Comparison of the service life, life-cycle costs and assessment of hybrid and traditional reinforced concrete through a case study of bridge edge beams in Sweden
Artikel i vetenskaplig tidskrift, 2021

The edge beams of reinforced concrete bridges with de-icing salts sprayed experience extensive corrosion damage. The average service life of edge beams needing replacement in Sweden has been reported as only 45 years, causing great economic loss to both owners and users. Hence, finding a durable solution for edge beams would benefit society. Hybrid reinforced concrete structures, produced by adding a low-to-moderate fibre content into traditional reinforced concrete, can effectively limit the service crack width and improve resistance to chloride-induced corrosion damage. In this paper, different alternatives of hybrid and traditional reinforced edge beams were designed for a case study. The service life of the alternatives was compared by conducting chloride diffusion calculations and by applying a corrosion-induced cracking model. The economic and environmental (indicated by greenhouse gas emissions) benefits of using hybrid reinforced edge beams were assessed by life-cycle cost analysis and life-cycle assessment. The results showed that the service life of edge beams made of hybrid reinforced concrete can be prolonged by over 58%, thereby enabling a significant reduction in the total life-cycle costs and annual total greenhouse gas emissions.

service life

life-cycle assessment

life-cycle cost analysis

Hybrid reinforced concrete

crack model

reinforcement corrosion

Författare

Teresa E Chen

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Carlos Gil Berrocal

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Ingemar Löfgren

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Karin Lundgren

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Structure and Infrastructure Engineering

1573-2479 (ISSN) 1744-8980 (eISSN)

Vol. In Press

Hybridarmerade betongkonstruktioner i kloridhaltig miljö: beständighet, säkerhet och livscykelkostnader

Svenska Byggbranschens Utvecklingsfond (SBUF) (13683), 2019-10-01 -- 2020-08-31.

Trafikverket (TRV 2018/36506), 2018-06-01 -- 2020-08-30.

Cementa (17243), 2018-06-01 -- 2020-08-30.

Drivkrafter

Hållbar utveckling

Innovation och entreprenörskap

Ämneskategorier

Byggproduktion

Infrastrukturteknik

Husbyggnad

Kompositmaterial och -teknik

Styrkeområden

Materialvetenskap

DOI

10.1080/15732479.2021.1919720

Mer information

Senast uppdaterat

2021-06-01