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The corrosion rate in reinforced concrete facades exposed to outdoor environment

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The corrosion rate in reinforced concrete facades exposed to outdoor environment. / Köliö, Arto; Pakkala, Toni A.; Hohti, Harri; Laukkarinen, Anssi; Lahdensivu, Jukka; Mattila, Jussi; Pentti, Matti.

In: Materials and Structures, Vol. 50, No. 23, 02.2017.

Research output: Contribution to journalArticleScientificpeer-review

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@article{d332b73ffc6a4a0c86e863cc45f0b055,
title = "The corrosion rate in reinforced concrete facades exposed to outdoor environment",
abstract = "Outdoor concrete structures such as concrete facade panels and balcony frame panels are subjected to various environmental actions causing reinforcement corrosion problems. Long-term field measurement data on reinforcement corrosion in carbonated concrete on these structures was utilized in the creation of a corrosion rate regression model combining weather parameters such as temperature, relative humidity, wind-driven rain and solar radiation to corrosion rate. A versatile model capable of predicting the effect of varying environmental actions on the corrosion rates of carbonation induced corrosion was produced. Wind-driven rain was found to have the greatest impact on corrosion rate in tandem with the micro climate surrounding the building. Due to changes in air temperature, air relative humidity as well as in the amount of wind-driven rain and solar radiation, the corrosion rate on concrete facades and balconies is constantly changing. Despite the high seasonal and yearly variation, the average level of the modelled corrosion rate was quite steady on a longer 30-year perspective. This information is substantial for the long term service life design of concrete structures.",
keywords = "Carbonation, Concrete, Corrosion, Field measurement, Modelling, Reinforcement, Service life design",
author = "Arto K{\"o}li{\"o} and Pakkala, {Toni A.} and Harri Hohti and Anssi Laukkarinen and Jukka Lahdensivu and Jussi Mattila and Matti Pentti",
year = "2017",
month = "2",
doi = "10.1617/s11527-016-0920-7",
language = "English",
volume = "50",
journal = "Materials and Structures",
issn = "1359-5997",
publisher = "Springer Verlag",
number = "23",

}

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TY - JOUR

T1 - The corrosion rate in reinforced concrete facades exposed to outdoor environment

AU - Köliö, Arto

AU - Pakkala, Toni A.

AU - Hohti, Harri

AU - Laukkarinen, Anssi

AU - Lahdensivu, Jukka

AU - Mattila, Jussi

AU - Pentti, Matti

PY - 2017/2

Y1 - 2017/2

N2 - Outdoor concrete structures such as concrete facade panels and balcony frame panels are subjected to various environmental actions causing reinforcement corrosion problems. Long-term field measurement data on reinforcement corrosion in carbonated concrete on these structures was utilized in the creation of a corrosion rate regression model combining weather parameters such as temperature, relative humidity, wind-driven rain and solar radiation to corrosion rate. A versatile model capable of predicting the effect of varying environmental actions on the corrosion rates of carbonation induced corrosion was produced. Wind-driven rain was found to have the greatest impact on corrosion rate in tandem with the micro climate surrounding the building. Due to changes in air temperature, air relative humidity as well as in the amount of wind-driven rain and solar radiation, the corrosion rate on concrete facades and balconies is constantly changing. Despite the high seasonal and yearly variation, the average level of the modelled corrosion rate was quite steady on a longer 30-year perspective. This information is substantial for the long term service life design of concrete structures.

AB - Outdoor concrete structures such as concrete facade panels and balcony frame panels are subjected to various environmental actions causing reinforcement corrosion problems. Long-term field measurement data on reinforcement corrosion in carbonated concrete on these structures was utilized in the creation of a corrosion rate regression model combining weather parameters such as temperature, relative humidity, wind-driven rain and solar radiation to corrosion rate. A versatile model capable of predicting the effect of varying environmental actions on the corrosion rates of carbonation induced corrosion was produced. Wind-driven rain was found to have the greatest impact on corrosion rate in tandem with the micro climate surrounding the building. Due to changes in air temperature, air relative humidity as well as in the amount of wind-driven rain and solar radiation, the corrosion rate on concrete facades and balconies is constantly changing. Despite the high seasonal and yearly variation, the average level of the modelled corrosion rate was quite steady on a longer 30-year perspective. This information is substantial for the long term service life design of concrete structures.

KW - Carbonation

KW - Concrete

KW - Corrosion

KW - Field measurement

KW - Modelling

KW - Reinforcement

KW - Service life design

U2 - 10.1617/s11527-016-0920-7

DO - 10.1617/s11527-016-0920-7

M3 - Article

VL - 50

JO - Materials and Structures

JF - Materials and Structures

SN - 1359-5997

IS - 23

ER -