ARAÚJO, M. S.; http://lattes.cnpq.br/0430424104014645; ARAÚJO, Mayara Silveira de.
Resumo:
The sludge that is generated due to the operation of the Water and Sewage Treatment
Stations is noted for being a semi-solid material that has in its composition constituents
that are dangerous to the environment, such as heavy metals and pathogenic
pollutants. The most common solutions for the disposal of this waste in Brazil are to
send it to landfills and, in some cases, are applied to rivers, which stands out for being
highly harmful to the environment. In view of the above, the application of these
residues for paving is emphasized as an alternative for using the residue. The present
work had as objective to study the feasibility of application of the residues of the
stations in base and sub-base layers of the paving with the use of the stabilization
technique. The methodology adopted for the research took place through tests for the
physical characterization of materials based on technical standards and subsequently,
compaction tests and the California Support Index were performed for the contents of
5% and 10% of the residues, for qualitative analysis of the use of additives to apply the
mixture in base and sub-base layers of floors a bibliographic review was carried out.
This work is known that the soil stabilized with the sludge from the water treatment
plant presents better results in terms of resistance compared to the stabilization with
the sludge from the sewage treatment plant. From the review of academic papers, it
was verified that both residues showed potential for chemical stabilization and are
characterized as an alternative to the use of the residue for use in paving.