Concrete durability based on coupled deterioration by frost, carbonation and chloride

Hannele Kuosa, Miguel Ferreira, Erika Holt

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Concrete performance is traditionally assessed based on deterioration caused by a single mechanism. Yet in field performance, concrete is actually being affected by simultaneous environmental and conditional exposures, possibly with synergetic effect on the degradation rate of concrete. In this paper, the results of a Finnish research project based on assessing coupling deterioration mechanisms are presented. For instance, evaluating how cracks resulting from frost attack influence chloride ingress, or how carbonation changes the surface properties and thus may affect frost-salt scaling and chloride penetration. The research project built on 30+ years of concrete durability research, including 10 years of field station studies. The durability performance was assesses with both accelerated laboratory testing and in situ exposure results from field stations, to more realistically predict long-term performance. All the results together with local weather data served as a basis for thorough modelling, computer simulation and development of service life models. The project was composed of an extensive laboratory testing regime, in parallel to the exposure of several concrete specimens at field stations, also subject to periodic testing. Testing was based on standardized methods, taking into account the effects of ageing and repeated exposure cycles to different conditions as well as field studies. More than 60 different normal strength concrete mixtures were evaluated with a range of cementitious binders and air contents. The final stage of the project addressed improving service life prediction tools based on the laboratory coupled deterioration results. The project results quantitatively support the hypothesis that a holistic approach should be taken to predicting deterioration. The project has addressed improving service life prediction tools based on the laboratory coupled deterioration results and field testing.
Original languageEnglish
Title of host publicationICDC 2012, International Congress on Durability of Concrete, Trondheim, Norway, 18-21 June 2012
Subtitle of host publicationBook of abstracts and proceedings
Place of PublicationTrondheim, Norway
PublisherNorsk Betongforening
Number of pages15
ISBN (Print)978-82-8208-031-6
Publication statusPublished - 2012
MoE publication typeB3 Non-refereed article in conference proceedings

Fingerprint

Carbonation
Deterioration
Durability
Concretes
Service life
Testing
Concrete mixtures
Surface properties
Binders
Aging of materials
Salts
Cracks
Degradation
Computer simulation
Air

Keywords

  • durability
  • frost
  • frost-salt
  • carbonation
  • chloride
  • coupled/interacted deterioration
  • service life
  • field testing

Cite this

Kuosa, H., Ferreira, M., & Holt, E. (2012). Concrete durability based on coupled deterioration by frost, carbonation and chloride. In ICDC 2012, International Congress on Durability of Concrete, Trondheim, Norway, 18-21 June 2012: Book of abstracts and proceedings Trondheim, Norway: Norsk Betongforening.
Kuosa, Hannele ; Ferreira, Miguel ; Holt, Erika. / Concrete durability based on coupled deterioration by frost, carbonation and chloride. ICDC 2012, International Congress on Durability of Concrete, Trondheim, Norway, 18-21 June 2012: Book of abstracts and proceedings. Trondheim, Norway : Norsk Betongforening, 2012.
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Kuosa, H, Ferreira, M & Holt, E 2012, Concrete durability based on coupled deterioration by frost, carbonation and chloride. in ICDC 2012, International Congress on Durability of Concrete, Trondheim, Norway, 18-21 June 2012: Book of abstracts and proceedings. Norsk Betongforening, Trondheim, Norway.

Concrete durability based on coupled deterioration by frost, carbonation and chloride. / Kuosa, Hannele; Ferreira, Miguel; Holt, Erika.

ICDC 2012, International Congress on Durability of Concrete, Trondheim, Norway, 18-21 June 2012: Book of abstracts and proceedings. Trondheim, Norway : Norsk Betongforening, 2012.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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AB - Concrete performance is traditionally assessed based on deterioration caused by a single mechanism. Yet in field performance, concrete is actually being affected by simultaneous environmental and conditional exposures, possibly with synergetic effect on the degradation rate of concrete. In this paper, the results of a Finnish research project based on assessing coupling deterioration mechanisms are presented. For instance, evaluating how cracks resulting from frost attack influence chloride ingress, or how carbonation changes the surface properties and thus may affect frost-salt scaling and chloride penetration. The research project built on 30+ years of concrete durability research, including 10 years of field station studies. The durability performance was assesses with both accelerated laboratory testing and in situ exposure results from field stations, to more realistically predict long-term performance. All the results together with local weather data served as a basis for thorough modelling, computer simulation and development of service life models. The project was composed of an extensive laboratory testing regime, in parallel to the exposure of several concrete specimens at field stations, also subject to periodic testing. Testing was based on standardized methods, taking into account the effects of ageing and repeated exposure cycles to different conditions as well as field studies. More than 60 different normal strength concrete mixtures were evaluated with a range of cementitious binders and air contents. The final stage of the project addressed improving service life prediction tools based on the laboratory coupled deterioration results. The project results quantitatively support the hypothesis that a holistic approach should be taken to predicting deterioration. The project has addressed improving service life prediction tools based on the laboratory coupled deterioration results and field testing.

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BT - ICDC 2012, International Congress on Durability of Concrete, Trondheim, Norway, 18-21 June 2012

PB - Norsk Betongforening

CY - Trondheim, Norway

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Kuosa H, Ferreira M, Holt E. Concrete durability based on coupled deterioration by frost, carbonation and chloride. In ICDC 2012, International Congress on Durability of Concrete, Trondheim, Norway, 18-21 June 2012: Book of abstracts and proceedings. Trondheim, Norway: Norsk Betongforening. 2012