Chloride Ingress into Concrete under Water Pressure

Mia Schou Lund; Lotte Braad Sander; Bent Grelk; Kurt Kielsgaard Hansen

Chloride Ingress into Concrete under Water Pressure

Mia Schou Lund
, Lotte Braad Sander
, Bent Grelk
, Kurt Kielsgaard Hansen

Technical University of Denmark

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

The chloride ingress into concrete under water pressures of 100 kPa and 800 kPa have been investigated by experiments. The specimens were exposed to a 10% NaCl solution and water mixture. For the concrete having w/c = 0.35 the experimental results show the chloride diffusion coefficient at 800 kPa (～8 atm.) is 12 times greater than at 100 kPa (～1 atm.). For w/c = 0.45 and w/c = 0.55 the chloride diffusion coefficients are 7 and 3 times greater. This means that a change in pressure highly influences the chloride ingress into the concrete and thereby the life length models for concrete structures.

Original language	English
Title of host publication	Nordic Concrete Research : Proceedings of XXI Nordic Concrete Research Symposium, Hämeenlinna, Finland 2011
Place of Publication	Oslo
Publisher	Norsk Betongforening
Publication date	2011
Pages	207-210
Publication status	Published - 2011
Event	21st Nordic Concrete Research Symposium - Hämeenlinna, Finland Duration: 30 May 2011 → 1 Jun 2011 Conference number: 21

Conference

Conference	21st Nordic Concrete Research Symposium
Number	21
Country/Territory	Finland
City	Hämeenlinna
Period	30/05/2011 → 01/06/2011

Bibliographical note

Edited by The Nordic Concrete Federation.

Keywords

Water pressure
w/c-ratios
Chloride diffusion coefficient
Concrete

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Chloride Ingress into Concrete under Water Pressure

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@inproceedings{9f6d92d87ce24a10b06e7e394348eec6,

title = "Chloride Ingress into Concrete under Water Pressure",

abstract = "The chloride ingress into concrete under water pressures of 100 kPa and 800 kPa have been investigated by experiments. The specimens were exposed to a 10\% NaCl solution and water mixture. For the concrete having w/c = 0.35 the experimental results show the chloride diffusion coefficient at 800 kPa (～8 atm.) is 12 times greater than at 100 kPa (～1 atm.). For w/c = 0.45 and w/c = 0.55 the chloride diffusion coefficients are 7 and 3 times greater. This means that a change in pressure highly influences the chloride ingress into the concrete and thereby the life length models for concrete structures.",

keywords = "Water pressure, w/c-ratios, Chloride diffusion coefficient, Concrete",

author = "Lund, \{Mia Schou\} and Sander, \{Lotte Braad\} and Bent Grelk and Hansen, \{Kurt Kielsgaard\}",

note = "Edited by The Nordic Concrete Federation.; 21st Nordic Concrete Research Symposium ; Conference date: 30-05-2011 Through 01-06-2011",

year = "2011",

language = "English",

pages = "207--210",

booktitle = "Nordic Concrete Research",

publisher = "Norsk Betongforening",

}

Chloride Ingress into Concrete under Water Pressure. / Lund, Mia Schou; Sander, Lotte Braad; Grelk, Bent et al.
Nordic Concrete Research: Proceedings of XXI Nordic Concrete Research Symposium, Hämeenlinna, Finland 2011. Oslo: Norsk Betongforening, 2011. p. 207-210.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Chloride Ingress into Concrete under Water Pressure

AU - Lund, Mia Schou

AU - Sander, Lotte Braad

AU - Grelk, Bent

AU - Hansen, Kurt Kielsgaard

N1 - Conference code: 21

PY - 2011

Y1 - 2011

N2 - The chloride ingress into concrete under water pressures of 100 kPa and 800 kPa have been investigated by experiments. The specimens were exposed to a 10% NaCl solution and water mixture. For the concrete having w/c = 0.35 the experimental results show the chloride diffusion coefficient at 800 kPa (～8 atm.) is 12 times greater than at 100 kPa (～1 atm.). For w/c = 0.45 and w/c = 0.55 the chloride diffusion coefficients are 7 and 3 times greater. This means that a change in pressure highly influences the chloride ingress into the concrete and thereby the life length models for concrete structures.

AB - The chloride ingress into concrete under water pressures of 100 kPa and 800 kPa have been investigated by experiments. The specimens were exposed to a 10% NaCl solution and water mixture. For the concrete having w/c = 0.35 the experimental results show the chloride diffusion coefficient at 800 kPa (～8 atm.) is 12 times greater than at 100 kPa (～1 atm.). For w/c = 0.45 and w/c = 0.55 the chloride diffusion coefficients are 7 and 3 times greater. This means that a change in pressure highly influences the chloride ingress into the concrete and thereby the life length models for concrete structures.

KW - Water pressure

KW - w/c-ratios

KW - Chloride diffusion coefficient

KW - Concrete

M3 - Article in proceedings

SP - 207

EP - 210

BT - Nordic Concrete Research

PB - Norsk Betongforening

CY - Oslo

T2 - 21st Nordic Concrete Research Symposium

Y2 - 30 May 2011 through 1 June 2011

ER -

Chloride Ingress into Concrete under Water Pressure

Abstract

Conference

Bibliographical note

Keywords

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