| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a recycled ground material that effectively recycles muddy soil of red clay and coal ash, simultaneously reduces many kinds of harmful substances contained in waste, clears strength as roadbed material and back-filling material and standard values concerning environmental performance, is useful as a back-filling material even in an area having a high ground water level and possibility of liquefaction, is safe and has high reliability. <P>SOLUTION: The method for producing a recycled ground material includes carrying out a wet sieve treatment of red clay muddy soil for water flow screening with a sieve mesh of size of 2 mm, removing sand gravel particles having particle diameters of≥20 mm, producing coarse grain soil of red clay, mixing the coarse grain soil of red clay with 1-25 wt.% of ordinary portland cement, 1-15 wt.% of blast furnace slag fine powder and 30-50 wt.% of fly ash of coal ash, adding water to the mixture to make a water-solid weight ratio of 20-23% and performing granulation treatment. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
