VIABILIDADE DO USO DE CINZAS DE BAGAÇO DE CANADE- AÇÚCAR (CBC) RESIDUAIS DO ESTADO DE GOIÁS COMO ADIÇÃO MINERAL AO CIMENTO PORTLAND
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2009-11-13
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Universidade Federal de Goiás
Resumo
Aiming to reduce the generation of waste in industrial and agriculture processes,
especially the pollutants, and reuses them best, whether in the production process or as raw
material in the preparation of other materials, it has increasingly invested in searches for the
processing of waste in industrial by-products of commercial interest.
With increasing energy demand in the world, Brazil is an ecologically correct fuel
producer, such as ethanol and bio diesel. In the State of Goiás there is a large potential for
growth of industry cultivating sugar-cane, responding to sustainable energy issues.
Furthermore, the recent national development policies point to the expansion of the sugaralcohol
sector in the state.
With the intensification of the industrial process of sugar-cane in Goiás, it is,
increasingly, the occurrence of problems associated with disposal of waste generated by this
sector. Much of that waste can be used to produce new building materials and meet the
growing demand for alternative technologies, simpler, efficient and concerned about the
sustainability of production processes.
The research on the use of sugar-cane bagasse ash (CBC) as mineral addition to
cement is still incipient. However, studies indicate the feasibility of using ash in conjunction
with Portland cement.
Additions are mineral materials with pozzolanic properties, cementations or
simply act as filler and can be added to cement, before or during mixing, in amounts generally
ranging between 5 and 70% by weight of cement. In the specific case of the sugar-cane
bagasse ash (CBC), produced by the co-generation of electricity, due to the predominant
presence of silica in its chemical composition, this residue appears as raw material for
potential production of Portland cement compounds.
The experimental level of this study was based on an assessment of the sugaralcohol
sector in the state of Goiás to the implementation of chemical and physical testing of
CBC, development of composite cement with replacement of CBCs at different levels (5%,
10% and 20%) and tests to characterize the cement composite, to produce cement with the
addition of sugar-cane bagasse ash (CBC) and attend the needs of the cement industry.
The results shows up that mortars produced with of cane bagasse ash, with the
boiler firing temperature at 800 º C, so instant, crushed for 4 h, with replacement of Portland
cement up to 20% reached resistance to compression close to the reference mortar .
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Citação
SOUSA, Lara Rubia Lopes de. FEASIBILITY OF THE USE OF SUGAR CANE BAGASSE ASH
(CBC) FROM GOIÁS STATE TO REPLACE PORTLAND CEMENT. 2009. 121 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2009.