CLASSIFICAÇÃO MORFOLÓGICA DE AREIAS RECICLADAS POR ANÁLISE DE IMAGENS

Construction and demolition waste (CDW) has become one of the most important environmental problems in large and medium-sized cities around the world. Classification and segregation of CDW particles constitute the main difficulties for their recycling. The present paper proposes a methodology for mo...

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Bibliographic Details
Published in:Tecnologia em metalurgia, materiais e mineração materiais e mineração, 2011-10, Vol.8 (4), p.267
Main Authors: Gomes, Otávio da Fonseca M, Lima, Paulo Roberto L, Brisola, Daisiana Frozi, Gomes, Bruna Maria da C, Fontes, Ariella Vianna, Paciornik, Sidnei
Format: Article
Language:Portuguese
Subjects:
Ceramics
Classification
Concrete
Construction materials
Demolition
Recognition
Recycling
Scanning electron microscopy
Success
Surface layers
Texture
Waste disposal
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Summary:Construction and demolition waste (CDW) has become one of the most important environmental problems in large and medium-sized cities around the world. Classification and segregation of CDW particles constitute the main difficulties for their recycling. The present paper proposes a methodology for morphological classification of particles of recycled sands from CDW that consists in a typical supervised classification procedure. It uses size, shape and texture description parameters to discriminate between CDW particles from mortar, ceramic and concrete observed with scanning electron microscopy technique. The classification system reaches a reasonable success. The total success rate obtained is 73.96% and the success rates for mortar and ceramic are greater than 80%. The main limitation is the recognition of the concrete particles; the best result obtained for its success rate is 56.30%.
ISSN:2176-1515
2176-1523
DOI:10.4322/tmm.2011.042