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Shvoong Home>Science>Engineering>SEA WATER IN CIVIL CONSTRUCTION Summary

SEA WATER IN CIVIL CONSTRUCTION

Article Summary   by:rafatsu     Original Author: RAFAEL TRINDADE
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This abstract was translated from ÁGUA DO MAR NA CONSTRUÇÃO CIVIL
 
SEA WATER - A SOLUTION OR PROBLEM IN CIVIL CONSTRUCTIONThe sea water, in the context of the current shortage of drinking water
in some regions of the world, tends to become the most important
alternative source of water for human consumption in the activities.
The cost of desalination processes are decreasing in recent decades,
making possible its implementation in countries that suffer from the
lack of water. The building, in the future, could be benefited by this
process, provided that their cost to become viable for use in
industrial segment. A study published in the edition of July 14, 2006
of the magazine "Science" states that 1.75 billion people, already
facing severe shortages of drinking water on the planet. For severe
shortage of drinking water, it is understood, according to the UN, the
use of more than 40% of the net reserves available in a region for
consumption industrial, domestic and agricultural. The previous
estimate, the UN, estimated at half a billion the number of people
exposed to the current problem. Scientists estimate that in the year
2025 3.3 billion people have no more water for irrigation-a human
activity that consumes the most liquid. Also found that the local water
resources in some areas are simply exhausted. The areas most affected
are the arid regions of northern Africa, Central Asia and the Middle
East. The areas of intense urbanization recent as the south of the
northern United States and Mexico were also included in the new map of
scarcity. Joseph Galizia Tundisi, of the International Institute of
Ecology, in San Carlos (SP) said that the demand for dramatically
increasing worldwide: the big cities do not have sufficient water
resources to support the population growth. Given this scenario, the
construction can not continue using the same sources of water they
normally do. Currently talks about sustainable construction, aiming to
encourage the development of projects and new technologies that
provide, among others, the rational use of natural resources such as
energy and water. Of course, the sea water is a problem in construction
as a result of corrosion and oxidation of material present in coastal
buildings and buildings submerged, but this fact has been amended over
time, even when that is exhausted the usual sources of consumption of
water by society. It could, for example, be used in construction, as
soon as she responds to the standards of cost, consumption and quality
that this segment industrial demands. The processes of desalination of
sea water, although still expensive, may in the future become the best
alternative to solving the shortage of drinking water and, by
extension, the water used in industry and civil irrigation, which is
the human activity it consumes more water. One example is the program
of desalination of sea water in Ceara deployed with the aim of
supplying the population in the future. A curious application of sea
water is the project that aims to solve the problem of the sinking city
of Venice, through injections of sea water underground. Although there
many objections to this project, it does not cease to be an interesting
and innovative application of this natural resource. Therefore, the sea
water is great opportunity to exit the role of "malevolent" to that of
"heroin" of the building, opening a new horizon for solutions to this
professional branch that has impact on society and the environment.
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