Method for evaluating fire-damaged depth of concrete using pigment

摘要

The present invention relates to a method for determining the depth of fire damage in a concrete structure using a dye, focusing on the fact that the absorption capacity of concrete changes through a change in the structure due to a fire, immersing the concrete in the dye as an absorber, and based on the saturation of the core specimen The purpose of this is to determine the fire damage and its depth. The fire damage depth determination method of a concrete structure using a dye according to the present invention is to determine the fire damage depth using a change in the absorption rate of concrete due to the fire damage, and the first method of collecting a core specimen from a fire damaged concrete structure step; a second step of preparing a dye as a liquid absorbent material that the core specimen can absorb and immersing the core specimen collected in the first step in the dye for a predetermined time; and a third step of taking out the core specimen from the absorber after the second step and determining the depth of fire damage based on the difference in chroma.