| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lightweight mortar or concrete whose raw material is an unfired and granulated solid matter manufactured by a reaction (hydrothermal solidifying reaction) wherein a mixture of a PS (paper sludge) incineration ash added with a small amount of a solidifying material (cement, quick lime or the like) and water is stirred in a mixer, granulated and cured in an autoclave at a high temperature and high pressure, for reducing the treating cost for PS incineration ash through its effective utilization. <P>SOLUTION: A granular formed body is prepared by adding water and/or warm water, quicklime and cement to the paper sludge incineration ash and mixing in the temperature range of a normal temperature to 98°C, followed by granulating, and is cured. A solid matter manufactured by a reaction (hydrothermal solidifying reaction) of the granular body at a high temperature and high pressure is conditioned to be a surface-drying state as artificial lightweight aggregate, is mixed with natural sand and cement in a mixer and then is kneaded with water in the mixer and, as a result, lightweight and strong mortar or concrete is manufactured. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
