A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Towards Sustainable Concrete Rehabilitation: Correlating Resistivity Measurement Methods in Commercial Repair Mortars
Today, a vast number of existing concrete structures are reaching or have reached the end of their expected service life. With 50–80% of the concrete deterioration contributed to reinforcement corrosion, the demand for repair mortars is high. Compounded by a two-to-three-times higher cement factor, a pressing need emerges for developing sustainable and durable repair mortars. Sustainability can be considered by incorporating the environmental and economic impact over the product life cycle, and durability can be incorporated by technical performance. The focus of this study lies on electrical resistivity in which four hydraulic bonded and commercially available repair mortars were selected and exposed to three environmental conditions. Recognising the pivotal role of resistivity in applying cathodic protection (CP), EN12696 emphasises that the repair mortar’s resistivity has to be 0.5-to-2-times that of the parent concrete to have a uniform power distribution. To select compatible products, this paper aims to elucidate the correlation between distinct resistivity measurement methods (e.g. Wenner probe, TEM-external plates and TEM-embedded pins) while sample dimensions, sample origin, saturation degree and exposure conditions varied. Understanding this critical property is vital in the CP performance for service life extension of reinforced concrete structures. By integrating technical performance and environmental considerations, this research contributes to the ongoing development of sustainable and durable repair mortars.
Towards Sustainable Concrete Rehabilitation: Correlating Resistivity Measurement Methods in Commercial Repair Mortars
Today, a vast number of existing concrete structures are reaching or have reached the end of their expected service life. With 50–80% of the concrete deterioration contributed to reinforcement corrosion, the demand for repair mortars is high. Compounded by a two-to-three-times higher cement factor, a pressing need emerges for developing sustainable and durable repair mortars. Sustainability can be considered by incorporating the environmental and economic impact over the product life cycle, and durability can be incorporated by technical performance. The focus of this study lies on electrical resistivity in which four hydraulic bonded and commercially available repair mortars were selected and exposed to three environmental conditions. Recognising the pivotal role of resistivity in applying cathodic protection (CP), EN12696 emphasises that the repair mortar’s resistivity has to be 0.5-to-2-times that of the parent concrete to have a uniform power distribution. To select compatible products, this paper aims to elucidate the correlation between distinct resistivity measurement methods (e.g. Wenner probe, TEM-external plates and TEM-embedded pins) while sample dimensions, sample origin, saturation degree and exposure conditions varied. Understanding this critical property is vital in the CP performance for service life extension of reinforced concrete structures. By integrating technical performance and environmental considerations, this research contributes to the ongoing development of sustainable and durable repair mortars.
Towards Sustainable Concrete Rehabilitation: Correlating Resistivity Measurement Methods in Commercial Repair Mortars
RILEM Bookseries
Beushausen, Hans (editor) / Ndawula, Joanitta (editor) / Alexander, Mark (editor) / Dehn, Frank (editor) / Moyo, Pilate (editor) / Bielen, Hanne (author) / Demet, Louis (author) / Debaene, Robin (author) / Audenaert, Amaryllis (author) / Craeye, Bart (author)
International Conference on Concrete Repair, Rehabilitation and Retrofitting ; 2024 ; Cape Town, South Africa
2024-11-01
10 pages
Article/Chapter (Book)
Electronic Resource
English
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