2021-02-26
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Recycled Materials
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Usages
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Local examples
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Aggregate
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Sub-base material for road construction,hardcore for foundation works, base/fill for drainage,aggregate for concrete manufacture and general bulk fill
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Pilot studies carried out by works departments
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Asphalt
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Aggregate fill and sub-base fill
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Under investigation by Highways Department
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Excavated materials
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Filling materials
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Housing Department's building projects
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Public fill
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Land reclamation
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Land formation at Public Filling Areas
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Pulverized fuel ash
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Manufacture of concrete products, uses in fill and reclamation, highway construction and reinforced soil structures
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Construction of Chek Lap Kok Airport, use in structural concrete for foundation works in the Housing Department's building projects
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Metals
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Manufacture of new metals
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Widely practised in local construction industry
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Glass
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Manufacture of eco-pavers, eco-partition blocks and glassphalt, substitute for sand and aggregates as mortar, backfilling and reclamation materials
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Use of eco-pavers by Works Departments for road paving. Studies and trial uses are being carried out by Works Departments for other applications
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Plastic
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Synthetic materials in form of plastic lumber for landscaping, horticulture and hydraulic engineering
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Use at some public recreational facilities as garden furniture
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Rubber
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Manufacture of rubber slate tile use in roofing and sport / playground surface mat
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Use at some public recreational facilities as playground surface mat
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Expanded polystyrene
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Manufacture of lightweight concrete for non-structural works
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Use in manufacturing lightweight concrete in Housing Department's building projects
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