THE EFFECT OF MIXING SEQUENCE ON UNCONFINED COMPRESSION STRENGTH OF CLAYSTONE-BENTONITE MIXTURES ON HIGH DENSITY
Abstract
Claystone is generally considered a material that has poor properties. This is because the shear strength is very low when interacting with water. However, it turns out that claystone can be used as a basic ingredient for making clay liners. In addition to permeability, claystone is mixed with bentonite to increase its cohesion. However, because both samples contain clay, each sample will absorb water and affect the shear strength. The purpose of this study was to analyze the effect of the steps of adding water on the shear strength of a mixture of claystone and bentonite compacted with different levels of bentonite at high density.
There are four combinations of claystone mixtures with different bentonite percentages namely 5, 10, 15 and 20% based on dry weight with a density above the Proctor standard (i.e. density of 1.8 gr/cm3). In mixing soil samples with water, the steps taken are (1) (claystone+water)+bentonite, and (2) (bentonite+water)+claystone. The mixture was compacted statically to form a test object with a diameter of 4.7 cm and a height of 9.45 cm. The sample was then tested for shear strength with the undrained compressive strength (UCT) test. The results were compared with other previously reported mixing methods (claystone+bentonite)+water.
From the analysis it was found that the shear strength of the samples prepared from all mixed methods at a density of 1.8 gr/cm3 met the requirements as a clay liner. The test results also show that the sample compacted by the (claystone+water)+bentonite method produces the highest shear strength. Considering these results, it is suggested that the sample mixing method is by stages (claystone+water)+bentonite.
Keywords: Bentonite, Claystone, Clay Liner, Compressive Strength, UCT
Full Text:
PDFReferences
Arifin, Y.F. and Kusworo, A.S.2020. Utilization of lightweight brick waste as soils stabilizing agent. In IOP Conference Series: Materials Science and Engineering, IOP Publishing, 980(1) : 012-071
Birgersson, M., Karnland, O. & Nilsson, U. 2010. Freezing of bentonite. Experimental studies and theoretical considerations.
Chai, Miura., 2002, Comparing the performance of landfill liner systems. J mater cycles waste manag, 4:135-142
EPA, 2000. Landfill Manuals: Landfill Site Design. Ireland: The Environmental Protection Agency, Ireland.
Falisa, Hendri, C. & Harnani. 2019. Studi Karakteristik Geokimia Batulempung Berdasarkan Analisa Scanning Electron Microscope (Sem) Dan Energy Dispersive X-Ray (Edx), Daerah Merapi Dan Sekitarnya Kabupaten Lahat, Sumatera Selatan. Prosiding Applicable Innovation of Engineering and Science Research : 1001-1004.
Hardiyatmo, H.C. and Widodo, P., 1992. Mekanika Tanah. Gramedia Pustaka Utama, Jakarta.
Hardiyatmo, H.C., 2002. Mekanika Tanah I. Yogyakarta.
Jembise, R.A., Sompie, O.B. and Jansen, F., 2014. Penambahan Campuran Bentonit Dan Kaolin Pada Tanah Pasir Terhadap Koefisien Permeabilitas Dengan Kondisi Plastisitas Berbeda Pada Tingkat Kepadatan Maksimum. Jurnal Ilmiah Media Engineering, 4(2).
Katti K. dan Katti D.. 2001. Effect of Clay-Water Interactions on Swelling in Montmorillonite Clay. Departemen of Civil Engineering and Construction North Dakota State University, Fargo.
Kusuma, R.I. dan Mina, E. 2015. Stabilisasi tanah lempung dengan menggunakan abu sawit terhadap nilai kuat tekan bebas, Fargo.
Liu, Z., Shao, J. 2016. Moisture Effects on Damage and Failure of Bure Claystone under Compression. Geotech. Lett., Vol.6, pp.182–186, doi:10.1680/jgele. 16.00054.
Liu, Z., Shao, J. Moisture Effects on Damage and Failure of Bure Claystone under Compression. Geotech. Lett., Vol.6, 2016, pp.182–186, doi:10.1680/jgele.16.00054.
Mina, E., Kusuma, R.I. and Ridwan, J.. 2017. Stabilisasi tanah lempung menggunakan pasir laut dan pengaruhnya terhadap nilai kuat tekan bebas (Studi Kasus: Jalan Mangkualam Kecamatan Cimanggu–Banten). Fondasi: Jurnal Teknik Sipil, 6(2).
Mochtar N.E. & Arifin, Y.F. 2000. Pengaruh Leachate Terhadap Hydraulic Conductivity dari Clay Liner, Lembaga Penelitian. Institut Teknologi Sepuluh November. Surabaya.
Noorsaly, S.R. 2018. Studi Pemanfaatan Fly Ash untuk Memperbaiki Karakteristik Deposit Claystone Sebagai Alternatif Bahan Tanah Timbunan (Studi Kasus Proyek Pembangunan TPA Regional Banjarbakula): Program sarjana Strata satu (S1) Teknik Sipil Universitas Lambung Mangkurat.
Pangestu, A. A. D.. 2019. Studi Penggunaan Campuran Claystone dan Bentonite Sebagai Lapisan Mineral pada TPA Regional Banjarbakula. Universitas Lambung Mangkurat.
Pettijohn, F.J. 1975. Sedimentary Rocks, 3rd ed., New York, 628h Harper&Row Publishing Co.
Ramadani, D. S. 2018. Kinerja Pengurangan Pb (II) pada lapisan semi-kedap komposit Bentonit dan Zeolit Studi Kasus: TPA Jatibaranga Kota Semarang (Doctoral dissertation, Universitas Diponegoro).
Romadhon, R. D. 2021. Pengaruh Urutan Penambahan Air Terhadap Compressive Strength Campuran Claystone-Bentonite yang Dipadatkan. Universitas Lambung Mangkurat.
Wen, X., Zeng, Z., Du, C., Huang, D., Zeng, G., Xiao, R., Lai, C., Xu, P., Zhang, C., Wan, J. and Hu, L., 2019. Immobilized laccase on Bentonite-derived mesoporous materials for removal of tetracycline. Chemosphere, 222 : 865- 871.
Wesley. L. D.. 2012. Mekanika Tanah, Untuk Tanah Endapan dan Residu , ANDI, Yogyakarta
DOI: https://doi.org/10.20527/crc.v6i5.13198
Refbacks
- There are currently no refbacks.
Copyright (c) 2024 Nada Salsabila, Yulian Firmana Arifin
This work is licensed under a Creative Commons Attribution 4.0 International License.
Indexed By:
GOOGLE SCHOLAR : Kutipan = 2, H-index = 1, i10-index = 0
