Desenvolvimento de blocos confeccionados com escória proveniente da reciclagem do aço / Development of blocks made with slag from steel recycling

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This reasearch aims at evaluating the use of slag from steel making in the production of self-supported blocks for masonry. The largest residual volume generated from the steel making process is the slag, which is used for cement production and paving of roads. There is a lot of researches and papers issued about such subjects. However, the use of slag to manufacture self-supported blocks was not found in the technical literature over masonry. The methods and parameters applied to evaluate standard masonry materials were adapted to allow a proper evaluation of these self-supported blocks made of slag. The first step was the definition of an ideal granulometry to be used as aggregate. The next step was the definition of the composition of the mixture. As the slag is a water-repellent material, it was necessary to add other elements in order to ensure water retention and to allow a proper plastic conformation. The blocks were moulded in a hydraulic press, that defined the block shape and its manufacturing process. The slag block has gone through many tests and the results has shown that it is technically satisfactory as a waterproof and masonry material. The slag, as a stell making by-product, is an abundant and non-expensive material, thus becoming economically viable and competitive. It can be applied in many areas of civil construction, making an important contribution for a sustainable social and economic model.

ASSUNTO(S)

self-supported blocks residual resíduo slag recycling escória blocos modulares reciclagem

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