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Using graphene oxide as means of improvement of concrete: a brief review

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Resumo:The use of nanomaterials (NM) to improve the performance of cement and concrete matrixes nowadays appears as a potential alternative to the exclusive use of Portland cement (PC). Similarly, there is currently no doubt in the construction industry (CI) about the pressing need to reduce consumption of PC. The CI represents the world's third-largest industrial energy consumer, and the component related to the production of PC alone represents 7% of the carbon dioxide (CO2) emissions globally (OECD, 2018). PC is undoubtedly the most used material in construction in terms of its relative volume. Raw materials for PC production are generally plentiful and are available throughout the world. It is possible to state that there is, at this moment, no other material, with the same availability as the PC, that is able to fulfil the construction’s technical requirements as the concrete’s main component. In this sense, it is imperative that the cement industry obtains viable technical solutions that allow the reduction of PC consumption. That reduction can be achieved either by its direct replacement with another material (as for example with the use of fly ash), or by improving the cement and concrete matrix performance with the addition of new materials such as NM. This second option is quite interesting since it allows, for example, to maintain the cement and concrete matrix properties/characteristics, reducing PC consumption by adding a tiny amount of a NM.
Autores principais:Evangelista, Luis
Outros Autores:Raposeiro Da Silva, Pedro
Assunto:Portland cement Concrete Graphene oxide Mechanical property
Ano:2019
País:Portugal
Tipo de documento:documento de conferência
Tipo de acesso:acesso aberto
Instituição associada:Instituto Politécnico de Lisboa
Idioma:inglês
Origem:Repositório Científico do Instituto Politécnico de Lisboa

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