Fine demolition wastes as Supplementary cementitious materials for CO2 reduced cement production

Tokareva, Anna; Kaassamani, Sinan; Waldmann, Danièle

doi:10.1016/j.conbuildmat.2023.131991

Cited by 18 publications

(2 citation statements)

References 78 publications

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“…In the information recorded in Table 5 , potassium alumino-silicate is observed in the samples with the lowest amount of slag due to the solid amorphous contribution [ 32 ]. Notably, the presence of potassium alumino-silicates in the mixture, due to the content of potassium oxides in the rice husk ash, favors the formation of lamellar compounds of the feldspar family [ 33 ]. The presence of these lamellar compounds could increase viscosity, improving the maneuverability of the mixtures.…”

Section: Resultsmentioning

confidence: 99%

Enhancing Concrete Durability and Strength with Fly Ash, Steel Slag, and Rice Husk Ash for Marine Environments

Barragán-Ramírez,

González-Hernández,

Bautista-Ruiz

et al. 2024

Materials

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The effect of an alternative source of silica, based on class F fly ash mixed with blast furnace slag and activated by rice husk ash (RHA), to produce concrete exposed to marine environments was evaluated. Four mixtures activated by the combination of 85% NaOH 14M + 15% RHA were manufactured to achieve a liquid/solid ratio of 0.20. Fly ash was incorporated into the steel slag mixture at addition percentages of 20, 40, 60, and 80%, and evaluated at 28, 900, and 1800 days for pore and chloride ion absorption. In general, including rice husk ash in the mixture of fly ash and steel slag significantly affected mechanical performance because it was possible to obtain concrete with high mechanical resistance. Concerning the durability evaluation, the effect of the activator generated by rice husk ash was observed, and the increase in steel slag added to the cementitious samples improved the capacity of the material to resist the penetration and diffusion of chloride ions.

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Section: Resultsmentioning

confidence: 99%

Enhancing Concrete Durability and Strength with Fly Ash, Steel Slag, and Rice Husk Ash for Marine Environments

Barragán-Ramírez,

González-Hernández,

Bautista-Ruiz

et al. 2024

Materials

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“…Esforços recentes na literatura são observados para viabilizar o uso do pó de RCC como material cimentício suplementar ao cimento Portland (DUAN et al, 2020;OLIVEIRA;DEZEN;POSSAN, 2020;TOKAREVA;KAASSAMANI;WALDMANN, 2023), no entanto são necessários alguns tratamentos para melhoria da reatividade e de suas caraterísticas, podendo ser através da ativação mecânica, química (MENG et al, 2021) ou térmica (ZHANG et al, 2022).…”

Section: Introductionunclassified

Eficiência da moagem de pós (<0,15 mm) reciclados de resíduos da construção civil (RCC) na presença de aditivo

Risson,

Stopassoli,

Proença

et al. 2023

Viii Encontro Nacional De Aproveitamento De Resíduos Na Construção

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Esse estudo tem como objetivo avaliar a eficiência da moagem com uso de aditivo sobre o tamanho das partículas e a superfície específica (BET) de pós (<0,15 mm) reciclados de Resíduos da Construção Civil (RCC). Para isso, utilizou-se como referência o pó de concreto (PC) e o pó misto (PM), obtidos através da cominuíção respectivamente de corpos de prova de concreto e de areia reciclada mista (materiais cerâmicos e cimentícios). Os pós de RCC foram submetidos ao processo de moagem em moinho de bolas planetário, em diferentes tempos (30, 60, 120, 180 e 240 minutos), teores (0,05, 0,1, 0,5 e 1%) e tipos de aditivos (propilenoglicol, hexametafosfato de sódio e trietanolamina). Diante dos resultados, verifica-se que o tratamento mais eficiente para o pó de concreto foi o de 60 minutos com o aditivo propilenoglicol no teor de 1%. Para o pó misto, devem ser verificados outros teores de aditivos, caso haja a necessidade de um material mais fino.

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Assessment of the potential use of construction and demolition waste (CDW) fines as eco-pozzolan in binary and ternary cements

de Lima,

de Lira,

Rojas

et al. 2024

Construction and Building Materials

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Fine demolition wastes as Supplementary cementitious materials for CO2 reduced cement production

Cited by 18 publications

References 78 publications

Enhancing Concrete Durability and Strength with Fly Ash, Steel Slag, and Rice Husk Ash for Marine Environments

Enhancing Concrete Durability and Strength with Fly Ash, Steel Slag, and Rice Husk Ash for Marine Environments

Eficiência da moagem de pós (<0,15 mm) reciclados de resíduos da construção civil (RCC) na presença de aditivo

Assessment of the potential use of construction and demolition waste (CDW) fines as eco-pozzolan in binary and ternary cements

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