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Sustainable building materials

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It is all about sustainable buildings or green buildings and a brief study of some sustainable building materials we can use for making a building sustainable and green.

Published in: Engineering
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Sustainable building materials

  1. 1. SUSTAINABLE BUILDING MATERIALS
  2. 2. WHAT IS SUSTAINABLE BUILDING ?  SUSTAINABILITY is defined as meeting the needs of present generations without compromising the ability of future generations to meet their needs.
  3. 3. Sustainable building or Green building refers to the structure which are both : • environmentally responsible and • resource-efficient throughout a building’s life cycle. Sustainable building design involves balance between • Home building and • Sustainable environment
  4. 4. OBJECTIVES OF GREEN BUILDING:  Common objectives of green building is to :  Low impact :minimize impact on natural environment  Energy efficient: reduced energy usage and water usage  Healthy: protect occupant’s health and increase productivity  Minimize waste: designed and constructed in a manner that minimizes waste, pollution and environmental degradation.
  5. 5. GOALS OF SUSTAINABLE BUILDINGS  There are a number of motives for building green, including environmental, economic, and social benefits.  It often emphasizes taking advantage of Renewable resources: for example: • Using sunlight as passive solar , active solar and photovoltaic equipments. • Using plants and tress through green roofs, rain gardens etc. • Reduction of rain-water run-off.
  6. 6. PRINCIPLES OF SUSTAINABLE BUILDING:  STRUCTURAL EFFECIENCY: to minimize the environment impact associated with all life-cycles.  ENERGY EFFECIENCY :to reduce the operating energy use.  WATER EFFECIENCY: reducing water consumption and protecting water quality.  MATERIAL EFFECIENCY: materials should be renewable,recycleable and environment-friendly.
  7. 7. WHAT IS A SUSTAINABLE MATERIAL ?  A sustainable material is any material that can be put to effective use in the present without compromising its availability for use by latter generations.  These are mainly renewable materials or the materials which can be recycled and reused.
  8. 8. SOURCES OF SUSTAINABLE MATERIALS: TWO MAIN SOURCES RENEWABLE SOURCES REUSE FROM WASTE
  9. 9. TYPES OF SUSTAINABLE MATERIALS: MATERIALS FROM RENEWABLE SOURCES  Materials significantly of plant origin.  Can be obtained from renewable sources like solar energy, wind energy, bio-gas etc.  E.g.: wood, natural fibers, polymers etc. REUSE FROM WASTE PRODUCTS AS RAW MATERIALS  They are typically the products of recycled matter.  Materials that can be dismantled and reused again.  E.g.: old plumbings, doors, crushed glass, wood chips etc.
  10. 10. WOOL BRICKS  Obtained by adding wool and natural polymer found in seaweed , to the clay of the brick.  37 % more strength than the burnt bricks  Resistant of cold and wet climate  They are dry hard and don’t need to be fired like other bricks.
  11. 11. SUSTAINABLE CONCRETE  Concrete is a friend of environment on all of its life stages: From raw material production to demolition.  Crushed glass, wooden chips or slag can be added to make it sustainable concrete.  reduces CO2 emission of the building.
  12. 12. SOLAR TILES  They spend a large portion of the day absorbing energy from the sun.  Not fixed on the top of the existing roofing like other solar units.
  13. 13.  Instead they are fully integrated into the building.  Protects from weather  As well as generates energy for the inhabitants.
  14. 14. PAPER INSULATION  Made from recycled newspapers and cardboard  Superior alternative to chemical foams
  15. 15.  Insect resistant and fire-retardant because of borax, boric acid and calcium carbonate( all natural materials )  Can be blown into cavity walls thus filling every cracks and creating an almost draft-free space.
  16. 16. TRIPLE GLAZED WINDOWS  Three layered glass windows  Fully insulated window frames-Do a better job of stopping heat from leaving the building
  17. 17. Krypton-is used as an insulator between the layers Low emissivity coatings to glass-prevents heat from escaping
  18. 18. MERITS AND DEMERITS OF SUSTAINABLE BUILDINGS MERITS  Efficient technologies  Easier maintenance  Improved indoor air quality  Energy and water efficient  Improved health  Water conservation DEMERITS  Initial cost is high  Availability of materials  Need more time for construction  Need more skilled labors

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