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Continuous preventive bridge maintenance in Sweden - Field experiment on the effect of washing on concrete bridges
RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.
KTH Royal Institute of Technology, Sweden.
Cementa AB, Sweden.
RISE - Research Institutes of Sweden, Built Environment, CBI Swedish Cement and Concrete Research Institute.ORCID iD: 0000-0001-6920-1458
2019 (English)In: Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures, International Federation for Structural Concrete , 2019, p. 1135-1141Conference paper, Published paper (Refereed)
Abstract [en]

Bridges are an important part of the infrastructure. For the bridges to have the longest possible service life with minimum repairs, the maintenance is of great importance. One type of bridge maintenance that is rarely researched is the continuous preventive maintenance. The continuous preventive maintenance consists of removal of vegetation, cleaning of bridge joints and drainage systems as well as high-pressure washing of the structure. The effects of washing is heavily discussed but not properly researched. A study on the effectiveness of washing concrete is therefore being conducted. A field experiment has been initiated where concrete specimens are installed on an edge beam of a road bridge. The specimens are of two recipes where one represents an old bridge with rather high water-cement ratio and the other one represents a new bridge with a low water-cement ratio. 50% of the specimens are washed annually, while the others are not. Each year samples are collected and tested for a chloride profile. The results for the first year of exposure have been determined. They are promising but are still only very preliminary. The effect of washing, if any, will be visible after a longer exposure.

Place, publisher, year, edition, pages
International Federation for Structural Concrete , 2019. p. 1135-1141
Keywords [en]
Bridge maintenance, Field experiment, Preventive maintenance, Washing, Bridges, Cements, Chlorine compounds, Concretes, Chloride profiles, Concrete specimens, Drainage systems, Effect of washing, High pressure, Preventive bridge maintenance
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-38964Scopus ID: 2-s2.0-85066104402ISBN: 9782940643004 (print)OAI: oai:DiVA.org:ri-38964DiVA, id: diva2:1324639
Conference
fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures, 27 May 2019 through 29 May 2019
Available from: 2019-06-14 Created: 2019-06-14 Last updated: 2019-06-14Bibliographically approved

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Trägårdh, Jan

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  • apa
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