earticle

영어

Salt injury and carbonation which is the a blazing primary factor decreasing durability of concrete is fatally based on prior performance lowering of concrete structure, structure stability, and reduction of serviceability limit period. Especially, in the event that chloride is penetrated and spreaded to reinforced concrete structure, salt injury becomes primary factor lowering of durability performance such as crack and popout of concrete due to iron expansion.
In this study, after durability improvement agent which strengthens carbonation and salt damage resistance is added to concrete as much as 0.0, 0.3, and 1.0% , engineering properties such as slump flow, air content, and setting time & durability such as compressive strength, cracking state, and chlorine diffusion factor in the watertight concrete are measured. As a result,
although durability improvement agent is not effect on engineering properties, it is make sure that durability improvement agent is effective to improve durability because of reduction of carbonation, cracking and diffusion factor of chloride