Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Use of Corncob Granules as Sand Replacement in the Production of Cement Mortars
https://orcid.org/http://orcid.org/0000-0003-3128-3114
https://orcid.org/http://orcid.org/0000-0001-9648-3999
https://orcid.org/http://orcid.org/0000-0001-7455-7002
https://orcid.org/http://orcid.org/0000-0002-0148-6466
Low-cost housing is urgently needed in low- and middle-income countries. Concrete is often too costly and raw material production, including aggregate extraction, is known to be harmful to the environment. In this paper the use of an agricultural waste, corncob, as a potential lightweight replacement of sand in cement materials has been studied. Corncob granules were added to the mix in percentages of 5%, 10%, 15% and 20% by volume. The corncob granules were used in their natural state as well as following coating with either cement slurry or gum Arabic. The effect of sand replacement was determined through flexural and compressive testing of materials, while the chemical composition was evaluated using Thermogravimetric Analysis (TGA) and X-Ray Diffraction (XRD). The porosity of the mixes was also determined using a mercury inclusion porosimeter (MIP). The results showed that while the early age strength (7 days) was extremely low, the late age’s strengths improved drastically between 10% up to 3500% in 28 days.
Use of Corncob Granules as Sand Replacement in the Production of Cement Mortars
https://orcid.org/http://orcid.org/0000-0003-3128-3114
https://orcid.org/http://orcid.org/0000-0001-9648-3999
https://orcid.org/http://orcid.org/0000-0001-7455-7002
https://orcid.org/http://orcid.org/0000-0002-0148-6466
Low-cost housing is urgently needed in low- and middle-income countries. Concrete is often too costly and raw material production, including aggregate extraction, is known to be harmful to the environment. In this paper the use of an agricultural waste, corncob, as a potential lightweight replacement of sand in cement materials has been studied. Corncob granules were added to the mix in percentages of 5%, 10%, 15% and 20% by volume. The corncob granules were used in their natural state as well as following coating with either cement slurry or gum Arabic. The effect of sand replacement was determined through flexural and compressive testing of materials, while the chemical composition was evaluated using Thermogravimetric Analysis (TGA) and X-Ray Diffraction (XRD). The porosity of the mixes was also determined using a mercury inclusion porosimeter (MIP). The results showed that while the early age strength (7 days) was extremely low, the late age’s strengths improved drastically between 10% up to 3500% in 28 days.
Use of Corncob Granules as Sand Replacement in the Production of Cement Mortars
https://orcid.org/http://orcid.org/0000-0003-3128-3114
https://orcid.org/http://orcid.org/0000-0001-9648-3999
https://orcid.org/http://orcid.org/0000-0001-7455-7002
https://orcid.org/http://orcid.org/0000-0002-0148-6466
Low-cost housing is urgently needed in low- and middle-income countries. Concrete is often too costly and raw material production, including aggregate extraction, is known to be harmful to the environment. In this paper the use of an agricultural waste, corncob, as a potential lightweight replacement of sand in cement materials has been studied. Corncob granules were added to the mix in percentages of 5%, 10%, 15% and 20% by volume. The corncob granules were used in their natural state as well as following coating with either cement slurry or gum Arabic. The effect of sand replacement was determined through flexural and compressive testing of materials, while the chemical composition was evaluated using Thermogravimetric Analysis (TGA) and X-Ray Diffraction (XRD). The porosity of the mixes was also determined using a mercury inclusion porosimeter (MIP). The results showed that while the early age strength (7 days) was extremely low, the late age’s strengths improved drastically between 10% up to 3500% in 28 days.
Use of Corncob Granules as Sand Replacement in the Production of Cement Mortars
RILEM Bookseries
Escalante-Garcia, J. Ivan (Herausgeber:in) / Castro Borges, Pedro (Herausgeber:in) / Duran-Herrera, Alejandro (Herausgeber:in) / Abdel-Magid, Taghried (Autor:in) / Walker, Pete (Autor:in) / Paine, Kevin (Autor:in) / Allen, Stephen (Autor:in)
RILEM Annual Week ; 2021 ; Merida, Mexico
Proceedings of the 75th RILEM Annual Week 2021 ; Kapitel: 103 ; 973-982
RILEM Bookseries ; 40
11.03.2023
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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