| 摘要 |
A granite boundary stone is provided to have physical and chemical properties of granite, to cut down the cost of production economically and to have an environment-friendly effect by recycling granite. A granite boundary stone comprises a rectangular parallelepiped body(10) made of granite, an upper granite surface plate(22) attached in the longitudinal direction of the side of the body, and a lateral granite surface plate(24) attached in the longitudinal direction of the side of the body, wherein the body, the upper granite surface plate and the lateral granite surface plate are attached by adhesives manufactured with 100 weight percent acryl based binder and 5~10 weight percent coupling agent, and the acryl based binder is manufactured by mixing a main material composed of 50~70 weight percent acryl urethane resins and 30~50 weight percent butyl acetone with a hardener composed of 50~60 weight percent isocyanate and 40~50 weight percent butyl acetone in a weight ratio of 5 to 1 or 4 to 1. |
