Journal
| Title | COMPACTION CHARACTERISTICS OF A FINE-GRAINED SOIL POTENTIAL FOR LANDFILL LINER APPLICATION Posted by Jonathan Tiongson |
| Authors | Jonathan M. Tiongson and Mary Ann Q. Adajar |
| Publication date | 2020/07 |
| Journal | Geotechnique, Construction Materials and Environment |
| Volume | 19 |
| Issue | 71 |
| Pages | 211 - 218 |
| Publisher | International Journal of GEOMATE |
| Abstract | Increasing population growth and urbanization results in increased demand for waste disposal processes and facilities that can protect public health and the environment. In the Philippines, there is a great demand to construct sanitary landfills (SLF) with only 387 local government units (LGUs) or equivalent to 23.86% compliant to date with Republic Act 9003 which mandates all LGUs to use the sanitary landfill. The compaction characteristics of a locally abundant fine-grained soil at different compaction energy levels were investigated as part of a broader study in the suitability of the soil as a landfill liner material. Compaction is essential in the preparation of a well-compacted soil liner in a sanitary landfill to avoid or minimize the migration of leachate and thereby reduce the risk of groundwater pollution. The physical properties are determined through a series of laboratory tests which covers the grain-size distribution, specific gravity, Atterberg limits, soil classification, X-ray powder diffraction (XRD) and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS). Correlations to estimate the compaction characteristics at any rational compaction energy (E) are developed. The maximum dry unit weight values at different compactive efforts were used to determine void ratios which were then utilized to compute for the saturated hydraulic conductivity (k) using numerical model for hydraulic conductivity for the same soil type. The resulting hydraulic conductivity ranges from 2.30 x 10-7 to 1.20 x 10-7 cm/sec well above the required value in the Philippines as per RA 9003 for the intended Category I and II SLFs application. |
| Index terms / Keywords | Compaction, Compaction Energy, Landfill Liner, Sanitary Landfill |
| DOI | DOI: https://doi.org/10.21660/2020.71.37070 |
| URL | https://www.geomatejournal.com/sites/default/files/articles/211-218-37070-Jonathan-July-2020-71.pdf |