Análise da mistura de chamote cerâmico com solo laterítico para a utilização nas camadas de base e sub-base de pavimentos rodoviários

Abstract

In Brazil, about 5.3 billion ceramic pieces are produced per month, mainly for the construction industry, of which the production of tiles, blocks and structural blocks stands out, however, in the range of 159 million to 265 million parts are discarded monthly by the ceramic industries because they are defective. These residues are called shingles, which are a byproduct of waste from ceramic material after burning. In the search for a correct destination for these residues, laboratory tests were performed, subjecting the materials first to a crushing process, for later physical characterization and determination of the properties, for the use in layers of road pavement, according to the minimum criteria required by the Manual of Paving of DNIT (2006) for application in base and sub-base layers. In order to carry out the study, the ceramic residues in the city of. Were collected lateritic soil in the rural area of the city of Teresina, and were transported to a mining company located in Teresina - PI, where they were ground and sent to the laboratory to be mixed to the soil manually and performed the Granulometry, Liquidity Limit, Plasticity Limit, Sand Equivalent, Compression and California Support Index tests. The results showed that mixtures that received 20% and 30% of ceramic tiles were potentially suitable for use in base layers, whereas for sub-base layers the contents of 20%, 30% and 40% are suitable to be used, proving to be a totally viable alternative. Thus, it is possible to provide a destination for the residues that accumulate in the courtyards of the ceramic industries and to reduce the exploitation of deposits used for the execution of these layers of the road pavement