| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fired material which can be produced by using, as a raw material, a material to be treated containing contaminated soil, soil generated in construction or the like and can be used for lightweight aggregate, lightweight soil or the like. <P>SOLUTION: The fired material is obtained by firing a raw material satisfying following formulas (1): 0.75≥S/(S+A+F)≥0.45 and (2): 0.25≥A/(S+A+F)≥0.15. In the formulas (1) and (2), S is the mass ratio of Si expressed in terms of SiO<SB>2</SB>to the total amount of the raw material excluding an ignition loss, A is the mass ratio of Al expressed in terms of Al<SB>2</SB>O<SB>3</SB>to the total amount of the raw material excluding an ignition loss, and F is the mass ratio of a melting point lowering component expressed in terms of its oxide to the total amount of the raw material excluding an ignition loss (wherein, the mass ratio is expressed in terms of element simple substance only when the melting point lowering component is a halogen element). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
