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Alkali-silica reaction in finnish swimming pools

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Alkali-silica reaction in finnish swimming pools. / Lahdensivu, Jukka; Kekäläinen, Pirkko.

Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures. ed. / Wit Derkowski; Piotr Krajewski; Piotr Gwozdziewicz; Marek Pantak; Lukasz Hojdys. International Federation for Structural Concrete, 2019. p. 2006-2013 (fib Symposium Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Harvard

Lahdensivu, J & Kekäläinen, P 2019, Alkali-silica reaction in finnish swimming pools. in W Derkowski, P Krajewski, P Gwozdziewicz, M Pantak & L Hojdys (eds), Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures. fib Symposium Proceedings, International Federation for Structural Concrete, pp. 2006-2013, fib Symposium, 1/01/00.

APA

Lahdensivu, J., & Kekäläinen, P. (2019). Alkali-silica reaction in finnish swimming pools. In W. Derkowski, P. Krajewski, P. Gwozdziewicz, M. Pantak, & L. Hojdys (Eds.), Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures (pp. 2006-2013). (fib Symposium Proceedings). International Federation for Structural Concrete.

Vancouver

Lahdensivu J, Kekäläinen P. Alkali-silica reaction in finnish swimming pools. In Derkowski W, Krajewski P, Gwozdziewicz P, Pantak M, Hojdys L, editors, Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures. International Federation for Structural Concrete. 2019. p. 2006-2013. (fib Symposium Proceedings).

Author

Lahdensivu, Jukka ; Kekäläinen, Pirkko. / Alkali-silica reaction in finnish swimming pools. Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures. editor / Wit Derkowski ; Piotr Krajewski ; Piotr Gwozdziewicz ; Marek Pantak ; Lukasz Hojdys. International Federation for Structural Concrete, 2019. pp. 2006-2013 (fib Symposium Proceedings).

Bibtex - Download

@inproceedings{40b3f2d1cc6f41efb02af1884de8e74a,
title = "Alkali-silica reaction in finnish swimming pools",
abstract = "Finland has traditionally been considered an alkali-silica reaction (ASR) free country. This was thought to be due to the exceptional quality of the mostly coarse crystalline igneous rocks. However, during the last few years dozens of cases of ASR have been reported. The scope of this study was to survey the occurrence and the propagation time of ASR in recent investigations of swimming pool structures. The research data consists of 9 condition investigation reports, and the reports of 144 thin section analyses, 188 tensile strength analyses and 29 compressive strength analyses made during 2005-2018. According to the research data, the occurrence of ASR is spread all over Finland. The reacting aggregates consist of rock types which are considered relatively stable or low reacting in literature. This may explain the relatively late emergence, usually around 40 years, of ASR. However, the swimming pool environment, with relatively high temperatures and humidity, is more favourable for ASR than the average Finnish outdoor climate. In most cases ASR has been incipient. Only few of the tensile strength tests made have indicated local weathering in the leaking concrete pool. ASR can be reliably detected in a petrographic thin section analysis, but evaluating the degree of ASR -caused damage also requires tensile strength testing. Observations of silica gel, or reacting aggregate, do not necessarily indicate serious damage or direct correlation with the degree of cracking. Therefore, parallel test methods, i.e. thin section analyses and tensile strength tests, are needed to diagnose the ASR in a concrete structure and the possibility of repair.",
keywords = "Alkali-silica reaction, Concrete, Concrete petrography, Initiation time, Swimming pool",
author = "Jukka Lahdensivu and Pirkko Kek{\"a}l{\"a}inen",
note = "EXT={"}Lahdensivu, Jukka{"}",
year = "2019",
language = "English",
series = "fib Symposium Proceedings",
publisher = "International Federation for Structural Concrete",
pages = "2006--2013",
editor = "Wit Derkowski and Piotr Krajewski and Piotr Gwozdziewicz and Marek Pantak and Lukasz Hojdys",
booktitle = "Proceedings of the fib Symposium 2019",

}

RIS (suitable for import to EndNote) - Download

TY - GEN

T1 - Alkali-silica reaction in finnish swimming pools

AU - Lahdensivu, Jukka

AU - Kekäläinen, Pirkko

N1 - EXT="Lahdensivu, Jukka"

PY - 2019

Y1 - 2019

N2 - Finland has traditionally been considered an alkali-silica reaction (ASR) free country. This was thought to be due to the exceptional quality of the mostly coarse crystalline igneous rocks. However, during the last few years dozens of cases of ASR have been reported. The scope of this study was to survey the occurrence and the propagation time of ASR in recent investigations of swimming pool structures. The research data consists of 9 condition investigation reports, and the reports of 144 thin section analyses, 188 tensile strength analyses and 29 compressive strength analyses made during 2005-2018. According to the research data, the occurrence of ASR is spread all over Finland. The reacting aggregates consist of rock types which are considered relatively stable or low reacting in literature. This may explain the relatively late emergence, usually around 40 years, of ASR. However, the swimming pool environment, with relatively high temperatures and humidity, is more favourable for ASR than the average Finnish outdoor climate. In most cases ASR has been incipient. Only few of the tensile strength tests made have indicated local weathering in the leaking concrete pool. ASR can be reliably detected in a petrographic thin section analysis, but evaluating the degree of ASR -caused damage also requires tensile strength testing. Observations of silica gel, or reacting aggregate, do not necessarily indicate serious damage or direct correlation with the degree of cracking. Therefore, parallel test methods, i.e. thin section analyses and tensile strength tests, are needed to diagnose the ASR in a concrete structure and the possibility of repair.

AB - Finland has traditionally been considered an alkali-silica reaction (ASR) free country. This was thought to be due to the exceptional quality of the mostly coarse crystalline igneous rocks. However, during the last few years dozens of cases of ASR have been reported. The scope of this study was to survey the occurrence and the propagation time of ASR in recent investigations of swimming pool structures. The research data consists of 9 condition investigation reports, and the reports of 144 thin section analyses, 188 tensile strength analyses and 29 compressive strength analyses made during 2005-2018. According to the research data, the occurrence of ASR is spread all over Finland. The reacting aggregates consist of rock types which are considered relatively stable or low reacting in literature. This may explain the relatively late emergence, usually around 40 years, of ASR. However, the swimming pool environment, with relatively high temperatures and humidity, is more favourable for ASR than the average Finnish outdoor climate. In most cases ASR has been incipient. Only few of the tensile strength tests made have indicated local weathering in the leaking concrete pool. ASR can be reliably detected in a petrographic thin section analysis, but evaluating the degree of ASR -caused damage also requires tensile strength testing. Observations of silica gel, or reacting aggregate, do not necessarily indicate serious damage or direct correlation with the degree of cracking. Therefore, parallel test methods, i.e. thin section analyses and tensile strength tests, are needed to diagnose the ASR in a concrete structure and the possibility of repair.

KW - Alkali-silica reaction

KW - Concrete

KW - Concrete petrography

KW - Initiation time

KW - Swimming pool

UR - http://www.scopus.com/inward/record.url?scp=85066082822&partnerID=8YFLogxK

M3 - Conference contribution

T3 - fib Symposium Proceedings

SP - 2006

EP - 2013

BT - Proceedings of the fib Symposium 2019

A2 - Derkowski, Wit

A2 - Krajewski, Piotr

A2 - Gwozdziewicz, Piotr

A2 - Pantak, Marek

A2 - Hojdys, Lukasz

PB - International Federation for Structural Concrete

ER -