This paper presents an analysis of a normal weight concrete of 45 MPa (NC 35/45) and marine durable concrete of 45 MPa (MC 35/45) compressive strength were cast and tested. This paper presents both properties of the (NC 35/45) and (MC 35/45) concretes of initial curing and subsequent exposure to humid (water tank and seaside) conditions for a period of 3 months. The chloride and sulphate concentrations in the two concretes are reported. It is concluded that the extent and amount of both chloride and sulphates in those two types of concretes can be considerably different due to condition ambient. Sulphate and chloride concentration in (MC 35/45) was only marginally higher than that in (NC 35/45). Overall, it is concluded that properly designed concretes of adequate strength and designed with water cement ratio lower than 0.40 are durable against chloride and sulphate penetration in severe humid exposure conditions.