Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Compressive strength sensitivity of cement mortar using rice husk-derived graphene with a high specific surface area
https://orcid.org/0000-0002-8923-7156
https://orcid.org/0000-0003-0332-6703
Highlights Graphene-like materials (GRH) with high SSA were synthesized from rice husks. GRH mortar, with a higher SSA, showed a better compressive strength. Large edges in GRH may provide a better bonding environment with cement molecules.
Abstract Herein, we demonstrate improvements to the compressive strength of cementitious mortar by incorporating rice husk-derived graphenes (GRHs). Several manufacturing trials were undertaken to synthesize optimized GRHs using different dosages of rice husk ash and potassium hydroxide as well as a range of activation temperatures. The incorporation of GRHs into mortar exhibits a generally enhanced reinforcing effect compared to graphene nanoplatelets (GNPs) and multi-walled carbon nanotubes (MWNTs) because of its high specific surface area. SEM/TEM image analyses confirm that GRH has a corrugated graphene structure and clean edges at the atomic scale. GRH showed extremely high BET surface area (2274m2/g) compared to those of multi-walled carbon nanotubes and GNPs (50–200m2/g).
Compressive strength sensitivity of cement mortar using rice husk-derived graphene with a high specific surface area
https://orcid.org/0000-0002-8923-7156
https://orcid.org/0000-0003-0332-6703
Highlights Graphene-like materials (GRH) with high SSA were synthesized from rice husks. GRH mortar, with a higher SSA, showed a better compressive strength. Large edges in GRH may provide a better bonding environment with cement molecules.
Abstract Herein, we demonstrate improvements to the compressive strength of cementitious mortar by incorporating rice husk-derived graphenes (GRHs). Several manufacturing trials were undertaken to synthesize optimized GRHs using different dosages of rice husk ash and potassium hydroxide as well as a range of activation temperatures. The incorporation of GRHs into mortar exhibits a generally enhanced reinforcing effect compared to graphene nanoplatelets (GNPs) and multi-walled carbon nanotubes (MWNTs) because of its high specific surface area. SEM/TEM image analyses confirm that GRH has a corrugated graphene structure and clean edges at the atomic scale. GRH showed extremely high BET surface area (2274m2/g) compared to those of multi-walled carbon nanotubes and GNPs (50–200m2/g).
Compressive strength sensitivity of cement mortar using rice husk-derived graphene with a high specific surface area
https://orcid.org/0000-0002-8923-7156
https://orcid.org/0000-0003-0332-6703
Highlights Graphene-like materials (GRH) with high SSA were synthesized from rice husks. GRH mortar, with a higher SSA, showed a better compressive strength. Large edges in GRH may provide a better bonding environment with cement molecules.
Abstract Herein, we demonstrate improvements to the compressive strength of cementitious mortar by incorporating rice husk-derived graphenes (GRHs). Several manufacturing trials were undertaken to synthesize optimized GRHs using different dosages of rice husk ash and potassium hydroxide as well as a range of activation temperatures. The incorporation of GRHs into mortar exhibits a generally enhanced reinforcing effect compared to graphene nanoplatelets (GNPs) and multi-walled carbon nanotubes (MWNTs) because of its high specific surface area. SEM/TEM image analyses confirm that GRH has a corrugated graphene structure and clean edges at the atomic scale. GRH showed extremely high BET surface area (2274m2/g) compared to those of multi-walled carbon nanotubes and GNPs (50–200m2/g).
Compressive strength sensitivity of cement mortar using rice husk-derived graphene with a high specific surface area
Rhee, Inkyu (Autor:in) / Kim, Yoong Ahm (Autor:in) / Shin, Gun-Ok (Autor:in) / Kim, Ji Hoon (Autor:in) / Muramatsu, Hiroyuki (Autor:in)
Construction and Building Materials ; 96 ; 189-197
05.08.2015
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Electrically conductive cement mortar: Incorporating rice husk-derived high-surface-area graphene
| British Library Online Contents | 2016
Electrically conductive cement mortar: Incorporating rice husk-derived high-surface-area graphene
| Online Contents | 2016
Electrically conductive cement mortar: Incorporating rice husk-derived high-surface-area graphene
| British Library Online Contents | 2016