Efeito da adição de areia de fundição e cal em algumas propriedades de solos argilosos
DOI:
https://doi.org/10.4237/transportes.v20i1.577Abstract
Os elevados custos de descarte da areia de fundição e as suas boas propriedades para utilização em construção civil têm estimulado pesquisas de alternativas para o seu reuso e, nesse sentido, a construção de pavimentos oferece oportunidades para que a areia de fundição seja reaproveitada. Assim, este trabalho conduziu um programa laboratorial de ensaios para avaliar algumas propriedades mecânicas de interesse à engenharia de pavimentos de misturas de areia de fundição com solos argilosos e cal, para sua possível utilização como material de construção de camadas de pavimentos. Os resultados obtidos mostram que solos argilosos lateríticos misturados com 60 e 70% de areia de fundição poderiam ser utilizados em bases e sub-bases de pavimentos de baixo volume de tráfego e que solos argilosos não lateríticos misturados com 40, 60 e 70% do resíduo e estabilizados com cal, também poderiam ser utilizados em sub-bases de pavimentos de baixo volume de tráfego.
Palavras-chave: areia de fundição residual, cal, solos argilosos.
Abstract: The good engineering properties of foundry sand and the high costs of landfilling have stimulated the researchers to find new alternatives for foundry sand reuse. Pavement construction offers opportunities for the beneficial reuse of this residue. In that way, this paper presents the results of a laboratory testing program to asses some properties of sand-clayey soils stabilized with lime, according to some pavement engineering properties and focusing on their applicability as low volume traffic road bases and sub-bases materials. The results show that Clayey Lateritic Soils mixed with 60 and 70% of Foundry Sand could be used as pavement bases and sub-bases and, Clayey Non Lateritic Soils mixed with 40, 60 and 70% of Foundry Sand and stabilized with lime could be used as pavement sub-bases in low volume traffic roads.
Keywords: waste foundry sand, lime, clayey soils.
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