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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quantification of critical chloride threshold of reinforcing steel embedded in portland limestone cement systems containing supplementary cementitious materials
https://orcid.org/http://orcid.org/0000-0002-3310-2535
https://orcid.org/http://orcid.org/0000-0001-8647-8096
Use of portland limestone cement (PLC) in combination with supplementary cementitious materials (SCMs) can significantly reduce the carbon footprint of concrete mixtures. The sustainability offered by these materials can be nullified if there is a lack of resiliency. Therefore, in this study the critical chloride threshold, Clcrit, of PLC and ordinary portland cement (OPC) systems, in combination with supplementary cementitious materials (SCMs) are investigated. A new test method, the OCcrit test, and a modified ASTM G109 test method were used to assess the Clcrit of the reinforcing bars embedded in these cementitious systems. Results indicate that PLC systems, containing up to 15% interground limestone, exhibit similar Clcrit values compared to the OPC systems. Also, the Clcrit values determined from the modified ASTM G109 method are higher than the values determined from the OCcrit method. The addition of SCMs, apart from reducing the carbon footprint, does not significantly affect the Clcrit of PLC systems.
Quantification of critical chloride threshold of reinforcing steel embedded in portland limestone cement systems containing supplementary cementitious materials
https://orcid.org/http://orcid.org/0000-0002-3310-2535
https://orcid.org/http://orcid.org/0000-0001-8647-8096
Use of portland limestone cement (PLC) in combination with supplementary cementitious materials (SCMs) can significantly reduce the carbon footprint of concrete mixtures. The sustainability offered by these materials can be nullified if there is a lack of resiliency. Therefore, in this study the critical chloride threshold, Clcrit, of PLC and ordinary portland cement (OPC) systems, in combination with supplementary cementitious materials (SCMs) are investigated. A new test method, the OCcrit test, and a modified ASTM G109 test method were used to assess the Clcrit of the reinforcing bars embedded in these cementitious systems. Results indicate that PLC systems, containing up to 15% interground limestone, exhibit similar Clcrit values compared to the OPC systems. Also, the Clcrit values determined from the modified ASTM G109 method are higher than the values determined from the OCcrit method. The addition of SCMs, apart from reducing the carbon footprint, does not significantly affect the Clcrit of PLC systems.
Quantification of critical chloride threshold of reinforcing steel embedded in portland limestone cement systems containing supplementary cementitious materials
https://orcid.org/http://orcid.org/0000-0002-3310-2535
https://orcid.org/http://orcid.org/0000-0001-8647-8096
Use of portland limestone cement (PLC) in combination with supplementary cementitious materials (SCMs) can significantly reduce the carbon footprint of concrete mixtures. The sustainability offered by these materials can be nullified if there is a lack of resiliency. Therefore, in this study the critical chloride threshold, Clcrit, of PLC and ordinary portland cement (OPC) systems, in combination with supplementary cementitious materials (SCMs) are investigated. A new test method, the OCcrit test, and a modified ASTM G109 test method were used to assess the Clcrit of the reinforcing bars embedded in these cementitious systems. Results indicate that PLC systems, containing up to 15% interground limestone, exhibit similar Clcrit values compared to the OPC systems. Also, the Clcrit values determined from the modified ASTM G109 method are higher than the values determined from the OCcrit method. The addition of SCMs, apart from reducing the carbon footprint, does not significantly affect the Clcrit of PLC systems.
Quantification of critical chloride threshold of reinforcing steel embedded in portland limestone cement systems containing supplementary cementitious materials
Mater Struct
Vasudevan, Gokul Dev (Autor:in) / Trejo, David (Autor:in)
01.05.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Portland limestone cement , Low carbon binders , Critical chloride threshold , Service life , Cement and concrete decarbonization , Carbon neutrality Engineering , Solid Mechanics , Materials Science, general , Theoretical and Applied Mechanics , Manufacturing, Machines, Tools, Processes , Civil Engineering , Building Materials
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