UHPFRC-Fertigteilsegmente für einen nachhaltigen und ressourcenschonenden Betonbrückenbau

authored by

Marvin Wilkening, Tobias Schack, Michael Haist, Vincent Oettel

Abstract

UHPFRC Precast Segments for Sustainable and Resource-Efficient Concrete Bridge Construction. Many of the concrete bridges currently in use in Germany are in a deficient condition due to their age or design. However, increased traffic loads also highly contribute to the fact that many of the existing bridges will have to be replaced in the medium term. Due to the many advantages of concrete structures, it can be assumed that concrete bridges will continue to be designed and built in the future. In the light of the increasing consequences of climate change and the pressing need to reduce CO₂ emissions also in the building industry as well, there is an urgent need for research into climate- and resource-friendly as well as sustainable but also economical concrete construction methods. A promising approach to fast, effective and resource-optimized as well as CO₂-efficient construction is the use of high-performance materials such as UHPFRC in combination with precast segmental construction. In this paper, starting from a monolithic box girder bridge made of normal strength concrete, numerical calculations are used to investigate how much material can be saved in segmented box girder bridges by varying the concrete compressive strength (normal and high-strength concrete as well as UHPFRC). The life cycle assessment subsequently carried out on this basis for life cycle phases A1 to A3 showed that, when the material is fully utilized, the use of UHPFRC leads to very resource-efficient and sustainable structures compared with normal- and high-strength concretes.

Organisation(s)

Institute of Concrete Construction
Institute of Building Materials Science

Type

Article

Journal

Beton- und Stahlbetonbau

Volume

118

Pages

788-802

No. of pages

15

ISSN

0005-9900

Publication date

06.11.2023

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Building and Construction

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy, SDG 12 - Responsible Consumption and Production, SDG 13 - Climate Action

Electronic version(s)

https://doi.org/10.1002/best.202300054 (Access: Closed)