International Journal of Advance Engineering and Research Development (IJAERD) Volume 5, Issue 02, February-2018, e-ISSN: 2348 - 4470, print-ISSN: 2348-6406 9 8
CBR Value (%)
7 6 5 3Days Curing
4
7Days Curing
3
21Days Curing
2 1 0 0
10
20
30
Coal Dust (%)
Figure 3: Variation of CBR with percentage of Coal dust at different curing periods 9 8
CBR Value (%)
7 6 5% Coal Dust
5
10% Coal Dust
4
15% Coal Dust 3
20% Coal Dust
2
25% Coal Dust
1 0 0
5
10
15
20
25
Curing Period (days)
Figure 4: Variation of CBR with curing period at different percentages of Coal dust V.
CONCLUSIONS
1. The use of coal dust, the mine waste improves the properties of clay soil; coal dust can be used up to certain limit to improve the properties of soil. 2. The Unconfined compressive strength and CBR values increased due to curing.
@IJAERD-2018, All rights Reserved
388