El-Watan

Promoting Democracy in Algeria

Maintenance

According to Heloisa Amorim of Medeiros (1) one of the characteristics most interesting it is the question of the maintenance, therefore she is necessary to fix tubings, for example, is enough to remove the blocks and later recolocar them, without if it notices that it had intervention. Mayo clinic brings even more insight to the discussion. They do not leave patches. Without speaking of its good adaptation to the topography of lands, safe from trincas, descolamentos and fictions. As Piorotti (1985) (2), the useful life of a floor can arrive the 25 years, depending on the sub-base projects and since that the blocks well are seated. As consequence, it is gotten pisos with excellent finishing, economic and with high durability. Another important data are that the intertravados blocks constitute permeveis pisos, what contributes excessively for one better pluvial water draining in the urban centers. In accordance with the Interpavi company, manufacturer of intertravados blocks, amongst the properties of the concrete blocks, is distinguished the high resistncias to the compression, the abrasion and the action of aggressive agents. Derivatives of oil do not react chemically provoking the deterioration of the floor, as it occurs with the asphalt floors.

For these reasons, many city halls have stimulated and invested in this type of pavement. As Sjstrm (3) (1996 apud JOHN, 2000), the civil construction consumes enters 14% 50% of the natural resources that are extracted of the planet. However, the use of residues as raw material in the civil construction can come to reduce the amount of removed natural resources of the environment. The residues will be able to a large extent to become a great auxiliador in the production of alternative materials of lesser cost, substituting the used natural aggregates in concrete, argamassas, blocks, barriers of containment, bases for pavement, etc. In parallel way to the development it concrete contend residues, know that, the amount of residue in the production of the steel are immense, mainly in our region with two great Siderurgical ones.

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