Page 182 - 營建產業循環經濟發展研討會-論文集

Improvement of IBA after metals removal
Sato and Fujikawa, Fukuoka U
Aging method
120
Dense
Compaction degree 90%
Compaction degree 95%
Rain
CO2 CO 2
90 cm
100
80
60
40
20
0
93.0 69.0
63.0
90.0
85.0
Cover soil: 4cm
Upper layer:30cm Middle layer:30cm Under layer:30cm
IBA
Sampling area
CBR results (%)
56.0 Quality standard for base course : over 80%
Surface part of final disposal site
Quality standard for sub base course: over 30%
0 30 90 365 Aging day (day)
CBR test results (T-city)
Dense type mound
Until 90 day, CBR value of IBA in the compaction degree 95% > 80% After 90 day, CBR value of IBA in the compaction degree 95% < 80%
The CBR values are greater than the standard value for a sub-base course material (30%), IBA can be reused as a sub-base course material irrespective of the number of aging days.
43.0
78.0