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Corrosion resistance of BS 8500 compliant concretes
conference contribution
posted on 2015-11-18, 14:48 authored by D. Dunne, Christian Christodoulou, Chris GoodierChris Goodier, R. YeaCorrosion of steel reinforcement in concrete, due to the ingress of chloride ions, is the most
significant form of concrete deterioration. Fresh concrete however, provides a highly alkaline environment
which facilitates a protective passive oxide layer around the steel reinforcement. Modern engineering standards
provide guidance to designers on the specification of concrete mixes to meet a prescribed design life.
More than one cement blend may however be available to meet the specific design life for a particular exposure
classification, which can occasionally lead to confusion. This work investigated the corrosion resistance
of BS 8500 compliant cement combinations for a XS3 environmental exposure in order to identify relative
durability performance differences. The concretes investigated contained Portland cement (PC), Fly Ash (FA)
and Ground Granulated Blastfurnace Slag (GGBS). FA and GGBS were blended in binary combinations with
the PC, at levels of 28% and 51% respectively. Two water/cement (w/c) ratios of 0.35 and 0.40 were investigated,
together with total cementitious contents of 380kg/m3, representing typical structural reinforced concrete.
Specimens were cyclically exposed to a saline solution and tested for compressive strength, electrochemical
potential, resistivity, and chloride ion content with depth.
History
School
- Architecture, Building and Civil Engineering
Published in
4th Int. Conf. on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR)Volume
1Issue
1Citation
DUNNE, D. ... et al, 2015. Corrosion resistance of BS 8500 compliant concretes. IN: Dehn, F. et al (eds). Concrete Repair, Rehabilitation and Retrofitting IV: Proceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR-4), 5th-7th October 2015, Leipzig, Germany. CRC Press, pp. 131-138.Publisher
CRC Press (© Taylor and Francis Group, London).Version
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2015Notes
This conference paper is closed access.ISBN
1315677644;9781315677644Language
- en