|
|
|||||
|
|
Nov 22, 2004 In non-man-accessible as well as in man-accessible sewers, localized damage and/or affected sections of the sewer can be sealed or statically stabilized by the insertion of internal sleeves. The processes can be divided into the following groups:
|
||||
|
|
|||||
|
|
Nov 22, 2006
|
||||
|
|
Nov 22, 2006
|
||||
|
|
Nov 22, 2006
|
||||
|
|
Nov 22, 2006 |
||||
|
|
Nov 13, 2006 Repair of Concrete, Reinforced Concrete and Brick Manholes – Part 2: Climbing Aids, Defects, Joints
|
||||
|
|
Nov 13, 2006 Repair of Concrete, Reinforced Concrete and Brick Manholes – Part 2: Climbing Aids, Defects, Joints
|
||||
|
|
Nov 13, 2006 Repair of Concrete, Reinforced Concrete and Brick Manholes – Part 2: Climbing Aids, Defects, Joints
|
||||
|
|
Nov 13, 2006 Repair of Concrete, Reinforced Concrete and Brick Manholes – Part 2: Climbing Aids, Defects, Joints
|
||||
|
|
Nov 13, 2006 Repair of Concrete, Reinforced Concrete and Brick Manholes – Part 2: Climbing Aids, Defects, Joints
|
||||
|
|
Nov 13, 2006 Repair of Concrete, Reinforced Concrete and Brick Manholes – Part 2: Climbing Aids, Defects, Joints
|
||||
|
|
|
||||
|
|
(Image: 55125 - Titelbild Dokumentation) Proess: Re-jointing corroded masonry joints, crack injection, repair of damaged laterals Title: Repair of masonry sewage collectors and manholes while retaining the original masonry by rehabilitation of the joints and crack injections. Location: Position in the road cross section of a German main road Limiting values:
|
||||
|
|
The rehabilitation of the masonry collectors is achieved by injection of the existing cracks and re-jointing the corroded masonry joints. With this method the corrosion protection of the collectors and their partly insufficient stability as shown by the calculations is again established. In order to determine the quality standards in the execution of the masonry rehabilitation as regards materials and procedures, three reference fields were carried … |
||||
|
|
Sewer cleaning Corroded or loose jointing material, blooms, bulges, foreign matter (e.g. greases or oils) growths, dust and other dirt are removed by means of high-pressure jets with a flushing pressure of maximum 150 bar. Removing loose jointing material The butt and bed joints in the region of the springing line are cleaned out up to a hard underground but not more than 5 cm deep due to the fact that the joint mortar can soften and parts of it can … |
||||
|
|
Re-jointing the previously cleaned-out joints Ground and cleaned joints are re-filled up to the joint underground cavity with the Sewament 40 corrosion-resistant cement mortar of the Mapei Company making sure that there are no bad parts. The material used is first processed with a manually filled hand cartridge filler. The joints are filled-in from a corrosion depth of 1 cm (after cleaning). Creating the fresh mortar For creating the repair mortar, … |
||||
|
|
Injection of cracks in the crown The cement-bound ERGELIT Kombina I injection mortar is mixed using a drilling machine with a stirrer attachment by continuously adding dry mortar and make-up water. After filling the fresh mortar into the pressure vessel, this is sealed and attached to the compressor.
|
||||
|
|
A final high-pressure flushing is carried out in order to clean the rehabilitated section before acceptance. The sewer is only optically tested for leaks, i.e. it is optically inspected for infiltrating groundwater. The last working step is the cleaning of the construction site. |
||||
|
|
Mar 22, 2011 Repair of an accessible brick sewers and manholes while preserving the exposed masonry by joint rehabilitation and crack injection. |
||||
|
|
(Image: 19347 - Titelbild Dokumentation) Process: Stainless steel sleeve 'Stuttgarter Hülse' Title:epair of HD-PE drain pipe of nominal sizes DN 150 to DN 350 with the Location: Railway embankment Limiting conditions:
|
||||
|
|
Machines and equipment
Tools
|
||||
|
|
Site equipment Site equipment includes traffic safety, provision and preparation of storage surfaces for equipment and material as well as the provision of power and water supplies. In this case, due to the isolated position of the section along a railway line, the site arrangements involved considerable effort. On the one hand, access to the path of the pipe was usually only possible via field paths and construction roads, and, on the other hand, … |
||||
|
|
Cleaning the Sewer The section to be rehabilitated must be free from deposits and other flow obstacles. In this case it is cleaned by means of the high-pressure jetting method. If obstacles are found which cannot be removed by this method of cleaning then they are removed using a sewer milling robot. The results of the cleaning are rechecked by TV inspection and documented before the start of rehabilitation. Inspection Before beginning the repair works, … |
135 search results:
