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).
So, to recap, water moves through a cycle on Earth called the water cycle, sometimes referred to as the hydrologic cycle. The water cycle begins with surface water, which is represented by rivers, lakes, and oceans. Next it moves through evaporation, or the process by which water is converted from its liquid state to a gaseous state called water vapor.