| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a pre-mix heavy weight aggregate of stable quality obtained by pre-mixing heavy weight coarse aggregate and heavy weight fine aggregate, in which the maldistribution between the heavy weight coarse aggregate and the heavy weight fine aggregate during mixing, conveying and storing is prevented. <P>SOLUTION: Disclosed is a pre-mix heavy weight aggregate composed of: a heavy weight fine aggregate which comprises at least one selected from FeO, Fe<SB>2</SB>O<SB>3</SB>, metal iron, copper slag and ferronickel slag as the main constituting component(s); and heavy weight coarse aggregate which comprises at least one selected from iron ore, baryte, electric furnace oxidizing slag and metal dust melted slag as the main constituting component, and in which the volume ratio of the heavy weight fine aggregate in the heavy weight aggregate is 0.7 to 0.9. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
