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Nov 22, 2004 Rehabilitation and Maintenance of Drains and Sewers Sealing of Joints and Pipe Joints with the Aid of Sealing Materials The seal is to be inserted into the butt joint at the inside of the sewers. The back filling of the joint must have sufficient resistance so that the joint sealing mass can be properly inserted and smoothed [Engel89]. The back filling material used should be a circular profile of plastics foam (diameter 10 to 50 mm). (Image: Joint without joint strip [NN73])It is recommended, before the insertion of the joint sealing mass, to insert a strip of polyethylene … |
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Nov 22, 2004 One possibility to later seal joints and pipe joints in man-accessible nominal size regions is with the insertion of sealing materials (elastic sealing media and plastic sealing media) in accordance with DIN 19543 [DIN19543:1982] and EN 476 [DINEN476:1997] as well as joint sealing masses [Barte80] [Werse80]. DIN 19543 [DIN19543:1982] has been replaced since August 1997 by EN 476 [DINEN476:1997]. As this latter does not specifically deal with sealing … |
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The process was developed for the repair of locally limited damage in sewer pipes and sewers with circular cross sections in the nominal size range DN 150 to DN 600 with widths of up to 4.00 mm and ovoid cross sections with comparable dimensions. The process is independent of the pipe material [GSTT1/2]. The dimensions of the resin soaked glass weave depends on the following pipe-specific limiting conditions:
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Short hose processes are carried out from available manholes. In preparation for the work, the section of the sewer as well as the connecting sewers must first be closed off and taken out of service. The sewer must be cleaned and the exact positions and dimensions of the respective damage as well as connections must be optically inspected; if necessary, the sewer should also be calibrated. Any flow obstacle that have been found and that could hinder … |
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In the case of the Partliner™ process, the carrier material used for the epoxy resin is an acid resistant ECR (aluminium-lime silicate-glass) web with a thickness of 2 mm. The glass fibre mat is made up at site in accordance with the length of the damaged region (550 - 3000 mm) and the nominal size of the sewer in such a way that both of the end regions of the mat overlap by at least 100 mm. Larger wall thicknesses (up to 6 mm) are achieved by several … |
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After completing the work, a TV inspection (Bild 5.2.3.2.3.1.1.1.3) as well as a leaktightness test according to EN 1610 [DINEN1610:1997] (Abschnitt 4.5.1) must be carried out. After this, the rehabilitated sewer can be placed in service again. Further representatives of this group of processes in alphabetical sequence with their technical parameters and areas of application are presented in Tabelle 5.2.3.2.3.1.1.1.4. (Table: Comparison processing … |
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Apr 06, 2005 |
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Feb 16, 2011 (Image: Brochier Spotliner - Structure of the short hose with reference to [FI-Broch] [Image: S&P GmbH]) In the Brochier Spotliner Process, the packer for the particular rehabilitation process is specially made to suit whereby the rehabilitation lengths can be variable.. In total, 5 hoses are required for the structure of the packer and the actual GRP short hose (Bild 5.2.3.2.3.1.1.2). The first 3 hoses are inserted into each other in the above-mentioned … |
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Nov 22, 2004 In the following, the repair of sewer pipes and sewers is described using as example the Partliner Process [FI-KMG]. |
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Feb 16, 2011 In principle, all the short hose processes mentioned above are also suitable for laterals when they are designed for the nominal size range = 100 mm and corresponding manholes for the introduction of the apparatus are available. Special developments, for instance, are the MIDLINER process [FI-KMG] as well as the Flexo-Lining process. The area of application of the MIDLINER process (Bild 5.2.3.2.3.1.2) (Bild 5.2.3.2.3.1.2) (Bild 5.2.3.2.3.1.2) ranges … |
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Nov 22, 2004 The following processes, among others, for the repair of branch connections based on short hoses can be used:
In both processes, the repair is carried out from the main sewer after cleaning and milling down any possible projecting nozzle parts. As regards the preparatory and finishing work and the testing, the work described for the Partlinerâ„¢ process should be carried out (Abschnitt 5.2.3.2.3.1.1.1.1). The SIDELINER-… |
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This process group is characterised by a woven sleeve soaked in synthetic resin, which, with the aid of a packer that is inflatable by air, water or steam, is transported to the damage location in the sewer and pressed against the internal wall of the sewer (Bild 5.2.3.2.3.1) |
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One representative of the short hose process based on cement as a binder is the ERGELIT shortliner process. According to the manufacturer, it can be used in circular cross sections DN 150 to DN 600 for the repair of cracks and smaller pipe breaks [FI-Herme]. Pre-mixed dry grout type ERGELIT Kombina KT is applied in a thickness of approx. 2 mm and a length up to 60 cm max. onto a packer. Then ERGELIT strip is dipped about 2 min. into water. After allowing … |
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Internal sleeves for repair of locally limited damage are characterised by a pre-deformation by means of longitudinal slots and overlapping for conveying and the subsequent return forming and shaped stressing at the point of damage to be repaired. As regards the preparatory and finishing work and the testing, the work described for the Partlinerâ„¢ process should be carried out (Abschnitt 5.2.3.2.3.1.1.1.1). Representatives of this group of processes … |
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Link-Pipe utilises an overlapping stainless steel sleeve for the nominal size range DN 150 to DN 600 literature('0000094057'), which possesses a longitudinal slot and is provided on the outside with a foam rubber gasket soaked in PU grout material. The internal sleeve is conveyed with the aid of a packer and under the supervision of a camera, to the point of damage and is there expanded by means of pipe diameter dependent installation pressures of … |
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With this type of internal sleeve, the sealing is effected by a layer on the stainless steel sleeve that consists of a two-component adhesive based on epoxy resin. This internal sleeve is also conveyed to the point of damage by means of a packer and there expanded until the quick seal clicks in. This causes the internal sleeve and the old pipe to adhere together. A representative of this type is, among others, the RIVA Process [FI-RICO] for the nominal … |
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A representative of this process group is the Link-Pipe Process [FI-Link] [FI-Isekic] designed for the man-accessible nominal size range. The internal sleeve consists of six PVC-U pipe segments that are connected to each other by hinges (Bild 5.2.3.2.3.6) (Bild 5.2.3.2.3.6), which, on the outside, possess a foam rubber gasket soaked with a PE grout. For the installation process, the sleeve is folded into an octagon shape and pushed on to a press … |
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Feb 16, 2011 This process is used exclusively in man-accessible sewers or manholes. After a careful cleaning of the pipe walling on both sides of the leaking position, an elastomer sealing sleeve is applied by hand over the region to be sealed and is pressed against the pipe wall surfaces by means of bracing strips (Bild 5.2.3.2.3.7.1) (Bild 5.2.3.2.3.7.1) (Bild 5.2.3.2.3.7.1) (Bild 5.2.3.2.3.7.1) (Bild 5.2.3.2.3.7.1). Both the Weco-Seal process [FI-Wegne] and … |
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Feb 16, 2011 The Weco-Seal Process, patented in 1964, as well as the Amex-10 System, is used mostly for the internal sealing of leaking pipe joints and lateral cracks in man-accessible sewers of DN 500 to approx. DN 3000 (in the Federal Republic of Germany, only pipes from DN 600 are man-accessible, see Abschnitt 1.3). The sleeves for the Amex-10 system are available in widths of 260 mm, 366 mm and 655 mm [FI-Amex]. The processes were originally developed for the … |
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Feb 16, 2011 Before carrying out the sealing work, the affected section of the sewer is taken out of service, whereby, depending on requirements, drainage measures (Abschnitt 5.5) should be undertaken. Generally, material and equipment conveyance is carried out through the manholes. In certain cases, where better access may be required, the manhole throat including the cover ring and the cover may need to be removed (Abschnitt 1.8). The regions of the points of … |
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Feb 16, 2011
The sleeve, whose diameter is adapted to that of the pipe, is positioned manually and adapted to the pipe region to be sealed such that the sealing lips and straps are situated right and left of the point of damage at the … |
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Feb 16, 2011 After completion of the sealing works, the section of the sewer is cleaned out and, if necessary the manhole is rebuilt and the pipe is taken into use again. |
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Feb 16, 2011 Approximately 3 persons are required to carry out the work. On average, 7 to 8 sleeves can be installed per 8-hour shift. The following equipment is required:
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Feb 16, 2011 With the Weco-Seal process and the Amex-10 System it is possible to seal pipe joints, lateral and longitudinal cracks in all types of piping and materials except rectangular cross sections and masonry sewers. The sealing sleeves are elastic and thus relatively insensitive to small positional deviations. Disadvantages:
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Nov 22, 2004 |
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