TFSB as Bedding Material in District Heating Pipe Construction–Scientifically Proven Long-Term Experience

Bernd Wagner; Stefan Hay; Thomas Neidhart; Florian Spirkl; Michael Ried; Louis Zrenner; Ingo Weidlich; Eugen Gabriel; Timo Banning

doi:10.1007/978-3-032-09844-3_10

TFSB as Bedding Material in District Heating Pipe Construction–Scientifically Proven Long-Term Experience

Bernd Wagner^*, Stefan Hay, Thomas Neidhart, Florian Spirkl, Michael Ried, Louis Zrenner, Ingo Weidlich, Eugen Gabriel, Timo Banning

^*Corresponding author for this work

Abstract

Following the explanation of the increasing importance of alternative backfill materials like TFSB, TFSB and their status in terms of science and technology are depicted. Selected results of the research project FW-ZFSV 4.0 are presented: computer-aided static calculation, in situ long term loading of district heating pipes in TFSB and sand, quality assurance and resource conservation. The conclusions provide an overall assessment of the use of TFSB in district heating pipe construction.

Original language	English
Title of host publication	Proceedings of the 19th International Symposium on District Heating and Cooling
Subtitle of host publication	The International Research Conference on Heating and Cooling Networks—Under the Supervision of IEA DHC
Editors	Dirk Vanhoudt
Pages	99-108
Number of pages	10
Volume	1700
DOIs	https://doi.org/10.1007/978-3-032-09844-3_10
Publication status	Published - 24 Jan 2026
Event	19th International Symposium of District Heating and Cooling, IEA DHC 2025 - Genk, Belgium Duration: 7 Sept 2025 → 10 Sept 2025

Publication series

Name	Lecture Notes in Networks and Systems
Volume	1700
ISSN (Print)	2367-3370
ISSN (Electronic)	2367-3389

Conference

Conference	19th International Symposium of District Heating and Cooling, IEA DHC 2025
Country/Territory	Belgium
City	Genk
Period	7/09/25 → 10/09/25

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 07 Affordable and Clean Energy

Keywords

Design
District heating networks
Planning
Static calculation
TFSB
ZFSV

Access to Document

10.1007/978-3-032-09844-3_10Licence: CC BY

Cite this

Wagner, B., Hay, S., Neidhart, T., Spirkl, F., Ried, M., Zrenner, L., Weidlich, I., Gabriel, E., & Banning, T. (2026). TFSB as Bedding Material in District Heating Pipe Construction–Scientifically Proven Long-Term Experience. In D. Vanhoudt (Ed.), Proceedings of the 19th International Symposium on District Heating and Cooling: The International Research Conference on Heating and Cooling Networks—Under the Supervision of IEA DHC (Vol. 1700, pp. 99-108). (Lecture Notes in Networks and Systems; Vol. 1700). https://doi.org/10.1007/978-3-032-09844-3_10

Wagner, Bernd ; Hay, Stefan ; Neidhart, Thomas et al. / TFSB as Bedding Material in District Heating Pipe Construction–Scientifically Proven Long-Term Experience. Proceedings of the 19th International Symposium on District Heating and Cooling: The International Research Conference on Heating and Cooling Networks—Under the Supervision of IEA DHC. editor / Dirk Vanhoudt. Vol. 1700 2026. pp. 99-108 (Lecture Notes in Networks and Systems).

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title = "TFSB as Bedding Material in District Heating Pipe Construction–Scientifically Proven Long-Term Experience",

abstract = "Following the explanation of the increasing importance of alternative backfill materials like TFSB, TFSB and their status in terms of science and technology are depicted. Selected results of the research project FW-ZFSV 4.0 are presented: computer-aided static calculation, in situ long term loading of district heating pipes in TFSB and sand, quality assurance and resource conservation. The conclusions provide an overall assessment of the use of TFSB in district heating pipe construction.",

keywords = "Design, District heating networks, Planning, Static calculation, TFSB, ZFSV",

author = "Bernd Wagner and Stefan Hay and Thomas Neidhart and Florian Spirkl and Michael Ried and Louis Zrenner and Ingo Weidlich and Eugen Gabriel and Timo Banning",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2026.; 19th International Symposium of District Heating and Cooling, IEA DHC 2025 ; Conference date: 07-09-2025 Through 10-09-2025",

year = "2026",

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Wagner, B, Hay, S, Neidhart, T, Spirkl, F, Ried, M, Zrenner, L, Weidlich, I, Gabriel, E & Banning, T 2026, TFSB as Bedding Material in District Heating Pipe Construction–Scientifically Proven Long-Term Experience. in D Vanhoudt (ed.), Proceedings of the 19th International Symposium on District Heating and Cooling: The International Research Conference on Heating and Cooling Networks—Under the Supervision of IEA DHC. vol. 1700, Lecture Notes in Networks and Systems, vol. 1700, pp. 99-108, 19th International Symposium of District Heating and Cooling, IEA DHC 2025, Genk, Belgium, 7/09/25. https://doi.org/10.1007/978-3-032-09844-3_10

TFSB as Bedding Material in District Heating Pipe Construction–Scientifically Proven Long-Term Experience. / Wagner, Bernd; Hay, Stefan; Neidhart, Thomas et al.
Proceedings of the 19th International Symposium on District Heating and Cooling: The International Research Conference on Heating and Cooling Networks—Under the Supervision of IEA DHC. ed. / Dirk Vanhoudt. Vol. 1700 2026. p. 99-108 (Lecture Notes in Networks and Systems; Vol. 1700).

Research output: Chapter in Book (Inbook) /Conference Proceeding › Conference Paper › Research Article/Contribution › peer-review

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AU - Wagner, Bernd

AU - Hay, Stefan

AU - Neidhart, Thomas

AU - Spirkl, Florian

AU - Ried, Michael

AU - Zrenner, Louis

AU - Weidlich, Ingo

AU - Gabriel, Eugen

AU - Banning, Timo

N1 - Publisher Copyright: © The Author(s) 2026.

PY - 2026/1/24

Y1 - 2026/1/24

N2 - Following the explanation of the increasing importance of alternative backfill materials like TFSB, TFSB and their status in terms of science and technology are depicted. Selected results of the research project FW-ZFSV 4.0 are presented: computer-aided static calculation, in situ long term loading of district heating pipes in TFSB and sand, quality assurance and resource conservation. The conclusions provide an overall assessment of the use of TFSB in district heating pipe construction.

AB - Following the explanation of the increasing importance of alternative backfill materials like TFSB, TFSB and their status in terms of science and technology are depicted. Selected results of the research project FW-ZFSV 4.0 are presented: computer-aided static calculation, in situ long term loading of district heating pipes in TFSB and sand, quality assurance and resource conservation. The conclusions provide an overall assessment of the use of TFSB in district heating pipe construction.

KW - Design

KW - District heating networks

KW - Planning

KW - Static calculation

KW - TFSB

KW - ZFSV

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T3 - Lecture Notes in Networks and Systems

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BT - Proceedings of the 19th International Symposium on District Heating and Cooling

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Wagner B, Hay S, Neidhart T, Spirkl F, Ried M, Zrenner L et al. TFSB as Bedding Material in District Heating Pipe Construction–Scientifically Proven Long-Term Experience. In Vanhoudt D, editor, Proceedings of the 19th International Symposium on District Heating and Cooling: The International Research Conference on Heating and Cooling Networks—Under the Supervision of IEA DHC. Vol. 1700. 2026. p. 99-108. (Lecture Notes in Networks and Systems). doi: 10.1007/978-3-032-09844-3_10