Models of compacted fine-grained soils used as mineral liner for solid waste |
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Authors: | Osman Sivrikaya |
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Institution: | (1) Geotechnical Engineering Division, Civil Engineering Department, Niğde University, 51245 Niğde, Turkey |
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Abstract: | To prevent the leakage of pollutant liquids into groundwater and sublayers, the compacted fine-grained soils are commonly
utilized as mineral liners or a sealing system constructed under municipal solid waste and other containment hazardous materials.
This study presents the correlation equations of the compaction parameters required for construction of a mineral liner system.
The determination of the characteristic compaction parameters, maximum dry unit weight (γ
dmax) and optimum water content (w
opt) requires considerable time and great effort. In this study, empirical models are described and examined to find which of
the index properties correlate well with the compaction characteristics for estimating γ
dmax and w
opt of fine-grained soils at the standard compactive effort. The compaction data are correlated with different combinations of
gravel content (G), sand content (S), fine-grained content (FC = clay + silt), plasticity index (I
p), liquid limit (w
L) and plastic limit (w
P) by performing multilinear regression (MLR) analyses. The obtained correlations with statistical parameters are presented
and compared with the previous studies. It is found that the maximum dry unit weight and optimum water content have a considerably
good correlation with plastic limit in comparison with liquid limit and plasticity index. |
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Keywords: | Mineral liner Compaction Fine-grained soils Correlations |
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