| 摘要 |
PROBLEM TO BE SOLVED: To provide the production method of slag crushed stone, by which the dust preventing measure in the transportation and the mixing is dispensed with, the blending of carbon-containing waste for preventing the solidification is unnecessary, and the crushed stone having small coefficient of expansion is obtained by uniformizing the water content during aging. SOLUTION: In the production of the slag crushed stone by adding coal ash to steel slag or molten iron pre-treatment slag and carrying out aging, coal ash in which water content is previously controlled to 10-30% is used. As a result, the dust preventing measure in the transportation and the mixing is dispensed with. Further the aging is accelerated by keeping the water content in the coal ash to 10-30% during the steam aging to obtain the slag crushed stone having small coefficient of expansion. COPYRIGHT: (C)2006,JPO&NCIPI
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