The Role of Environmental Impact in Building Material’s Selection презентация

and Muna Hanim Abdul Samadb
 
a&b School of Housing, Building and Planning,
University of Science Malaysia, Penang, Malaysia

on Ecological Degradation
Building Materials Impacts on Energy Consumption
Results and Discussion
Conclusions

manufacture building materials and products.
The building industry is the second largest consumer of raw materials, after the food industry.

1.Introduction

consumption patterns.

World consumption cartogram

the environmental load caused by humanity.

life cycle, in order to reduce the environmental problems related with building materials during selection process.

are airborne solid and liquid particles and gases that can pose risks to the environment and human health.”

manufacture, transport, construction, and maintenance
Manufacturing processes, mining and crushing of materials

system
damage to the developmental
damage to the respiratory
neurological problems in humans and other species

industrial and fuel emissions become trapped at ground level and are transformed after reacting with sunlight”

Beijing China air on a day after rain (left) and a sunny but smoggy day (right) August 2005.
Photo taken by Bobak Ha'Eri

used on maintenance

negative effects on the health of people and other biotic communities

by-products of manufacturing processes
fossil-fuel combustion
from the direct environmental application of toxic pesticides.

from the manufacturing process
substances resulting from the using process
disposing of plastics, metals, metal finishes, solvents, and adhesives.

ecological degradation resulting from the two ways of the interaction;
As the source materials resources and
As a sink for emissions As by-products of manufacturing processes .

as heat and is absorbed and trapped by greenhouse effect reduces heat loss to space, resulting in warmer temperatures on earth.

power vehicle and power generating plants, and as raw material for production of synthetic polymers

chlorofluorocarbons (CFCs; used as a propellant in manufacturing and refrigerant) and Halons (used in fire suppression systems), can cause a thinning of the Ozone layer, resulting in more shortwave radiation on Earth.
This has a number of potentially negative consequences, such as impacts on plants and agriculture, and increases in cancer and cataracts in people

primarily sulphur and nitrogen compounds, ether dissolve in water or adhere to solid particles.

limestone, concrete, and metals. It may even cause some stainless steel to stain. This can cause premature removal and replace of some building materials

phosphorus, in soil or water resulting in over-stimulation of plant growth.”

area of forest over the world. Only 36% of the world’s primary forests remain as of 2005

removal of forests, contributes to negative environmental impacts such as

are harvested for fuel
Lumber For building materials

Deforestation occurs when forested land is cleared for

mining and harvesting of materials for the manufacture of building materials.
Habitat alteration also can occur as a result of air, water, and land releases from industrial processes that change environmental conditions

habitats, and air, water, and soil pollution have all contributed to the loss of biodiversity over the past few centuries.
Biodiversity controls the spread of diseases, provides food and drugs for humans, and provides resources for industrial materials such as fibre, dyes, resins, gums, adhesives, rubber, and oils

that are released into water bodies reduce water resources through pollution.
In addition, the use of impervious surfaces (such as concrete and asphalt) seriously reduces groundwater recharge

building material are the degree to which the material consumed energy.
The industrial sector is the largest end user of energy, greater ever than the transportation sector or building operation

consumption (PEC) is the energy needed to manufacture the building product.”

energy within the following aspects:
Energy consumption for the transport of manufactured products.
Energy consumption on the building site.
Energy consumption during maintenance
Energy consumption of dismantling or removal of materials during demolition

to power vehicles used in
extraction
transportation
construction
maintenance

to power vehicles used in
extraction
transportation
construction
maintenance

cycle

look at the entire life cycle of building material, then answer:
How is the product mining or harvested, manufactured, and transported?
Is it produced at the factory in another country?
Does that factory release pollution into the environment?
What is the product made of?
Does it contain recycled content or renewable materials?
How much water consumption does it take to create the product?
And, overall, is the material biodegradable or recyclable when use it in the building?

selected building materials should:

Provide resource savings
Provide energy savings
Reduce wastes (be reusable and easily recyclable).
Not be harmful for human health
Provide comfortable and suitable conditions for human health within the covered areas.