Use of EPS Bedding Materials in Pipeline Installation
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 10, Issue 1
Abstract
Pipeline construction in open trenches requires an appropriate degree of compaction of the soil around and below the springline, and especially in the haunches area, to ensure embedment on the contact surface of the trench. However, due to the lack of space in many inner-city areas with large numbers of different pipes crossing each other, it can sometimes be difficult in practice to carry out a proper soil compaction in accordance with regulations. This in turn may lead to damage, not only to the newly installed pipe but also to surrounding pipes. There are various innovative materials available to effectively provide proper embedment, and one cost-effective alternative is the use of expandable polystyrol (EPS) bedding materials. These prefabricated sections of hard foam are specially tailored to fit different types of pipe. They substitute for soil in the haunches area to ensure an optimized degree of embedment. In addition, it is possible to install two pipes on top of each other using EPS, which greatly reduces the amount of excavated soil required for backfill. The lightweight construction also simplifies handling on site. This paper presents an examination of the state-of-the-art on the use of EPS bedding materials in pipeline installation, focusing on their mechanical properties, quality control and durability against chemical, physical, and biological environmental impacts. The long-term behavior of installed EPS materials and the possibility of their use on several construction sites are assessed. In addition, using finite-element calculations, stress and deformation of installed EPS material with particular regard to creeping and buoyancy effects are investigated. Finally, the results from the product tests, experimental results and calculations, together with recommendations for their practical application are presented.
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References
ATV-DVWK-A 127. 2000. “Statische Berechnung von Abwasserkanälen und–leitungen” [Static calculation of sewers and pipes]. [In German.] ATV-DVWK-A 127. Hennef, Germany: Auflage.
BASF. 2007. “Informationen” [Informations]. [In German.] Ludwigshafen, Germany: BASF.
Beinbrech, G., and F. Hohwiller. 1998. “Hartschaum aus Styropor als Deformations- und Polsterschicht” [Hard foam of styropor as deformation- und cushion layer]. [In German.] Tiefbau. Heft 6/1998. Berlin: Erich Schmidt Verlag GmbH & Co. KG.
Bosseler, B., T. Birkner, O. Sokoll, and T. Brüggemann. 2003. “Umsetzung der Selbstüberwachungsverordnung Kanal (SüwV Kan) bei den kommunalen Netzbetreibern und Wasserverbänden in NRW” [Implementation of the new self-monitoring regulation for sewers (SüwV Kan) at the municipal network operators and water boards in North-Rhine Westphalia (NRW)]. [In German.] Gelsenkirchen, Germany: Institut für Unterirdische Infrastruktur.
Bosseler, B., M. Liebscher, B. Diburg, and A. Downar. 2007. “EPS-Bettungskissen in der offenen Bauweise” [EPS-bedding cushions in open construction]. [In German.] Gelsenkirchen, Germany: Institut für Unterirdische Infrastruktur.
DIN. 1997. “Verlegung und Prüfung von Abwasserleitungen und–kanälen” [Construction and testing of drains and sewers]. [In German.] DIN EN 1610. Berlin: Beuth.
DIN. 2001. “Wärmedämmstoffe für Gebäude—Werkmäßig hergestellte Produkte aus expandiertem Polystyrol (EPS)—Spezifikation” [Heat insulation materials for buildings—Industrially manufactured products of expanded polystyrol (EPS)—Specification]. [In German.] DIN EN 13163. Berlin: Beuth.
FGSV (Forschungsgesellschaft für Straßen- und Verkehrswesen—Arbeitsgruppe Erd- und Grundbau). 1995. “Merkblatt für die Verwendung von EPS-Hartschaumstoffen beim Bau von Straßendämmen” [Instruction sheet for the use of EPS-hard foam in the construction of road embankments]. [In German.] FGSV e.V., Köln.
Krollmann, N. 2006. “Verhalten von EPS-Hartschaumstoffen unter langzeitiger Druckbeanspruchung” [Behaviour of EPS-hard foam material under long-term compresive stress]. [In German.] Berlin: Ernst & Sohn.
Technische Werke Burscheid. 2016. “Projektantrag auf Förderung des Forschungsvorhabens: ‘Vergleichende Untersuchung von zeitweise fließfähigen selbstverdichtenden Verfüllbaustoffen’ (ZFSV), IKT—Warentest‚ Flüssigboden” [Project proposal for funding of the research project: “Comparative investigation of temporarily flowable and self-compacting backfill materials” (TFSM), IKT—Product test liquid soil]. [In German.] Gefördert durch das Ministerium für Klimaschutz, Umwelt, Landwirtschaft, Natur- und Verbraucherschutz des Landes NRW, Burscheid.
Triantafyllidis, T., B. Bosseler, I. Arsic, and M. Liebscher. 2006. “Ausführungsrisiken beim Einsatz von Bettungs- und Verfüllmaterialien im Rohrleitungsbau” [Impementation risk in the use of bedding and backfilling materials in pipeline construction]. [In German.] Bochum, Germany: Ruhr-Universität Bochum, Lehrstuhl für Grundbau und Bodenmechanik.
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©2018 American Society of Civil Engineers.
History
Received: Mar 12, 2018
Accepted: Aug 7, 2018
Published online: Dec 14, 2018
Published in print: Feb 1, 2019
Discussion open until: May 14, 2019
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