A study on anticorrosion effect in high-performance concrete by the pozzolanic reaction of slag

The study examines the pozzolanic reaction brought by the addition of slag to the cement paste using the synchrotron radiation accelerator (SRA), the mercury intrusion porosimetry (MIP), and scanning electron microstructural analysis. The anticorrosion effect in high-performance concrete with and wi...

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Bibliographic Details
Published in:Cement and concrete research 2004-04, Vol.34 (4), p.615-622
Main Authors: Hou, Wei-Ming, Chang, Ping-Kun, Hwang, Chao-Lung
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
CALCIUM HYDROXIDES
CEMENTS
CONCRETES
Concretes. Mortars. Grouts
Corrosion
CORROSION PROTECTION
Durability. Pathology. Repairing. Maintenance
ELECTRIC CONDUCTIVITY
Electrical permeability
Electrical resistivity
ELECTRON SCANNING
Exact sciences and technology
High-performance concrete
Materials
MATERIALS SCIENCE
MERCURY
Other special applications (sand concrete, roller compacted concrete, heavy concrete, architectural concrete, etc.)
PERMEABILITY
Pozzolanic reaction
SLAGS
SYNCHROTRON RADIATION
Synchrotron radiation accelerator
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Summary:The study examines the pozzolanic reaction brought by the addition of slag to the cement paste using the synchrotron radiation accelerator (SRA), the mercury intrusion porosimetry (MIP), and scanning electron microstructural analysis. The anticorrosion effect in high-performance concrete with and without slag added is also assessed by its electrical resistivity and permeability. Results show that pozzolanic reaction due to the addition of slag can decrease the amount of calcium hydroxide, reduce the volume of capillary pores (Pc), and lower its permeability, thus making the concrete more compact and durable. As evidenced by the enhanced electrical resistivity and reduced permeability, the addition of slag to high-performance concrete can indeed strength the anticorrosion effect.
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2003.10.007