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A test method to assess the frost resistance of concrete at the waterline of hydraulic structures

Rosenqvist, Martin LU ; Oxfall, Mikael LU ; Fridh, Katja LU and Hassanzadeh, Manouchehr LU (2015) In Materials and Structures 48(8). p.2403-2415
Abstract
Superficial damage, similar in appearance to salt scaling of concrete, has been observed at the waterline of hydraulic structures, such as hydro power structures, bridge columns, canals and harbours. Progressive damage to the concrete surface results in exposure of coarse aggregate. Deterioration rates of about 1 mm per year have been observed in some cases. A laboratory test method was developed in order to subject concrete specimens to exposure conditions similar to those prevailing at hydraulic structures in cold regions. Two concrete mixes were produced in order to study the effects of frost action on the deterioration of concrete at the waterline. The first mix was made of frost-resistant concrete with water to cement-ratio... (More)
Superficial damage, similar in appearance to salt scaling of concrete, has been observed at the waterline of hydraulic structures, such as hydro power structures, bridge columns, canals and harbours. Progressive damage to the concrete surface results in exposure of coarse aggregate. Deterioration rates of about 1 mm per year have been observed in some cases. A laboratory test method was developed in order to subject concrete specimens to exposure conditions similar to those prevailing at hydraulic structures in cold regions. Two concrete mixes were produced in order to study the effects of frost action on the deterioration of concrete at the waterline. The first mix was made of frost-resistant concrete with water to cement-ratio (w/c-ratio) 0.45, whereas the second mix was made of non-frost-resistant concrete with w/c-ratio 0.65. Regarding the specimens with w/c-ratio 0.65, scaling was observed at the waterline after 51 freeze-thaw cycles. The damage was caused by the effects of frost action, since the effects of leaching and erosion can be neglected in the test setup. No damage to the specimens with w/c-ratio 0.45 was observed. The laboratory test method proposed in this paper is considered appropriate for assessing the frost resistance of concrete at the waterline of hydraulic structures in cold regions. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Concrete, Frost damage, Scaling, Freeze-thaw cycles, Hydraulic, structures
in
Materials and Structures
volume
48
issue
8
pages
2403 - 2415
publisher
Springer
external identifiers
  • wos:000358336500005
  • scopus:84938998183
ISSN
1359-5997
DOI
10.1617/s11527-014-0327-2
language
English
LU publication?
yes
id
cb85f06c-7d7a-49e2-886d-d90afd5afcec (old id 7773698)
date added to LUP
2015-09-18 12:11:19
date last changed
2017-09-24 03:21:31
@article{cb85f06c-7d7a-49e2-886d-d90afd5afcec,
  abstract     = {Superficial damage, similar in appearance to salt scaling of concrete, has been observed at the waterline of hydraulic structures, such as hydro power structures, bridge columns, canals and harbours. Progressive damage to the concrete surface results in exposure of coarse aggregate. Deterioration rates of about 1 mm per year have been observed in some cases. A laboratory test method was developed in order to subject concrete specimens to exposure conditions similar to those prevailing at hydraulic structures in cold regions. Two concrete mixes were produced in order to study the effects of frost action on the deterioration of concrete at the waterline. The first mix was made of frost-resistant concrete with water to cement-ratio (w/c-ratio) 0.45, whereas the second mix was made of non-frost-resistant concrete with w/c-ratio 0.65. Regarding the specimens with w/c-ratio 0.65, scaling was observed at the waterline after 51 freeze-thaw cycles. The damage was caused by the effects of frost action, since the effects of leaching and erosion can be neglected in the test setup. No damage to the specimens with w/c-ratio 0.45 was observed. The laboratory test method proposed in this paper is considered appropriate for assessing the frost resistance of concrete at the waterline of hydraulic structures in cold regions.},
  author       = {Rosenqvist, Martin and Oxfall, Mikael and Fridh, Katja and Hassanzadeh, Manouchehr},
  issn         = {1359-5997},
  keyword      = {Concrete,Frost damage,Scaling,Freeze-thaw cycles,Hydraulic,structures},
  language     = {eng},
  number       = {8},
  pages        = {2403--2415},
  publisher    = {Springer},
  series       = {Materials and Structures},
  title        = {A test method to assess the frost resistance of concrete at the waterline of hydraulic structures},
  url          = {http://dx.doi.org/10.1617/s11527-014-0327-2},
  volume       = {48},
  year         = {2015},
}