy grout by sealing one end of each of the tubing sections anchored to the conduit, as well as the adjacent spaces between the conduit and sheeting, with epoxy putty.
  • a fitting is inserted to adapt the rectangular tubing for connection with a round hose.
  • the outer round portion of the rectangular-to-round fitting is sized to fit a flexible hose which will extend outwardly to a hose outlet on a manifold.
  • the manifold includes a central chamber for receiving the epoxy grout from a pump and I Dole tubing fittings adapted to receive the rectangular-to-round fittings.
  • the manifold preferably includes one or two outlet tubes to accommodate sequentially from the bottom of the cavity formed by the PVC sheets all of the longitudinal rectangular tubing sections anchored to the conduit to be repaired and holding the PVC liner in place. Pumping is started by first filling the bottom rectangle tube until epoxy fill is in the next higher pair of rectangular tubes. The epoxy input tube is then connected to those tubes, then similarly pumped, successively upward until the top is filled. Epoxy putty should be used to seal the open end and of the cavity formed by the PVC sheets between the rectangular tubes to which the rectangular round inlet fittings are attached.
  • the epoxy grout is then pumped through the manifold and through the sections of rectangular tubing mounted on the introduction end wall of the conduit to be repaired.
  • one tubing section preferably at the high point of the system, is not used for introduction of epoxy grout, but is attached to a hose which in turn leads to a bucket or like receptacle located a short distance away.
  • Laterals or lines extending to or outward from a main conduit to be repaired are lined by cutting an opening in the main conduit wall slightly smaller than the size of the lateral conduit, and rolling a piece of PVC sheeting into a cylindrical shape extending about 10 to 15 inches into the lateral pipe.
  • the seam between the opening in the large pipe and small pipe is held in placed and sealed by application of an adhesive or through the use of plastic welding techniques.
  • the sleeve portion that extends into the liner is trimmed even with the inner wall of the liner.
  • the method of the invention may be used more generally to form solid plastic resin objects, by forming a hollow object with walls at least partially formed of polyvinyl chloride (PVC) sheet, priming the interior surfaces of the PVC sheet, filling the object with a settable liquid epoxy composition containing Class C fly ash, and allowing the composition to cure and form the solid resin object.
  • PVC polyvinyl chloride
  • Figure 1 shows a side elevational view of a length of sewer line under repair illustrating, in somewhat exaggerated form, the disposition of a normal sewer at a very slight angle to the horizontal;
  • Figure 2 shows a perspective view of the end of the sewer after the inner surface is cleaned and prepared, with the longitudinal, perforated rectangular tubing fastened in place;
  • Figure 3 shows the view of Figure 2 with the longitudinal strips of plastic sheeting having their adjacent edge portions anchored to the tubing by adhesive or a plastic welding technique;
  • Figures 4 and 5 are lateral cross sectional views of the sewer along line 4-4 of Figure 1, Figure 4 showing by arrows where the liquid settable plastic is to be injected initially, and Figure 5 showing where the liquid plastic is injected after completing the injection and filling of the tubing and adjacent spaces between the tubes from the positions shown in Figure 4;
  • Figures 6 and 7 are perspective views depicting the configuration of the rectangular tubing shown in the above figures;
  • Figure 8 is an end view of the bottom portion of a sewer line ready for repair, with tubing and sheets in place;
  • Figure 9 is a perspective view of a rectangular to round fitting for connection to the tubing in Figure 8.
  • Figure 10 illustrates an outlet hose system through a rectangular to round fitting located at the uppermost portion of the segment of the assembly depicted in the above Figures where the liquid plastic is introduced through the lower end portions;
  • Figure 11 and 12 depict a modified structure for extending the sewer liner to "laterals" or smaller sewer conduits through which sewage enters the main sewer, with Figure 11 in longitudinal cross-section and Figure 12 in lateral cross-section;
  • Figure 13 illustrates an alternate form of the rectangular tubing/connecting plastic sheet assembly where a single piece of extruded plastic can be snapped together to form the aforementioned assembly with the base portions which form the rectangular tubing fastened to the inner surface of the sewer; and
  • Figure 14 depicts a form of rectangular tube construction having a bottom channel with a snap-on top.
  • the steps involved in carrying out the invention include (1) assemblage of a cavity system, (2) preparation of a suitable mixture of liquid resin with selected fillers, and (3) sequential filling of the cavity with the resin-filler mixture.
  • Fig. 1 shows a section of sewer line 10 to be repaired which is inclined at an angle of about 1°, having an upper end 11 and a lower end 12.
  • the repair commences from the upper end 11 to facilitate the latter stages of the process when the settable liquid is introduced so that gravity causes the lower end 12 to fill up first beginning at the bottom portion, extending around the sides and gradually filling the system from the bottom of lower end 12 to the top of the upper end 11, the repair structure then being filled with settable liquid plastic.
  • the processing steps of the invention are applied sequentially to selected lengths of sewer line or tunnel ranging usually from 50 to 300 feet.
  • Fig. 2 shows the first step in the mechanical application which follows cleaning of the inside of the sewer line, as set forth above.
  • Rectangular tubing sections 13 with slots 19, also shown in Figs. 6 and 7, are mounted longitudinally inside the sewer 10 utilizing metal anchors or fasteners 14. Alternatively, the tubing sections may be adhered with an adhesive; this is discussed further with regard to Fig. 14.
  • the longitudinally mounted rectangular tubes are placed a preselected distance apart circumferentially, such as 2 feet apart, and parallel to each other. Preferably, the rectangular tubes are spaced around the entire circumference of the sewer, as shown in Fig. 2, and along the entire length of the repair.
  • Fig. 3 illustrates the plastic sheeting 15 in the form of strips forming a lining of the sewer mounted on the rectangular tubing 13. These strips, as well as the rectangular tubing, are covered with a primer, the plastic strips being coated on the side toward the sewer.
  • Fig. 3 shows the uppermost plastic liner strip 15 without the last and uppermost strip being in place. This is done to accommodate variances between the inside circumference of the tunnel and the aggregate widths of all of the plastic strips.
  • the opening between the uppermost rectangular tubes is initially left open, shown a-s gap 16.
  • the gap 16 is covered by application of a last or filler strip 17 which is applied to the outside of the plastic lining formed on either side of the gap 16.
  • this last plastic strip to fill gap 16 can be trimmed to a narrower width and adhered directly to rectangular tubes 13 on either side of the gap 16 in the sheet liner 15.
  • the seams and unwanted openings of the plastic tube are sealed by hot air welding and/or a suitable sealant to prevent the liquid epoxy from leaking out prior to setting. In this manner, a cavity is formed between the vinyl tube and the conduit or sewer pipe and forms a provision for later receiving the epoxy-filler mixture .
  • a primer is used, one preferred composition comprising essentially an approximately 4% (by volume) solution of 1, 6-hexamethylene diisocyante polymer in a solvent mixture of xylene and methyl istobutyl ketone.
  • vapors from these primers constitute only a moderate toxic hazard.
  • additional safety can be afforded by applying the primer up to one month in advance in a controlled setting, e.g., within a factory plant.
  • the relatively low melting, forming, and softening temperatures of PVC offer both the advantage of easier field operations (easier to weld by the hot air technique) , and the difficulty of having to limit the temperature increase as the result of the exothermic setting process. It has been found that the curing temperature of settable resins such as polyester or vinyl esters as so high they will melt or distort sheet vinyl. Even use of epoxy resins generate sufficient heat to weaken or distort vinyl sheet materials which can be below 100° F. Applicant's epoxy system described herein controls or neutralizes the effects of the curing to create a strong bond and combination of the sheet and liquid resins .
  • part of the solution is to increase the heat capacity through use of inert fillers.
  • the use of several resins was investigated. It was found that polyesters and vinyl epoxy resins, though settable, can not be used on account of the high temperatures reached during the curing process (both with and without fillers) and the consequent destruction of the integrity of the vinyl sheet cavity.
  • Epoxy resins such as described herein, on the other hand, work satisfactorily when used with the fillers which have been discovered in the instant invention. In general, several criteria must be considered.
  • the filler selected should be compatible with the epoxy resin both during the setting process and to from the viewpoint of the mechanical strength of the final product.
  • the filler and resin must have comparable densities as otherwise the filler will quickly separate from the liquid resin. From a practical point of view, it should be inexpensive. Most importantly, however, the filler must not impede the flow of the liquid plastic resin during filling because the epoxy/filler combination has to pass through relatively small convoluted openings for relatively long distances.
  • silica powder and certain types of fly ash can lower sufficiently the peak curing temperature of the pure epoxy resins so as not to affect in an untoward manner a repair work using the vinyl sheet tube.
  • Silica powder was found to be unsatisfactory, however, because a mixture of liquid epoxy resin and silica has a reduced pumpability and blockages are created when such a mixture reaches a point of restrict flow. As a result of such restricted flow, in turn, a greater pumping pressure becomes required, additional heat is generated, the flow of the liquid mixture is further impeded, and the heat causes accelerated curing and consequent blockage in the cavity system.
  • the exposed ends 18, as shown in Fig. 4, of the rectangular tubes 13 are exposed to the portion of the repair where the epoxy mixture is to be introduced.
  • the job is initially set up so that these exposed ends will be the upper ends 11 of the downwardly sloping segment of the sewer line on tunnel 10 under repair.
  • These open ends of the rectangular tube are then plugged with a temporary rectangular tube to round fittings 38 shown in Fig. 8 with the round part receiving the tubes 37 from the pumped source of the epoxy resin mixture.
  • the lower end 12 of the cavity between the vinyl inner sheet structure and the sewer line to be repaired is sealed with epoxy putty. Any opening between the ends, including the lateral fittings, are sealed with epoxy putty or welded so as to prevent leakage of the liquid resin-filler mixture prior to setting.
  • filling is started by connecting the pump (or pumps) to the end of the rectangular tube in the bottom-most position 20, as shown in Fig. 9, and then the next high pair of rectangular tubes 13.
  • the connection between the pump and the tubing is made via a "rectangular to round" fitting 38, as shown in Fig. 8.
  • the fitting 38 includes a round end 41 for connection to a hose 37 connected to the pump, and a rectangular end 39 for connection to the tubes 13.
  • the liquid resin-filler mixture is pumped into tubes 13, passing downwardly and away from the pumping area through the rectangular tubes to the end of the rectangular tubes 13 at the far end 12 of the segment of the sewer line being repaired up to approximately 50 feet in length.
  • the liquid mixture will simultaneously spread through the side holes or slots 19 in the rectangular tubes 13 to the space between the rectangular tubes which are, in turn, between the interior of the vinyl liner and the inner surface of the conduit pipe or sewer pipe under repair.
  • the bottom-most portion of these cavities will then be filled until the level of the resin-filler mixture reaches the next highest pair of inlet points of tubes 13.
  • the outlet tubes from the pumping source of the resin- filler mixture are then raised to the next higher pair of tubes 13 and the same type of filling action continues.
  • the last fill of the uppermost pair of tubes will first extend away from the inlet point to the far end of the segment being repaired (Fig. 10).
  • the air cavity will then begin to be filled from the far side to the near side as air and waste water are moved toward the input end 11.
  • an exhaust tube 24 which can be a rectangular to round fitting 38 or a tube and a bucket is incorporated to the very top of the cavity of the input end 11.
  • the appearance of the excess resin-filler mixture out of the exhaust tube will serve as an indicator that all air and waste water have been removed from the cavity, and that t e latter is filled with the resin-filler mixture.
  • the resin is allowed to cure for approximately half an hour.
  • the instant invention requires the connection of the laterals when the cavity forming vinyl sheet structure is in place before filling.
  • a hole is cut by an operator where the lateral 22 has been going into the old sewer line 10, the site where waste water may very likely enter into the space between the vinyl liner and the original walls of the conduit pipe or sewer line.
  • the operator runs a piece of a tube of vinyl sheet into the lateral, a convenient distance perhaps, half a meter, welds the tube lining the lateral opening to the vinyl sheet lining the main sewer repair.
  • the outer end of this lateral liner is sealed with epoxy putty sealant. Any waste water that entered the main cavity before sealing is picked up and injected upward, then outward through the exhaust tube during the above mentioned process of filling the main cavity with the settable liquid epoxy.
  • Fig. 13 shows an alternate form of rectangular tubing structure 24 including a channel base element having a bottom segment 26 and an upstanding sidewall 27.
  • This channel shaped segment can be fastened to the cleaned surface of the inside of the sewer line using anchors in a manner similar to fastening rectangular tubes 13 as shown in Fig. 2.
  • the sides of the channel have openings 28 similar to the openings 19 in Figs. 6 and 7 to allow flowing of settable resin.
  • the channel 26 is converted to a rectangular tube by adding a cover 29 which is affixed to the channel by means of snap-on fittings 30.
  • This structure functions similarly to rectangular tubing 13 by allowing the settable resin under pressure to spread out through the openings 28 which are openings defined by the inner wall of the sewer, the plastic sheet to which the now rectangular tube 24 is fastened and the adjacent parallel tube of the same description.
  • Fig. 14 is a second alternative unitary system combining the functions of the rectangular tubes and the plastic sheeting connecting them. It consists of a channel-like segment 31 having a base 32 which is fastened to the inside of the sewer to be repaired by adhesive 33 or a metal fastener 14.
  • the sidewalls 27 of the channel portion 31 have mating snap-on fittings 30 and 34 which when snapped together form a rectangular tube which can function similarly to the device shown in Fig. 13, tubes 13 in Fig. 2 and openings 19 in Figs. 6 and 7.
  • the center section of the integral tube and plastic sheeting assembly is a plastic sheeting element 35 which connects the cap- forming edge of the assembly 36 with the rectangular tube base assembly forming element 37.
  • unitary rectangular tube and plastic sheet forming assemblies can be inserted in the sewer to be repaired, the bases fastened to the inner surface of the sewer by anchors or screws similar to those used to anchor the rectangular tubes in Figs. 2-5, and successively snapped together edge to edge to line the sewer line with settable plastic receiving chambers.
  • these integral rectangular tube forming/plastic sheet assemblies do not closely match the circumference of the inner surface of the sewer to be repaired, these assemblies should be put in place with an opening left at the top which can be closed by covering with a strip of plastic sheeting wide enough to cover the opening and which is held in place by an adhesive or plastic welding.
  • the opening can be covered with a piece of the assembly shown in Fig. 14 slit lengthwise down the middle with the mid- portions of the plastic sheeting portions overlapping and fastened together by use of adhesive or plastic welding techniques .
  • the repaired liner offers structural integrity because it will be a single rigid unit which is fixed within the conduit pipe or tunnel being repaired.
  • the added repair portion is the epoxy liquid when cured is literally molded to the inner surface of the conduit under repair and thus conforms to every projection or cavity which existed in the original structure.
  • the finished plastic liner is locked into place preventing or strongly resisting longitudinal movement of the repair in the sewer lines or conduit.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Sewage (AREA)

Abstract

L'invention concerne un procédé amélioré de réparation de canalisations d'égout, de conduites de distribution d'eau, de galeries, de cuves de stockage et analogues. Ce procédé se base sur l'utilisation de charges choisies à base de cendres volantes, ce qui permet de réduire les coûts de matériaux et d'améliorer la résistance structurale du système final. Pour accomplir les réparations, on assemble un système de cavité (13, 15, 17) ancré aux canalisations (10) à réparer, on prépare un mélange approprié de résine liquide et des charges choisies, puis on remplit séquentiellement la cavité de ce mélange de résine et de charges. Ce procédé permet de réduire la probabilité de piéger de l'air et des eaux usées. En outre, les structures ainsi réparées acquièrent l'avantage d'un support mécanique supplémentaire.
PCT/US1999/010471 1999-02-17 1999-05-27 Procede et materiau pour la reparation de conduits et analogues WO2000049322A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41855/99A AU4185599A (en) 1999-02-17 1999-05-27 Method and material for repair of conduits and the like

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25146199A 1999-02-17 1999-02-17
US09/251,461 1999-02-17

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008200548B1 (en) * 2008-02-06 2008-06-05 Reginald Charles Bourne An Apparatus and Method for Internally Lining an Elongate Member
CN104154382A (zh) * 2014-08-08 2014-11-19 深圳市巍特工程技术有限公司 一种管道修复方法
WO2019171801A1 (fr) * 2018-03-05 2019-09-12 株式会社湘南合成樹脂製作所 Entretoise pour le réglage de position d'un tuyau de rénovation, et procédé de rénovation de tuyau utilisant ladite entretoise

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678370A (en) * 1984-12-04 1987-07-07 Danby Pty. Ltd. Sewer renovation system
US4956032A (en) * 1988-04-28 1990-09-11 Keller Industries Ltd. Method of grouting using a vacuum
US5101863A (en) * 1988-05-02 1992-04-07 Rib Loc Australia Pty. Ltd. Rehabilitating underground pipes with expanding helically wound liner
US5241993A (en) * 1989-12-06 1993-09-07 Stephens Patrick J Method for grouting cavities using a pumpable cement grout
US5269630A (en) * 1993-02-02 1993-12-14 Power Lift Foundation Repair Slab lifter
US5928447A (en) * 1997-04-03 1999-07-27 Gianfrancisco; Thomas Conduit repair and interior reconstruction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678370A (en) * 1984-12-04 1987-07-07 Danby Pty. Ltd. Sewer renovation system
US4956032A (en) * 1988-04-28 1990-09-11 Keller Industries Ltd. Method of grouting using a vacuum
US5101863A (en) * 1988-05-02 1992-04-07 Rib Loc Australia Pty. Ltd. Rehabilitating underground pipes with expanding helically wound liner
US5241993A (en) * 1989-12-06 1993-09-07 Stephens Patrick J Method for grouting cavities using a pumpable cement grout
US5269630A (en) * 1993-02-02 1993-12-14 Power Lift Foundation Repair Slab lifter
US5928447A (en) * 1997-04-03 1999-07-27 Gianfrancisco; Thomas Conduit repair and interior reconstruction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008200548B1 (en) * 2008-02-06 2008-06-05 Reginald Charles Bourne An Apparatus and Method for Internally Lining an Elongate Member
CN104154382A (zh) * 2014-08-08 2014-11-19 深圳市巍特工程技术有限公司 一种管道修复方法
WO2019171801A1 (fr) * 2018-03-05 2019-09-12 株式会社湘南合成樹脂製作所 Entretoise pour le réglage de position d'un tuyau de rénovation, et procédé de rénovation de tuyau utilisant ladite entretoise
JPWO2019171801A1 (ja) * 2018-03-05 2021-03-04 株式会社湘南合成樹脂製作所 更生管の位置調整用スペーサー及びこれを用いた管更生工法
JP7260185B2 (ja) 2018-03-05 2023-04-18 株式会社湘南合成樹脂製作所 更生管の位置調整用スペーサー及びこれを用いた管更生工法

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