Banca de DEFESA: FILIPE BRUNO DOS SANTOS SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : FILIPE BRUNO DOS SANTOS SILVA
DATA : 26/08/2016
HORA: 10:00
LOCAL: SETOR IV - BLOCO F - SALA 1
TÍTULO:

EVALUATION OF BLENDS OF PORCELAIN TILE POLISHING RESIDUE AND SOIL FOR USING IN ROAD EMBANKMENTS


PALAVRAS-CHAVES:

Porcelain tile polishing residue; California Bearing Ratio; compacted fill; pavement; bearing capacity


PÁGINAS: 1043
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Geotécnica
ESPECIALIDADE: Pavimentos
RESUMO:

With the growing industrial advancement, solid waste management becomes a constant challenge in society. This scenario is also a fact in Brazilian industries, including those producing ceramic materials. The polishing step in the production of porcelain tiles in ceramic industries produces large amounts of a residue consisting of ceramics remains, water and traces of abrasive discs used in the polishing step. This residue consists in a white powder of fine grain and variable chemical composition, known as Porcelain Tile Polishing Residue (RPP). In this study, was researched the use of mixes of soil and RPP for use in road embankments. The residue used was collected in a company located in Conde / PB and was studied in mixtures with a sandy-clayey soil. In the present study, was used different dosages of residue, specifically, 0% (pure soil) 5%, 10%, 15%, 20% and 40% added in relation to the dry mass of soil. Besides the characterization of materials by conducting tests to determine Atterberg limits, grain size distribution and specific solid weight, soil compaction tests were carried out to determine the CBR (California bearing ratio) and oedometer consolidation tests.  A plate load test was conducted in the laboratory with the 10% blend, comparing to plate load tests data on specimens of pure soil and 5% blend obtained in the technical literature. In virtue of the chemistry of the material, a preliminary study was conducted on the influence of pozzolanic activity on results. Finally, there was an environmental character analysis, based on the chemical collection and analysis of solubilized extract obtained from a sample of pure residue. The mechanical tests performed were conducted under inundated conditions, willing to reduce the influence of soil suction. The evaluation of the soil and mixtures California Bearing Ratio was made using normal and modified proctor energy. The tests showed a reduction of the average resistance of the blends compared to the pure soil’s one. For the consolidation tests, it was observed that the blend with 5% added RPP had a smaller deformation than the specimen of pure soil in the same stress values, unlike the others mixtures which were more deformable. The results of the plate load test showed that the 10% blend has a lower bearing capacity than the pure soil and the 5% blend with bigger settlements for the same stress values. The effect of pozzolanic activity on the results was studied from tests with samples that stood drying for a time after flood, so that the reactions could occur. The results showed that the tests with drying period generally show a slight improvement on mechanical characteristics. With all the data obtained in this study, it can be said that, in general, the residue does not significantly change the mechanical behavior of soil to levels up to 10% addition. For values above that, there is a poorer mechanical performance, but depending on use, does not preclude its application, making all mixtures studied potential materials for execution of embankments in road works. The pure soil and 5% blend compressed in modified energy can also be used as sub-base material pavement layers. The other mixtures can be used as subgrade improvement layer, if their CBR value is higher than the subgrade in question. Regarding the environmental character of the research, it was observed that for the studied parameters, the concentrations are below the limits suggested by NBR 10004.


MEMBROS DA BANCA:
Externo à Instituição - ALEXANDRE DA COSTA PEREIRA - IFRN
Presidente - 1524077 - CARINA MAIA LINS COSTA
Externo à Instituição - JEFFERSON LINS DA SILVA - USP
Interno - 2551234 - YURI DANIEL JATOBA COSTA
Notícia cadastrada em: 23/08/2016 16:54
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