recycling of demolished concrete in hong kong
Recycled Aggregate Concrete for Structural Use
Hansen TC (1992) Recycling of demolished concrete and masonry. Taylor & Francis, London/New York. Google Scholar ... Hong Kong, January 2003. Google Scholar Poon CS, Shui ZH, Lam L et al (2004) Influence of moisture states of natural and recycled aggregates on the slump and compressive strength of concrete. Cem Concr Res …
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The impact of innovative technologies in construction
As construction activities become more intensive in developing countries, increasing improperly managed construction and demolition waste (CDW) brings serious environmental impacts. Recycling is a beneficial way to dispose of CDW that reduces environmental impact and brings economic benefits, especially for concrete. China is the …
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Management and Recycling of Demolition Waste in Hong Kong
Abstract. Over the past decade, municipal solid waste generation in Hong Kong has been increasing. One of the characteristics of waste generation is the disproportionally large quantity of construction waste among all types of solid waste. Building debris resulting from demolition works constitutes a substantial proportion of the waste …
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Quantifying the Impact of Construction Waste Charging Scheme …
A considerable amount of solid wastes is generated every year from construction and demolition (C&D) activities in Hong Kong. The C&D waste can be classified into inert and noninert wastes, in which the inert waste is normally disposed of in public fills as reclamation materials and the noninert waste is dumped at landfills.
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Construction and Demolition Waste Recycling | PPT
Hong Kong C&D Recycling Sovereign territory in China – 7.3 million residents; Inert waste – rock, rubble, concrete, brick, sand soil – Sent to public filling facilities for land reclamation; Non-inert waste – Organic material and contaminated inert waste – Disposed in landfill. Approximately 20% non-inert, 80% inert
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Use of Demolished Concrete Wastes As Coarse Aggregates in …
In this work the usability of demolished waste as coarse aggregates in new concrete is attempted. This experimental investigation involves evaluating the properties of the constituents of concrete including the demolished concrete wastes which shall be used as coarse aggregates in new concrete with the aim of producing high strength …
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On relationships between the mechanical properties of recycled
Hansen TC (1992) Recycling of demolished concrete and masonry (E & FN SPON, London) Li JB (2004) Study on mechanical behaviour of recycled aggregate concrete (Master thesis, Tongji University) ... Hong Kong, China, 4–6 December, 1407–1414. Xiao J-Zh, Li J.B, Zhang Ch (2005) Mechanical properties of recycled …
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recycling of demolished concrete in hong kong
recycling of demolished concrete in hong kong. A Report on the Use of Recycled Aggregates in Low, in Low Grade Concrete KK LIU and WH TAM Public Works Central Laboratory,to remove
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Review Of The Use Of Construction And Demolition …
1 International Journal of Engineering and Technology Research Vol. 2, No. 4, April 2014, pp. 1 - 8, ISSN: 2327 - 0349 (Online) Available online at Concrete rubble usually constitute the largest proportion …
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Assessment of durability of recycled aggregate concrete …
As more than 50% construction and demolition (C&D) wastes are composed of concrete debris in Hong Kong, recycling this debris into Recycled Aggregate (RA) for production of Recycled Aggregate Concrete (RAC) is an efficient way to alleviate the burden on landfill areas. Since RA is generated from concrete debris which has undergone …
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Removal of cement mortar remains from recycled
Until recently almost all demolished concrete wastes in Hong Kong were deposited in landfill areas which are in short supply. Hence, reducing waste generation is a pressing issue. ... In recycling concrete, the crushing process leaves weak mortar particles and surface cracks throughout the recycled concrete aggregates (RCA). Thus, the …
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Recycling of Construction & Demolition (C & D) Materials …
Hong Kong is facing a challenge to handle a significant amount of Construction and Demolition (C&D) materials to be generated per year from local construction activities. A good proportion of these C&D …
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Implementing on-site construction waste recycling in …
... By contextualizing the issue, this paper demonstrates the challenges and facilitators to implementing on-site CDW recycling. However, this study examined the …
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Evaluations of existing waste recycling methods: A Hong …
Although there is a recycling plant in Tuen Mun Area 38 in recycling demolished concrete in Hong Kong, long transportation time creates difficulties. The …
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Guidelines for Selective Demolition & On Site …
Broken concrete and rock can be delivered to: Construction and Demolition Material Recycling Facility at Tuen Mun Area 38 . …
ادامه مطلبEvaluations of existing waste recycling methods: A Hong Kong …
Germany clearly has the highest recovery rates when compared with other countries; 169%, 108%, 105% and 88% of recovery rates for paper, plastic, metals and glass, respectively. Hong Kong recycling practices is lagging behind in comparison with other countries. Much of the construction wastes go to landfill. There are many.
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(PDF) A Feasibility Study of Recycling of Construction and Demolition
These four criteria are then applied in the context of Hong Kong for the evaluation of the management performance of construction and demolition waste, clinical waste and chemical waste.
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Recycling of Demolished Concrete
Title: Recycling of Demolished Concrete Author(s): S. Nagataki and K. lida Publication: Symposium Paper Volume: 200 Issue: Appears on pages(s): 1-20 Keywords: aggregate; carbon dioxide emissions; cement; concrete; recycling DOI: 10.14359/10568 Date: 6/1/2001 Abstract: In Japan, it has been predicted that enormous quantities of …
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Recycling of Steel Bars from Demolished Structures
strength, the concrete strength and cover are thus more essential. All new and used steel remained inside the concrete, after the fragmented cylinder was checked, as shown in the figure. 7 and Fig. 8; e.g. bond strength depends instead of psychical adhesion between the concrete and steel on the deformations of the steel bars.
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Implementing on-site construction waste recycling in …
Currently, there are only three off-site recycling plants in Hong Kong, one for recycled concrete blocks and pavers, one for recycled aggregates, and another for …
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The effectiveness of Hong Kong's Construction Waste Disposal Charging
Poon, C.S. (1997) Management and recycling of demolition waste in Hong Kong. Waste Management and Research, 15, 561-572. Google Scholar. Poon, C.S., Yu, T.W. & Ng, L.H. (2001) A Guide for Managing and Minimizing Building and Demolition Waste. The Hong Kong Polytechnic University, Hong Kong. ... Nano-engineered …
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Waste Statistics | Waste Reduction
PDF - Hong Kong 2013 Municipal Solid Waste - At a glance: PDF - Monitoring of Solid Waste in Hong Kong 2012: PDF - Monitoring of Solid Waste in Hong Kong 2011: PDF - Monitoring of Solid Waste in Hong Kong 2010: PDF - Monitoring of Solid Waste in Hong Kong 2009: PDF - Monitoring of Solid Waste in Hong Kong 2008 (updated on 12 Jul 10)
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Removal of cement mortar remains from recycled
Until recently almost all demolished concrete wastes in Hong Kong were deposited in landfill areas which are in short supply. Hence, reducing waste generation is a pressing issue. ... Although recycling of concrete demolition waste can provide opportunities for saving resources, energy, time, and money, the quality of recycled …
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Management and Recycling of Demolition Waste in Hong Kong
The paper outlines a method for the estimation of the quantity of demolition waste generation in Hong Kong and evaluates the different options that are available for demolition waste management. ... Hansen, T.C. (1992) Recycling of demolished concrete and masonry. Report of Technical Committee 37-DRC, Demolishing and …
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Guidelines for Selective Demolition & On Site Sorting
Respective Recovery/Recycling Companies in Hong Kong (A list of recovery/recycling companies in Hong Kong can be obtained from EPD's ... shows the implementation of the Selective Demolition. The concrete structure is demolished after all domestic waste has been removed. Photo Nos. 2 – 6.
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Management and Recycling of Demolition Waste in …
Abstract. Over the past decade, municipal solid waste generation in Hong Kong has been increasing. One of the characteristics of waste generation is the …
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Management and Recycling of Demolition Waste in …
The paper outlines a method for the estimation of the quantity of demolition waste generation in Hong Kong and evaluates the different options that are available for …
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Building demolition waste management through smart BIM
There are some problems when contemplating C&D waste management practice in Hong Kong. First, the lack of landfill space is existing (Wu et al., 2020). In counterweight to Hong Kong's massive construction activities, the territory however has a very limited capacity to process all generated C&D waste (Bao et al., 2020, Jaillon et al., …
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A review on the viable technology for construction waste recycling
Recycling, being one of the strategies in minimization of waste, offers three benefits (Edwards, 1999): (i) reduce the demand upon new resources, (ii) cut down on transport and production energy costs and (iii) use waste which would otherwise be lost to landfill sites.Construction and demolition (C&D) wastes including demolished concrete …
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Use of recycled aggregates in molded concrete bricks and blocks
In Hong Kong, a huge quantity of construction and demolition (C&D) waste is produced every year [1]. The disposal of waste has become a severe social and environmental problem in the territory. The possibility of recycling of waste from the construction industry is thus of increasing importance [2], [3]. In addition to the …
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