Use Of Fly Ash in Construction Purposes, Its Advantages and Disadvantages

One of the residues generated by the process of coal combustion is fly ash, which can be used for the purpose of manufacturing of fly ash construction bricks of various sizes and dimensions. Different types of manufacturing processes used in construction of fly ash bricks for constructional purposes are discusses below.

How fly ash bricks are manufactured using different types of Manufacturing Processes?

For the purpose of manufacturing of construction fly ash brick, the equal amount of clay is added with fly ash. The mixture of equal amount of clay and fly ash is effectively fired in a kiln at an extremely high temperature of 1000 degree centigrade.

Based on the needs and requirements, the manufacturers can effective reduced or increase the amount of clay in this type or manufacturing of construction fly ash bricks.  Another popular method of production of construction fly ash bricks are by effectively mixing the soil, plaster of Paris, water and fly ash, which is allowed to dry by itself.  Besides being economical, this procedure of production of fly ash brick for construction is free from heat and hence results in no air pollution. High pressure technique with greater proportion of fly ash is used for the purpose of bulk production of construction fly bricks in more modern manufacturing processes.

One of the major advantages of using brick made from fly ash for constructional purposes is that it’s manufacturing costs 20 % less than traditional clay bricks of same sizes and dimensions. Other advantages of construction fly ash brick are that these bricks are known for their excellent fire insulation capacity. In addition to this, the construction bricks manufacturing processes are known for causing less mercury pollution.

The construction fly ash brick is known for no or minimum breakage during the transportation and use. Besides this, the construction fly ash brick is known for its ability to withstand high mechanical stress. The mortar required for joints and plaster is effectively reduced by 50 %, due to uniform size of the construction fly ash bricks. The seepage of water through the bricks is considerably reduced owing to the low water penetration of the fly ash bricks in various construction applications.

Advantages Associated With Fly Ash Bricks for Construction Purposes

One of the major advantages of using fly ash bricks over the traditional clay bricks is that gypsum plaster can be effectively and directly applied without a backing coat of lime plaster. Only sprinkling of water before use is required as compared to traditional clay bricks that often require soaking in water for twenty four hours.

What are different Disadvantages of Using Fly Ash Brick for Construction Purposes?

The fly ash bricks manufactured by using Fly Ash Brick Machine, is known for their weak mechanical strength.  With the addition of marble waste or even mortar between the fly ash blocks or bricks, the problem of weak mechanical strength can be effectively rectified.

Limitation of size is another problem associated with fly ash brick manufactured by using ultra-modern Fly Ash Brick Making Machine. Large size of the fly ash bricks will have more breakage and hence highly uneconomical in nature.

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