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).
The hydrological cycle is a closed circulation of the water in its three phases inside the climatic system. It is a closed sequence of natural phenomena, in which the globe provides the atmosphere with water vapour, that afterwards returns in liquid or solid phases to the globe. The natural phenomena that make up the hydrological cycle are: a) the transfer of water, in its gaseous phase, from the globe to the atmosphere, by the evaporation of