| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a neutralization depth measuring method and a neutralization determining method which can be realized by an extremely simple method without using an exclusive measuring implement after suppressing a drilling depth by a concrete drill even while drilling a concrete surface using it. <P>SOLUTION: On a concrete surface 23, a measuring recess 30 in an inverted conical shape is drilled (S2). After spraying distilled water using an atomizer or the like, the measuring recess 30 is washed to wash off concrete powder (S3), and moisture is removed from there (S4). A neutralization determining reagent is sprayed to the concrete surface inside the measuring recess 30 using an atomizer (S5), and a boundary of a neutralized layer 21 and a non-neutralized layer 22 is discolored and exposed visibly with the naked eye. After the discoloration, the value of the entire diameter d1 of the measuring recess 30 and the value of a non-neutralized area diameter d2 are measured using a general length measuring device such as vernier calipers or a ruler (S6). <P>COPYRIGHT: (C)2012,JPO&INPIT |
