| 摘要 |
<p>PURPOSE:To provide an artificial stone lightweight and excellent in mechanical strength and also to contrive utilization of industrial waste by molding the mixture of fine aggregate incorporating lightweight aggregate and fine powder of fiber reinforced plastic, cement and water and thereafter performing underwater curing and high-temperature curing. CONSTITUTION:Cement is mixed with fine aggregate incorporating at least both of lightweight aggregate such as pumiceous sand balloon and fine powder of fiber reinforced plastic. Then, prescribed amount of water is added to this mixture and introduced into a frame mold. The molded body is released fro the frame mold and then cured. Thereafter it is heated to perform high- temperature curing and thereby the aimed lightweight artificial stone is obtained. This artificial stone is constituted of cement and fine aggregate. Fine aggregate incorporates at least both lightweight aggregate such as pumiceous sand balloon and fine powder of fiber reinforced plastic and has the following physical properties. In other words, the artificial stone has mechanical properties of 0.6-1.0g/cm<3> bulk density, >=27kg/cm<2> flexural strength and >=140kg/cm<2> compression strength and holds durability of 30 times or more for freezing and thawing.</p> |
