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High salinity in cement means that by the time the composite material is formed i.e CONCRETE, the rate of degradation of a reinforced concrete structure would be faster and can affect the structural stability of a structure,these can also lead to the reduction of bond mechanism between concrete and steel reinforcement .
Abrupt hydration, may result premature drying of concrete after placement which could be a cause for crack.
The pressure method for determining air content of fresh concrete by boyle's law as volume is inversely proportional to pressure.
a change in barometric pressure occurs at the sea level increase or decrease results in changes in properties of concrete
