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Sep 24, 2007 Trenchless Technology for Installation of Cables and Pipelines Concrete and reinforced concrete jacking pipes with integrated corrosion protection With the KeraLine jacking pipes, the corrosion protection consists of ceramic split tile (also called ceramic plates) to EN 186 [DINEN186] with the dimensions of 240 mm x 150 mm (Bild 13.3.2.2). The split tiles on their rear side posses dovetail shaped strips and are combined at the factory into a large preformed vitrified clay plate element by means of a tight connection in the joints with epoxy resin (Bild 13.3.2.2). The plate elements preformed … |
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Sep 24, 2007 Trenchless Technology for Installation of Cables and Pipelines Concrete and reinforced concrete jacking pipes with integrated corrosion protection With pipes of concrete or reinforced concrete with plastic lining, the inner lining is of plastic in the form of strips, plates or pipe-shaped bodies corresponding to the "Zulassungsgrundsätze für die Auswahl und Anwendung von Innenauskleidungen aus Kunststoff für erdverlegte Abwasserleitungen und -schächte" (Conditions for certification for the choice and application of inner liners of plastics for directly laid sewers and shafts) issued by the … |
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Sep 24, 2007 Trenchless Technology for Installation of Cables and Pipelines Concrete and reinforced concrete jacking pipes with integrated corrosion protection Jacking pipes of reinforced concrete with GRP possess an inner liner of GRP pipes to DIN 16868 [DIN16868-1] or DIN 16869 (centrifugally cast) [DIN16869] [FI-Eterna] [FI-Hume99]. Jacking pipes of reinforced concrete with GRP are offered in the nominal size range of 300 ≤ DN/ID ≤ 2200. Up to DN 800, they can be supplied with a length of l = 2000 mm, from DN/ID 1000 with l = 3000 mm (Tabelle 13.3.2.4). (Table: Supply programme for reinforced concrete-… |
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Fibre cement pipes to EN 588-1 [DINEN588:2000] are made of cement or calcium silicate that is derived by a chemical reaction of silicon and limy materials. Reinforcing is provided by fibres. The cement must correspond to the national standards (e.g. in the Federal Republic of Germany: DIN 1164 [DIN1164e] Portland-, Iron Portland-, blast furnace- and trass cement or EN 197-1 [DINEN197-1a]). According to EN 512 [DINEN512:1994] and EN 588-1 [DINEN588:… |
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Vitrified clay jacking pipes are manufactured from suitable clays with the addition of fireclays and tightly fired to sintering at 1210°C. During firing, a previously applied glazing material also melts irreversibly with the pieces into an internal and, if desired, external glazing, which, in contrast to other types of subsequently applied pipe coatings, cannot be dissolved by water or steam pressure. The glazing creates a very smooth surface which … |
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(Image: Cast basalt jacking pipe (EUTIT) [FI-Eutit]) Cast basalt is created by melting non-metallic components at 2000°C and by their subsequent crystallization. The final product is a three-phase system consisting of corundum, baddeleyite and glass phase with a very smooth surface. These minerals give the cast basalt a high compressive strength and especially great hardness (Mohs' hardness 8) and resistance to high temperatures, corrosion and abrasion. |
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Jacking pipes of reinforced concrete with steel have only been on the market for a short period and up to now have only been used in the nominal size DN/ID 1200 for pressurized water pipes. The inliner consists of a welded steel pipe to DIN EN 10220 [DINEN10220] or DIN 2460 [… |
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Buried ductile cast iron pipes are protected … |
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The basis for ductile cast iron jacking pipes with jackets are the mass-produced ductile cast pipes with cast on sockets in accordance with Abschnitt 13.8.1 that receive a jacket of constant external diameter over their whole length and thus also fulfil the requirements of jacking pipes that are installed by means of pressing-in or pushing-in. With reference to the type of jacket a distinction is made between:
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(Image: Reinforced concrete with cast iron jacking pipe [FI-Gobai]) Jacking pipes of reinforced concrete with cast iron (Bild 13.8.3) with tensile restrained joints have only been on the market for a short time and up to now have only been used in the nominal size DN/ID 1200 for pressurized water and sewer piping [FI-Gobai] [Schma94]. The inliner consists of a ductile cast pipe with cast-on socket to EN 545 [DINEN545:2002] and EN 598 [DINEN598:1994] … |
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Ductile cast iron jacking pipes possess a smooth cylindrical outer form and are utilized for jacking gravity and pressurized pipelines by means of pressing-in or pushing-in. The nominal size range is 250 ≤ DN/ID ≤ 450 (Tabelle 13.8.4) [FGR96]. The length is 2 m. (Table: Supply programme for ductile cast iron jacking pipes to EN 598 [DINEN598] and EN 545 [DINEN545a] with cement mortar lining, external zinc cover with cover sheating and cast-on non-… |
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Glass fibre reinforced plastics - GRP (UP) belong to the class of duroplastic synthetic materials that can no longer be melted under the influence of temperature. The starting materials for GRP jacking pipes are reaction resins (epoxide-, … |
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PRC (polyester resin concrete, also called polymer concrete) jacking pipes according to DIN 54815 part 1 [DIN54815:1998] are made of a mixture of mineral and quartz additivesin a reduced-pore grading curve to DIN 1045 [DIN1045:2001] and reaction resin based on unsaturated polyester resins (UP resins) with properties according to DIN 16946-2 [DIN16946-2:1989]. The polyester resin is very resistant to aggressive media (pH range 1.0 to 10) and the quartz … |
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Pipes of cross-linked polyethylene (PE-X) were put into use in the middle of the 1990s for direct laying after various methods (physical and chemical cross-linking, especially the peroxidic cross-linking) made the cross-linking of molecules possible. In peroxidic cross-linking, high molecular weight high density PE is formed into a thermosetting pipe by the addition of peroxide under high pressure at a temperature of 200 to 240°C and cross-linked … |
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Besides the possibility of manufacturing pipes throughout of one material (full wall pipes), there are also several new developments for jacking pipes of plastics which partially improve the properties of the pipes by combining them with other materials. Among these developments are [Rauch01] :
In order to produce pipes with dimensionally added … |
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Polypropylene (PP) is a member of the semi-crystalline thermoplastic (polyolefin) group. It is manufactured by the polymerization of ethylene and has a comparable chemical resistance to PE, is also normally combustible and non-adhesive. Mostly, PP-HM pipes are used in trenchless installation. PP-HM means polypropylene with a higher E modulus than is usual with PP pipes (Tabelle 13.11.2). (Table: Material properties for PP-HM) The standards applicable … |
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PVC-U (polyvinylchloride, free of plasticiser) belongs to the thermoplastic group. It is a polymer of vinylchloride, which is made of ethylene (natural oil or gas) and chlorine (of NaCl) and to which thermal stabilisers and lubricants are added for pipe production [Rosch00]. Besides the hardness and form stability, a characteristic property of PVC-U is the high degree of resistance to acids, alkalis, alcohols, oils, fats, aliphatic hydrocarbons and … |
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