COMPARITIVE REVIEW ON FLY-ASH BRICKS AND NORMAL CLAY BRICKS ON THE BASIS OF ENVIRONMENTAL ASSESS
ASHUTOSH
CIVIL ENGINEERING DEPARTMENT VAUGH INSTITUTE OF AGRICULTURE ENGINEERING AND TECHNOLOGY, SHUATS, PRAYAGRAJ , IN
Y.K. KUSHWAHA
CIVIL ENGINEERING DEPARTMENT VAUGH INSTITUTE OF AGRICULTURE ENGINEERING AND TECHNOLOGY, SHUATS, PRAYAGRAJ , IN
Keywords: Fly-ash bricks, land degradation, soil fertility, soil erosion
Abstract
Earlier bricks were constructed using mud or clay-bearing earth and dried in sunlight in order to harden it. As time passed by no more drying of bricks in sunlight was performed but a replacement i.e. kiln came into use. Kilns consuming coal, saw dust were used to dry bricks. This process of manufacturing results in large amount of carbon emissions and depletion of top soil rich in fertility. Some of the major pollutants released in the manufacturing process of clay bricks are carbon dioxide, carbon monoxide, nitrogen oxide, fluorides and particulate matters etc. The size of particulate matters is less than 10 microns and complex in mixture of different organic and inorganic substances which are harmful to human health. Dust released is in large quantity. The land where brick kilns are constructed gets degraded and abandoned afterwards. Soil rich in fertility is lost. The area covered for brick is large. In case of fly-ash bricks, the main ingredient i.e. fly-ash is one of the naturally occurring by products from the coal combustion process and is nearly same as volcanic ash. As fly-ash itself is a waste, the use of waste product for some meaning purpose helps in waste management. Dumping land area gets reduced; pollution is checked and thus is ecofriendly. To avoid environmental threats brick made of industrial waste that is fly-ash from the waste as a residue from the different industries and factories, this types of bricks is termed as fly ash bricks which is composed by the different materials such as lime, In this report author will focus on the replacement of fly ash bricks in place of clay bricks as construction material focusing on environmental aspects.
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