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RECYCLE OF CONSTRUCTION AND DEMOLITION WASTE

Presented by : Lingaraj PatilUnder the Guidance of : Dr. M V Renuka Devi

(Associate Professor, Civil Dept., RVCE)

CONTENT:DefinitionCategorization of CDWRecyclingWhy Recycling?Recycling ProcessLiterature ReviewProblem StatementObjectiveStrategy to mitigate problemPriority Criteria.

What is CDW?

Construction Waste Demolition Waste

Categorization of CDW:

Major components Minor componentsCement concreteBricksCement plasterSteel RubbleStone Timber/wood

Conduits Pipes Electrical fixturesPanels Others (glazed tiles,

glass panes)

Negative Impact of CDW

Recycling:

Why Recycle

Recycling Process

LITERATURE REVIEW

This paper highlights the composition of Construction and Demolition waste, the need for its recycling and options that can be implemented for its efficient use in the field of concrete technology in general.

1) CONSTRUCTION AND DEMOLITION WASTE RECYCLING FOR SUSTAINABLE GROWTH AND DEVELOPMENT

2) Economic Aspects of Construction Waste Materials in terms of cost savings – A case of Indian construction Industry.

The paper aims to focus on the economic feasibility of waste minimization of construction waste materials in terms of cost savings in India.

3) UTILIZATION OF RECYCLED AND WASTE MATERIALS IN VARIOUS CONSTRUCTION APPLICATIONS.

This study presents an initial understanding of the current strengths and weaknesses of the practice intended to support construction industry in developing effective policies regarding uses of waste and recycled materials as construction materials.

Problem Statement:1) Major General Problems:

Shortage of Land.

Shortage of Resources.

Traffic Congestion.

Ground Water Pollution.

Environmental Impact.

Methods:

Storage and Segregation.

Collection and Transportation.

Recycling and Reuse.

Disposal.

2) Problems related to Industry.Lack of Awareness in Industry

Lack of interest from clients

Lack of proper training and education

Lack of skilled labor

Lack of market competition

Lack of Government Interventions

Lack of waste reduction approach by architects

Objectives:To have Sustainable development.

To Incorporate 3R Concept.

Prevent the depletion of Natural resources.

Ensuring Universal Education

Reduce the Time Consumption.

Waste as Renewable resource..

Strategy to Mitigate the ProblemsGovernment Initiative - Policy Implications.

Create awareness among clients and contractors.

Training and Education.

Management Interactions

Priority Criteria

First Priority

1)Change Industrial Process t0 eliminate pollution.

2)Introduction of Policies.

3)Make products that last longer and are recyclable, reusable, or easy to repair.

Second Priority

1)Reuse Product.

2)Repair Product

3)Recycle.

4)Buy reusable and recycle products.

Third Priority

1)Treat waste to reduce toxicity

2)Incinerate Waste

3)Bury waste in Landfills

4)Release waste in environment for dilution.

EFFORTS IN INDIA:

Produces 70 million tons of MSW.35% of MSW is CDW.Exponential increase in:

1) Population 2) Waste

Construction waste – 40 - 60 kg/m2

In Delhi, Varanasi, Jaipur, Kolkata waste recycling plants have been situated.

In India the current process is to achieve:

Applications:Tires are used dock bumpers.Asphalt when recycled is used in pavement edges.Recycled aggregates are used in sub-base course.Glass used in decorative tile.Waste rubber in elastic paving material.Waste plastic used as signposts.Blast furnace slag as cement for concrete.Waste glass as lightweight foundation material. Landscape and garden architecture as shown

below:

Capita increase of the recycling industryMore jobs for the needy people since no

qualification is required.Work load for municipal is reduce in terms of

cleaning and also cost is reducedLow cost than the available material.Reduction of unnecessary landfills around the

city.Economic growth of the country.

Economic advantages:

Environmental Benefits

Conclusions:There should be proper guideness about the storage,

transportation, and disposal of waste.The sanitary or the health department should be made

responsible for the C&D wastes.The authority should get the day to day information

about the wastes.First and foremost most thing is to create awareness

among the engineer, contractor and the industry about recycling of the waste generated during construction.

Proper system must be brought to dispose the waste which are not of really use i.e. inert materials.

References: Hemalatha B.R, Nagendra Prasad, B.V. Venkata Subramanya, “Construction and demolition

waste recycling for sustainable growth and development” Journal of Environmental Research and Development Vol. 2 No. 4, April-June 2008.

Mansi Jain, “Economic Aspects of Construction Waste Materials in terms of cost savings – A case of Indian construction Industry” International Journal of Scientific and Research Publications, Volume 2, Issue 10, October 2012 1 ISSN 2250-3153.

Johnny Bolden, Taher Abu-Lebdeh and Ellie Fini, “Utilization of Recycled and Waste materials in various construction applications” American Journal of Environmental Science, 9 (1): 14-24, 2013 ISSN: 1553-345X, 2013.

Ranjith Kharvel Annepu, “Sustainable Solid Waste Management in India” January 10, 2012.

 Central Statistics Office Ministry of Statistics and Programme Implementation Government of India, “SAARC, India Country Report” 2013.

Colin Jeffrey, “Construction and Demolition waste recycling Dalhousie University’s Office of Sustainability” September 2011.

Waste and Recycling Notes Waste Disposal, Read Miller