1.3-POLYMER FIBER REINFORCED CONCRETE:-Civil structures made of steel reinforced concrete normally suffer from corrosion of the steel by the salt, which results in the failure of those structures. Constant maintenance and repairing is needed to enhance the life cycle of those civil structures.
The water cycle, air pressure, and weather are actually very closely related. The water cycle is the process of water being drawn up from the ground into the sky, where air pressure is lower. (Pressure gets lower as altitude increases, since there is less air available to press down).
âWater is always cycling around, through and above the Earth. This is called the natural water cycle â the continuous movement of water between the land, ocean, rivers and creeks and atmosphere. As water moves through the cycle, it changes state from liquid (rainwater, seawater) to gas (water vapour) and back to liquid.Liquid can also freeze and become solid (ice or snow).Water is always cycling around, through and above the Earth. This is called the natural water cycle â the continuous movement of water between the land, ocean, rivers and creeks and atmosphere. As water moves through the cycle, it changes state from liquid (rainwater, seawater) to gas (water vapour) and back to liquid.