Study of the effect of diatomite on physico-mechanical properties of concrete

Macedo, Antônio; Silva, A. S.; Luz, D. S. da; Ferreira, Ruan L.S.; Lourenço, Cléber S.; Gomes, Uílame Umbelino

doi:10.1590/0366-69132020663772561

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…However, the mortars that had been amended with 15% calcined diatomite powder showed the best mechanical characteristics both at low and high temperatures [ 45 ]. The optimal percentage of diatomite replacement for cement, according to Macedo et al [ 46 ], was determined to be 10%, since better results were yielded indicating that diatomite has a good potential as a partial substitute for cement in concrete construction.…”

Section: Sustainability Of Diatomaceous Earth As a Concrete Productio...mentioning

confidence: 99%

“…Diatomite is made up of cylindrical particles with a square cell structure and a surface covered with micropores, which explains its high porosity and low density [ 46 ]. It has unique engineering properties including a high specific surface area, low dry density, high friction angle, high compressibility, and an unstable response under dynamic loads [ 127 ].…”

Section: Characterization Of Diatomaceous Earthmentioning

confidence: 99%

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A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

et al. 2022

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The development of geopolymer building composites at a lower cost with a smaller carbon footprint may lessen the growing concerns about global warming brought on by emissions of a critical greenhouse gas (CO2) paired with the high production costs in the cement sector. Diatomaceous earth, commonly used as an admixture or partial replacement of cement owing to its most effective pozzolanic properties, has been investigated as a precursor in geopolymer concrete development. Several studies have been examined to develop a greater understanding of its characterization, inclusion status, and impacts on the performance aspects of concrete. The literature review showed that using diatomaceous earth is one of the effective ways to create sustainable, insulating, lightweight building materials while minimizing the harmful economic and environmental effects of industrial solid wastes. However, since most studies have focused on its integration as a partial cement substitute or a replacement for fine aggregate, further research on diatomaceous earth-based clinker-free concrete is required. A lack of research on geopolymer concrete’s reinforcement with either natural or synthetic fibers, or a combination of the two, was also discovered. This review also showed that there has been remarkably little effort made towards theoretical property correlation modeling for predicting concrete performance. It is anticipated that the detailed overview presented herein will guide potential researchers in defining their future paths in the study area.

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Section: Sustainability Of Diatomaceous Earth As a Concrete Productio...mentioning

confidence: 99%

Section: Characterization Of Diatomaceous Earthmentioning

confidence: 99%

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

et al. 2022

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“…On the one hand, a significant DOI No. : http://doi.org/10.53550/EEC.2022.v28i02.065 increase in compressive strength has been found (Stamatakis, et al, 2003;Macedo, et al, 2020). In cement pastes, Stamatakis et al (2003) indicated that 15% diatomite increase the compressive strength by 19.6%, whereas, Fragoulis et al (1997) reported that 10% diatomite increase the strength by 11.6%.…”

Section: Introductionmentioning

confidence: 98%

“…In mortar, Pokony et al (2019) have found that 20% diatomite can developed the compressive strength of mortar by 14%. In concrete, Pokony et al (2016) and Macedo et al (2020) have found that the concrete containing until 10% diatomite has a higher compressive strength than concrete without diatomite. On the other hand, significant reduce in compressive strength has been reported.…”

Section: Introductionmentioning

confidence: 99%

Potential use of Algerian natural diatomite as pozzolanic and insulator material in cement mortar

Omar¹,

Fatiha²,

Marwa³

et al. 2022

EEC

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The aim of this article is to valorize the use of Algerian diatomite as natural pozzolan and insulator material in mortars manufacturing. The diatomite was characterized using X-ray fluorescence, X-ray diffraction, and SEM analysis. The pozzolanic activity of the diatomite was assessed by strength activity index according to ASTM C618 standard specification. The mechanical strength and thermal conductivity were investigated on mortar mixtures prepared by replacing cement by 10, 20, 30 and 40% of diatomite. The experimental results indicated that: X-ray fluorescence, X-ray diffraction and pozzolanic activity index tests confirmed the suitability to use the Algerian diatomite as natural pozzolans. The compressive and flexural strengths of mortars containing up to 20% diatomite decrease slightly compared than mortar without diatomite. Finally, the decreasing of thermal conductivity indicates an improvement on thermal insulation of diatomite mortars.

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“…Assim, é essencial que haja maneiras de diminuir o impacto ambiental, como por exemplo, a incorporação de rejeitos em substituição parcial da argila (Monteiro, et al, 2005). Dessa maneira, o uso de recursos naturais que apresentam propriedades pozolânicas ganhou grande importância na indústria da construção civil (Macedo, et al, 2020). Na fabricação de tijolos cerâmicos maciços, a adição de aditivos minerais ativos, em substituição a argila é de grande significado científico.…”

Section: Introductionunclassified

Secagem de placas cerâmicas híbridas argila/rejeito de diatomita: Um estudo experimental

Costa

Ferreira

Silva

et al. 2021

RSD

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Na produção de tijolos cerâmicos, tem-se na etapa de secagem um maior destaque por ser substancial no processo, uma vez que a qualidade do produto está relacionada diretamente a essa etapa. A secagem em tijolos cerâmicos maciços com diferentes percentuais de rejeitos de diatomita, foi experimentalmente realizada em uma estufa com circulação de ar forçada. Os experimentos foram realizados baseados em um planejamento experimental fatorial 2k como fatores de entrada, a temperaturas do ar (60 e 110 °C), a homogeneidade da mistura (30 e 60 min) e a porcentagem do rejeito (10 e 30 %). A partir da matriz dos resultados, analisou-se estatisticamente a influência dos parâmetros do planejamento sobre o comportamento da umidade. A cerca dos resultados do processo de secagem dos tijolos cerâmicos, concluísse que a temperatura é o principal parâmetro que controla a retirada de umidade do material. Foi observado que o rejeito de diatomita diminui a retenção de água nos corpos de prova, sendo os melhores resultados encontrados para as misturas com 30% de rejeito. Entretanto, verificou-se o inverso para o tempo de homogeneização, havendo a tendência de maior retenção de água para maiores tempos.

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Study of the effect of diatomite on physico-mechanical properties of concrete

Cited by 9 publications

References 11 publications

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

A Review on the Incorporation of Diatomaceous Earth as a Geopolymer-Based Concrete Building Resource

Potential use of Algerian natural diatomite as pozzolanic and insulator material in cement mortar

Secagem de placas cerâmicas híbridas argila/rejeito de diatomita: Um estudo experimental

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