| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a guiding trimming block which allows a guiding block (yellow block) to be recognized easily for a long period even when color change and wear occur due to aging, by increasing an initial brightness ratio of the guiding block and a guiding trimming block (black block), and to provide a production method thereof.SOLUTION: Provided is a guiding trimming block formed of concrete, in which the concrete includes water, cement, copper slag aggregate and black pigment, and a ratio of water/cement in the concrete is 20-35%. The guiding trimming block is produced by putting the concrete in a mold for molding, and after removal from the mold, the concrete is cured.</p> |
