Influence of Frost Damage on Chloride Penetration into Concrete

Peng Zhang; Folker H. Wittmann; Yan Ru Wang; Tie Jun Zhao; Guan Ting

doi:10.4028/www.scientific.net/KEM.711.359

Paper Titles

Real Case: Assessing Sulfate Resistance of Coastal Protection Precast Elements
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Resistance of Concrete to Na₂SO₄ Freeze-Thaw Cycles and Failure Mechanism Analysis
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Effect of Rapid Hardening Cement and Setting Accelerator on the Freeze-Thaw Durability of Fly Ash Concrete
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Lattice Modelling of the Onset of Concrete-Ice Abrasion
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Influence of Frost Damage on Chloride Penetration into Concrete
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Chloride Distribution Feature in Surface Layer of Cement Paste under Cyclic Drying-Wetting Condition
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Chloride Proofing Performance and Rebar Corrosion Protection Performance of SHCC Having Bending Cracks
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Influence of Seawater in Strengths of Concrete Mix Design when Used in Mixing and Curing
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Lessons Learned from the Treat Island Marine Exposure Site
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 711Influence of Frost Damage on Chloride Penetration...

Influence of Frost Damage on Chloride Penetration into Concrete

Abstract:

In most national and international codes for durability design, service life is estimated after selection of one single and dominant deteriorating process such as carbonation, chloride penetration or frost attack. Application of existing codes has shown, however, that the predicted service life is not reached in practice in most cases. Early damage occurs and as a consequence expensive repair measures become frequently necessary, long before the design service life is reached. One reason for this discrepancy is certainly the fact that in practice each dominant deteriorating process is usually accompanied by other aggravating processes. In this contribution capillary absorption of different types of concrete is studied first. The influence of an increasing number of freeze-thaw cycles on capillary absorption of water is studied first, then chloride penetration before and after exposure to a certain number of freeze-thaw cycles was determined experimentally. It was found that an increasing number of freeze-thaw cycles increases chloride penetration significantly, and hence reduces service life in aggressive environment. It can be concluded that for realistic service life prediction the interaction between frost damage and chloride penetration has to be taken into consideration in regions with low temperatures.

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Periodical:

Key Engineering Materials (Volume 711)

Pages:

359-366

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.711.359

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Online since:

September 2016

Authors:

Peng Zhang, Folker H. Wittmann*, Yan Ru Wang, Tie Jun Zhao, Guan Ting

Keywords:

Chloride Penetration, Durability, Freeze-Thaw Cycle, Frost Damage, Service Life

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References

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