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Chloride ingress for concrete containing blast-furnace slag, related to microstructural parameters

Elke Gruyaert, Philip Van den Heede UGent and Nele De Belie UGent (2009) RILEM PROCEEDINGS. PRO 66. p.440-448
abstract
Chlorides which penetrate into reinforced concrete can deteriorate structures by corrosion. These chlorides can originate from seawater, de-icing salts or other chloride solutions. In this study, ordinary Portland Cement (OPC) concrete and concrete in which 50 %, 70 % and 85 % of the cement is replaced by BFS are compared at an age of 1, 3, 6 and 12 months with regard to chloride penetration. Therefore, non-steady state migration tests (CTH) were performed and the chloride penetration depth was determined by silver nitrate solution. In addition, rapid chloride tests (RCT) were used to give an indication of the total and free chloride content at different depths. The results indicate that concrete containing BFS is more resistant to chloride penetration in comparison to OPC concrete. To explain the different behaviour of concrete containing BFS in comparison to OPC concrete, the porosity of these mixtures was investigated. To determine the pore structure, vacuum absoption tests and capillary water sorption tests were performed. With increasing BFS content, the total porosity increases slightly, whereas the capillary porosity decreases, indicating a finer pore structure for BFS concrete. However, the capillary sorption in the zone surrounding a moulding surface is higher for concrete containing BFS, while the interior zone gives comparable results for OPC and BFS concrete.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
RILEM PROCEEDINGS
RILEM Proc.
editor
Konstantin Kovler
volume
PRO 66
issue title
Concrete Durability and Service Life Planning : ConcreteLife '09
pages
440 - 448
publisher
RILEM Publications
place of publication
Bagneux, France
conference name
2nd International RILEM workshop on Concrete Durability and Service Life Planning (ConcreteLife '09)
conference location
Haifa, Israel
conference start
2009-09-07
conference end
2009-09-09
ISBN
9782351580745
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1000116
handle
http://hdl.handle.net/1854/LU-1000116
date created
2010-07-01 11:46:26
date last changed
2017-01-02 09:52:38
@inproceedings{1000116,
  abstract     = {Chlorides which penetrate into reinforced concrete can deteriorate structures by corrosion. These chlorides can originate from seawater, de-icing salts or other chloride solutions. In this study, ordinary Portland Cement (OPC) concrete and concrete in which 50 \%, 70 \% and 85 \% of the cement is replaced by BFS are compared at an age of 1, 3, 6 and 12 months with regard to chloride penetration. Therefore, non-steady state migration tests (CTH) were performed and the chloride penetration depth was determined by silver nitrate solution. In addition, rapid chloride tests (RCT) were used to give an indication of the total and free chloride content at different depths. The results indicate that concrete containing BFS is more resistant to chloride penetration in comparison to OPC concrete.
To explain the different behaviour of concrete containing BFS in comparison to OPC concrete, the porosity of these mixtures was investigated. To determine the pore structure, vacuum absoption tests and capillary water sorption tests were performed. With increasing BFS content, the total porosity increases slightly, whereas the capillary porosity decreases, indicating a finer pore structure for BFS concrete. However, the capillary sorption in the zone surrounding a moulding surface is higher for concrete containing BFS, while the interior zone gives comparable results for OPC and BFS concrete.},
  author       = {Gruyaert, Elke and Van den Heede, Philip and De Belie, Nele},
  booktitle    = {RILEM PROCEEDINGS},
  editor       = {Kovler, Konstantin},
  isbn         = {9782351580745},
  language     = {eng},
  location     = {Haifa, Israel},
  pages        = {440--448},
  publisher    = {RILEM Publications},
  title        = {Chloride ingress for concrete containing blast-furnace slag, related to microstructural parameters},
  volume       = {PRO 66},
  year         = {2009},
}

Chicago
Gruyaert, Elke, Philip Van den Heede, and Nele De Belie. 2009. “Chloride Ingress for Concrete Containing Blast-furnace Slag, Related to Microstructural Parameters.” In Rilem Proceedings, ed. Konstantin Kovler, PRO 66:440–448. Bagneux, France: RILEM Publications.
APA
Gruyaert, E., Van den Heede, P., & De Belie, N. (2009). Chloride ingress for concrete containing blast-furnace slag, related to microstructural parameters. In Konstantin Kovler (Ed.), RILEM PROCEEDINGS (Vol. PRO 66, pp. 440–448). Presented at the 2nd International RILEM workshop on Concrete Durability and Service Life Planning (ConcreteLife  ’09), Bagneux, France: RILEM Publications.
Vancouver
1.
Gruyaert E, Van den Heede P, De Belie N. Chloride ingress for concrete containing blast-furnace slag, related to microstructural parameters. In: Kovler K, editor. RILEM PROCEEDINGS. Bagneux, France: RILEM Publications; 2009. p. 440–8.
MLA
Gruyaert, Elke, Philip Van den Heede, and Nele De Belie. “Chloride Ingress for Concrete Containing Blast-furnace Slag, Related to Microstructural Parameters.” Rilem Proceedings. Ed. Konstantin Kovler. PRO 66. Bagneux, France: RILEM Publications, 2009. 440–448. Print.