In order to control different corrosion mechanisms, concrete with high quality and low permeability is essential. In conclusion, although conventional concrete is not fully impermeable, paying proper attention to various different aspects of construction, such as manufacturing, mixing, and curing can ensure excellent quality concrete with low permeability.
To protect against reinforcement corrosion, designers and site engineers need to take these practical measures.
Prevention Methods of Reinforcement Corrosion in Construction Site
Cement Content
It is suggested that a minimum cement content of 356 kg per meter cube could be used for environments that are corrosive.
When cement content is improved, carbon-di-oxide and chlorine have a higher binding capacity. As a result, the water cement ratio, curing, and compaction quality will have a greater effect on chloride and carbonation penetration than cement content if cement is raised without analysis.
Water Cement Ratio
It is possible to produce low permeability concrete by using a low water-cement ratio, which, in turn, can provide better reinforcement protection. An external source of chlorides from deicing chemicals, salt, brackish water, seawater, or spray from these sources, or moisture, is defined as structural concrete with a maximum water-cement ratio of .40 and a minimum concrete strength of 35 MPa.
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