Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Introducing a novel optimised binder activator with Redcar mudstone feedstock in the UK for geopolymer cement formation
This paper evaluates Redcar Mudstone (RM), a type of shale rock, as a potential geopolymeric binder for cement production, highlighting its preparation through milling and calcination, followed by blending with an alkali activator. The study utilises an L8 orthogonal array matrix to determine the optimal mix design based on maximum compressive strength. Mechanical tests reveal that sodium-activated RM serves as a viable feedstock, producing cement comparable to or better than other mineral-based feedstocks, achieving a maximum mean compressive strength of 71.98 MPa. The mix optimisation process indicates the RM to alkali ratio and the sodium silicate to sodium hydroxide ratio as critical factors in developing this geopolymer cement. Results show a significant presence of aluminosilicates in their oxidised state, essential for the geopolymerisation process, aligning with all mineralogical analyses. The competitive results of this cement experimentation with Ordinary Portland Cement (OPC) and other geopolymers underscore its potential. This research underscores the environmental and strength performance advantages of RM derived geopolymers, suggesting their potential as an effective waste valorisation method and a green alternative in cement production, driven by the global push to reduce CO2 emissions and the extensive research on geopolymers and innovative binders.
Introducing a novel optimised binder activator with Redcar mudstone feedstock in the UK for geopolymer cement formation
This paper evaluates Redcar Mudstone (RM), a type of shale rock, as a potential geopolymeric binder for cement production, highlighting its preparation through milling and calcination, followed by blending with an alkali activator. The study utilises an L8 orthogonal array matrix to determine the optimal mix design based on maximum compressive strength. Mechanical tests reveal that sodium-activated RM serves as a viable feedstock, producing cement comparable to or better than other mineral-based feedstocks, achieving a maximum mean compressive strength of 71.98 MPa. The mix optimisation process indicates the RM to alkali ratio and the sodium silicate to sodium hydroxide ratio as critical factors in developing this geopolymer cement. Results show a significant presence of aluminosilicates in their oxidised state, essential for the geopolymerisation process, aligning with all mineralogical analyses. The competitive results of this cement experimentation with Ordinary Portland Cement (OPC) and other geopolymers underscore its potential. This research underscores the environmental and strength performance advantages of RM derived geopolymers, suggesting their potential as an effective waste valorisation method and a green alternative in cement production, driven by the global push to reduce CO2 emissions and the extensive research on geopolymers and innovative binders.
Introducing a novel optimised binder activator with Redcar mudstone feedstock in the UK for geopolymer cement formation
Champan, Jack (Autor:in) / Thompson, Reece (Autor:in) / Hughes, David (Autor:in) / Abdalqadir, Mardin (Autor:in) / Rezaei Gomari, Sina (Autor:in)
29.06.2024
Champan , J , Thompson , R , Hughes , D , Abdalqadir , M & Rezaei Gomari , S 2024 , ' Introducing a novel optimised binder activator with Redcar mudstone feedstock in the UK for geopolymer cement formation ' , Colloids and Surfaces A: Physicochemical and Engineering Aspects , vol. 699 , 134650 . https://doi.org/10.1016/j.colsurfa.2024.134650
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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