건설재료시공학연구실

Building material & construction lab.

The marine concrete that located at the immersion zone recieves an hydrostatic pressure of 1 atm as depth of the water increased by 10m. and it could accelerate chloride ion penetration. In this study, to evaluate the influence of hydrostatic pressure on chloride ion penetration, concrete mixed by ordinary portland cement and Portland Blast-furnance slag cement was exposed to 1 and 6 at and substitute ocean water. As a result, the surface chloride ion concentration of the concrete under 6 atm of hydrostatic pressure increased rapidly and the water-soluble chloride ion contents was increased by depth. In addition, the concrete under 6 atm of hydrostatic pressure showed the increased of capillary pores corresponsing to 5-100nm.