| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a block which is friendly to a global environment, and has compressive strength of 10 MPa or more by a technology which uses a large amount of fly ash as unused resources and can be started as business with a small capital. <P>SOLUTION: A fly ash block is characterized by containing at least one of portland cement and blended cement of 0-40 pts.wt., at least one of hydrated lime and quicklime of 1-30 pts.wt., and at least one of sulfate of alkali metal or alkaline earth metal, and hydroxide of alkali metal of 1 or more pts.wt. with respect to the fly ash, as main raw material, of 100 pts.wt. <P>COPYRIGHT: (C)2012,JPO&INPIT |
