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Article

Study of an Ecological Cement-Based Composite with a Sustainable Raw Material, Sunflower Stalk Ash

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Faculty of Civil Engineering and Building Services, “Gheorghe Asachi” Technical University of Iași, 700050 Iași, Romania
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Faculty of Material Science and Engineering, “Gheorghe Asachi” Technical University of Iași, 700050 Iași, Romania
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Faculty of Architecture “G.M. Cantacuzino”, “Gheorghe Asachi” Technical University of Iași, 700050 Iași, Romania
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Author to whom correspondence should be addressed.
Academic Editors: Ángel Rodríguez Saiz, Sara Gutiérrez González and Verónica Calderón Carpintero
Materials 2021, 14(23), 7177; https://doi.org/10.3390/ma14237177
Received: 26 October 2021 / Revised: 21 November 2021 / Accepted: 23 November 2021 / Published: 25 November 2021
(This article belongs to the Special Issue Recent Research in the Design of New Sustainable Building Materials)
The use of plant ash as a sustainable cementitious material in concrete composition is a widely researched subject in the construction domain. A plant studied so far more for its thermal insulation properties, sunflower, was analyzed in this study with regard to its ash effects on the concrete composition. The present research aimed to analyze the effects of a 2.5%, 5%, 7.5%, 10%, 15%, 20%, or 30% volume replacement of cement by sunflower stalk ash (SA), a sustainable cementitious material, on the concrete compressive strength at 28 days and three months, the flexural and splitting tensile strengths, the resistance to repeated freeze–thaw cycles, and the resistance to chemical attack of hydrochloric acid. The elementary chemical composition of the SA and the composites was included also. According to the experimental results, SA decreased the values of the compressive and tensile strength of the concrete, but it improved the concrete behavior under repeated freeze–thaw cycles and under the action of hydrochloric acid. A percent of 10% of SA led to a much more pronounced development of compressive strength over time than conventional concrete (26.6% versus 12%). View Full-Text
Keywords: agro-waste; eco-friendly material; sustainable building materials; ecological concrete agro-waste; eco-friendly material; sustainable building materials; ecological concrete
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MDPI and ACS Style

Șerbănoiu, A.A.; Grădinaru, C.M.; Cimpoeșu, N.; Filipeanu, D.; Șerbănoiu, B.V.; Cherecheș, N.C. Study of an Ecological Cement-Based Composite with a Sustainable Raw Material, Sunflower Stalk Ash. Materials 2021, 14, 7177. https://doi.org/10.3390/ma14237177

AMA Style

Șerbănoiu AA, Grădinaru CM, Cimpoeșu N, Filipeanu D, Șerbănoiu BV, Cherecheș NC. Study of an Ecological Cement-Based Composite with a Sustainable Raw Material, Sunflower Stalk Ash. Materials. 2021; 14(23):7177. https://doi.org/10.3390/ma14237177

Chicago/Turabian Style

Șerbănoiu, Adrian A., Cătălina M. Grădinaru, Nicanor Cimpoeșu, Dumitru Filipeanu, Bogdan V. Șerbănoiu, and Nelu C. Cherecheș 2021. "Study of an Ecological Cement-Based Composite with a Sustainable Raw Material, Sunflower Stalk Ash" Materials 14, no. 23: 7177. https://doi.org/10.3390/ma14237177

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