Applying the Multi-level Assessment to a Bridge in Service Affected by ASR and DEF in Brazil

Cassandra Trottier*, Diego Jesus De Souza, Mayra De Grazia, José Eduardo de Aguiar, Jayme Kneip Neto, Leandro F. M. Sanchez

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The 043-FA concrete bridge in Brazil was built using aggregates susceptible to alkali-silica reactive (ASR), exposed to conditions enabling the development of delayed ettringite formation (DEF) and is still in service. Over the years, many signs of deterioration developed on various structural elements of the bridge, mostly in the foundation blocks and concrete columns. As such, cores were extracted from the structural concrete elements following in-situ inspections. Therefore, this work presents results from the multi-level condition assessment using the damage rating index (DRI) and the stiffness damage test (SDT) to determine the cause and extent of the damage to the concrete due to ASR coupled with DEF. Consequently, elements show a moderate degree of damage (i.e., 0.10–0.15% expansion) except for one foundation block (i.e., B02 at 0.25–0.30% expansion), which displayed an advanced damage level, thus indicating the bridge’s non-conformity to Brazilian safety protocols.

Original languageEnglish
Title of host publicationProceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete
EditorsLeandro F.M. Sanchez, Cassandra Trottier
Number of pages8
PublisherSpringer
Publication date2024
Pages462-469
ISBN (Print)978-3-031-59421-2
ISBN (Electronic)978-3-031-59419-9
DOIs
Publication statusPublished - 2024
Event17th International Conference on Alkali-Aggregate Reaction in Concrete - Ottawa, Canada
Duration: 18 May 202424 May 2024
Conference number: 17

Conference

Conference17th International Conference on Alkali-Aggregate Reaction in Concrete
Number17
Country/TerritoryCanada
CityOttawa
Period18/05/202424/05/2024
SeriesRILEM Bookseries
Volume50
ISSN2211-0844

Keywords

  • Alkali-silica reaction
  • Delayed ettringite formation
  • Diagnosis and prognosis of aging concrete
  • Multi-level damage assessment
  • Residual expansion assessment

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