METHOD FOR EVALUATING FROST DAMAGE RESISTANCE OF STONE

摘要

PROBLEM TO BE SOLVED: To quickly and securely judge the presence or absence of a possibility of the generation of a frost damage in a method for evaluating the frost damage resistance of stone used for the exterior finish or the like of a building.;SOLUTION: The lower end of a dried test piece made of stone is dipped into water, water absorption rates after time T1, T2,..., Tn are measured, a water absorption rate x2 that is the change value of the water absorption rate is obtained from the water absorption rates, and the presence or absence of a possibility of the generation of a frost damage of the test piece is judged according to whether the obtained water absorption rate x2 and a water absorption rate x1 after the time Tn are included in a frost damage generation region that is obtained from the water absorption rate x1 and the water absorption rate x2 after the time Tn of a plurality of stones where the presence or absence of the frost damage has been verified in advance.;COPYRIGHT: (C)2000,JPO