Avaliação da resistência á compressão de pisos intertravados produzidos com RCD.
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Tipo
TCC
Data de publicação
2021-12
Periódico
Citações (Scopus)
Autores
Takahashi, Daniel Hissashi
Coracini, Tiago Nogueira
Coracini, Tiago Nogueira
Orientador
Peres, Renato Meneghetti
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ISSN da Revista
Título de Volume
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Resumo
O setor da construção civil é um dos que consome e gera uma grande quantidade de resíduos sólidos. Devido a isso, grande parte dos materiais restantes de obras são descartados de modo inadequado e não são reciclados, perdendo seu valor e gerando um volume grande de resíduos, os chamados Resíduos de Construção e Demolição (RCD). Um material altamente utilizado em obras da construção civil é a cerâmica branca, mais encontrada em revestimentos, porcelanas, como vasos, louças, pias e demais objetos de decoração. As cerâmicas brancas, quando trituradas e moídas, podem ser utilizadas como agregados miúdos na produção do concreto, substituindo parcialmente os componentes naturais, ganhando características relevantes em relação à resistência mecânica e durabilidade do concreto, podendo ser reaproveitada em blocos de concreto não estrutural. Os materiais cerâmicos fornecem componentes desejáveis junto ao cimento, a característica pozolânica, onde o hidróxido de cálcio, na presença de água, reage com os agentes silicosos e aluminosos amorfos, presentes nas pozolanas, formando hidratos de silicato de alumínio (CASH) e hidratados de silicato de cálcio (CSH), que melhoram as propriedades dos materiais à base de cimento. Este trabalho aborda os pisos intertravados, chamados pavers, como são fabricados, quais os tipos e classificações. Tem como objetivo, estudar e avaliar as características de cerâmica branca reciclada no traço do concreto, para atingir resistências à compressão suficiente para empregá-lo na camada superficial de pavimentações intertravadas, contribuindo assim para o meio ambiente. Sendo assim, foi concluído que a substituição da areia com granulometria inferior a 1,18mm pela cerâmica reciclada moída no traço do concreto ocasionou no ganho de resistência à compressão (aos 28 dias) em 12,5% e redução de aproximadamente 20% no consumo de água quando comparado ao traço natural.
The civil construction sector is one of those that consume and generate a large amount of solid waste. Due to this, a large part of the remaining materials from works are improperly disposed of and are not recycled, losing their value and generating a large volume of waste, the so-called Construction and Demolition Waste (CDW). A material highly used in civil construction works is white ceramic, more commonly found in coatings, porcelain, such as vases, dishes, sinks and other decorative objects. White ceramics, when crushed and ground, can be used as fine aggregates in the production of concrete, partially replacing natural components, gaining relevant characteristics in relation to the mechanical strength and durability of concrete, and can be reused in non-structural concrete blocks. Ceramic materials provide desirable components with cement, the pozzolanic characteristic, where calcium hydroxide, in the presence of water, reacts with the amorphous siliceous and aluminous agents present in pozzolans, forming aluminum silicate hydrates (CASH) and hydrates of calcium silicate (CSH), which improve the properties of cement-based materials. This work discusses interlocking floors, called pavers, how they are manufactured, what types and classifications. Its objective is to study and evaluate the characteristics of recycled white ceramic in the concrete mix, in order to achieve compression strengths sufficient to use it in the surface layer of interlocking pavements, thus contributing to the environment. Therefore, it was concluded that the replacement of sand with a particle size of less than 1.18mm by recycled ceramic ground in the concrete mix resulted in a gain in compressive strength (in 28 days) of 12.5% and a reduction of approximately 20% in water consumption when compared to natural trait.
The civil construction sector is one of those that consume and generate a large amount of solid waste. Due to this, a large part of the remaining materials from works are improperly disposed of and are not recycled, losing their value and generating a large volume of waste, the so-called Construction and Demolition Waste (CDW). A material highly used in civil construction works is white ceramic, more commonly found in coatings, porcelain, such as vases, dishes, sinks and other decorative objects. White ceramics, when crushed and ground, can be used as fine aggregates in the production of concrete, partially replacing natural components, gaining relevant characteristics in relation to the mechanical strength and durability of concrete, and can be reused in non-structural concrete blocks. Ceramic materials provide desirable components with cement, the pozzolanic characteristic, where calcium hydroxide, in the presence of water, reacts with the amorphous siliceous and aluminous agents present in pozzolans, forming aluminum silicate hydrates (CASH) and hydrates of calcium silicate (CSH), which improve the properties of cement-based materials. This work discusses interlocking floors, called pavers, how they are manufactured, what types and classifications. Its objective is to study and evaluate the characteristics of recycled white ceramic in the concrete mix, in order to achieve compression strengths sufficient to use it in the surface layer of interlocking pavements, thus contributing to the environment. Therefore, it was concluded that the replacement of sand with a particle size of less than 1.18mm by recycled ceramic ground in the concrete mix resulted in a gain in compressive strength (in 28 days) of 12.5% and a reduction of approximately 20% in water consumption when compared to natural trait.
Descrição
Palavras-chave
RCD , intertravado , reciclagem , CDW , interlocked , recycling