Effect of the Time on the Undrained Shear Strength and Permeability of Clay-Wooden Sawdust Mixtures Used to Improve Landfills Liner

Abstract:

This study aims to assess the impact of time on sawdust usage to enhance the behavior of the clay used in landfills. The soil used in this paper was brought from Büyükçekmece region / Istanbul. Four proportions (1, 2, 3 and 5) of the sawdust were added as a percentage of the dry weight of the soil. Soil-sawdust mixtures were compacted with the optimum water content corresponding to each percentage and samples were extracted. The extracted samples were divided into two groups, the immediate tests were performed on the first group while the second group was kept in special containers for long-term tests after 90 days. A series of undrained unconsolidated triaxial tests (UU) and unconfined compression tests (UCS) were performed on the specimens and compared with the row soil, in the immediate tests, the results from the UU triaxial test showed that the undrained shear strength was increased as the sawdust content increased and then decreased, it was conducted that the optimum sawdust content was 3%, it was increased the undrained shear strength by (39.5%) and (41.44%) for UU triaxial and Unconfined compression tests respectively. After 90 days of the curing period, it found that 2% is the optimum sawdust content, it was increased the undrained shear strength by (202.51%) and (176.64%) for UU triaxial and unconfined compression test respectively. In the immediate and long-term tests, the coefficient of permeability increased by (66.66) and (94.44%) as the sawdust increased from 0 to 5 % respectively. Sawdust increases the hydraulic conductivity of the clay. It can be concluded that the sawdust usage has a remarkable effect on the shear strength of the clay for both immediate and long-term tests.

• Periodical: Key Engineering Materials (Volume 857)
• Pages: 311-318
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.857.311
• Online since: August 2020
• Authors: Omar Hamdi Jasim*, Doğan Çetin
• Keywords: Disposal, Fiber, Landfill, Permeability, Sawdust, Triaxial Test, Unconfined Test, Waste Materials

References

[1] M.H. Maher and Y.C. Ho, Mechanical properties of kaolinite/fiber soil composite, Journal of Geotechnical Engineering, 120(8) 1994 1381-1393.

DOI: 10.1061/(asce)0733-9410(1994)120:8(1381)

[2] S.M. Marandi, M.H. Bagheripour, R. Rahgozar, and H. Zara, Strength and ductility of randomly distributed palm fiber reinforced silty-sand soils, American Journal of Applied Science, 5(3) 2008 209-220.

DOI: 10.3844/ajassp.2008.209.220

[3] J. Prabakar and R.S. Sridhar, Effect of random inclusion of sisal fibre on strength behavior of soil, Construction and Building Materials, 16(2) 2002 123-131.

DOI: 10.1016/s0950-0618(02)00008-9

[4] T. Maliakal and S. Thiyyakkandi, Influence of randomly distributed coir fibers on shear strength of clay, Geotechnical and Geological Engineering, 31(2) 2013 425-433.

DOI: 10.1007/s10706-012-9595-1

[5] A. Chegenizadeh, H. Nikraz, Performance of fiber reinforced clayey sand composite, Frontiers of Structural and Civil Engineering, 6(2) 2012 147-152.

DOI: 10.1007/s11709-012-0158-6

[6] L. Gao, G. Hu, N. Xu, J. Fu, C. Xiang, and C. Yang, Experimental study on unconfined compressive strength of basalt fiber reinforced clay soil, Advances in Materials Science and Engineering, (2015).

DOI: 10.1155/2015/561293

[7] C.S. Tang, B. Shi, and L.Z. Zhao, Interfacial shear strength of fiber reinforced soil, Geotextiles and Geomembranes. 28(1) 2010 54-62.

DOI: 10.1016/j.geotexmem.2009.10.001

[8] S.K. Patel, and B. Singh, Shear strength and deformation behaviour of glass fibre-reinforced cohesive soil with varying dry unit weight, Indian Geotechnical Journal, 49(3) 2019 241-254.

DOI: 10.1007/s40098-018-0323-5

[9] F. Changizi, A. Haddad, Strength properties of soft clay treated with mixture of nano-SiO2 and recycled polyester fiber, Journal of Rock Mechanics and Geotechnical Engineering, 7(4) 2015 367-378.

DOI: 10.1016/j.jrmge.2015.03.013

[10] B. Soundara, Effect of fibers on properties of clay, International Journal of Engineering and Applied Sciences, 2(5) (2015).

[11] Y. Bulut, Z. Tez, Removal of heavy metals from aqueous solution by sawdust adsorption, J. Environ. Sci., 19 (2007), pp.160-166.

DOI: 10.1016/s1001-0742(07)60026-6

[12] T.K. Naiya, P. Chowdhury, A.K. Bhattacharya, and S.K. Das, Sawdust and neem bark as low-cost natural biosorbent for adsorptive removal of Zn (II) and Cd (II) ions from aqueous solutions, Chem. Eng. J., (148) 2009 68-79.

DOI: 10.1016/j.cej.2008.08.002

[13] O.H. Jasim, The effect of the usage of sawdust and quicklime on shear strength behaviour of clayey silt soil, (2016), (Master Thesis).

[14] N. Hamdi, E. Srasra, Hydraulic conductivity study of compacted clay soils used as landfill liners for an acidic waste, Waste Manage. (33), (2013), pp.60-66.

DOI: 10.1016/j.wasman.2012.08.012

[15] I.I. Akinwumi, O.O. Ojuri, D. Edem, and A.S. Ogbiye, Sawdust stabilization of lateritic clay as a landfill liner to retain heavy metals, In Geo-Chicago, (2016) 478-487.

DOI: 10.1061/9780784480144.047

[16] O.H. Jasim, D. Çetin, Effect of Sawdust Usage on The Shear Strength Behavior of Clayey Silt Soil, Sigma 34(1) 2016 31-41.

[17] I.I. Akinwumi, O.O. Ojuri, A.S. Ogbyie, and C.A. Booth, Engineering properties of tropical clay and bentonite modified with sawdust, Acta Geotechnica Slovenica. 14(2) 2017 47-56.

[18] S. Johnson and B. Gopinath, A study on the swell behaviour of expansive clays reinforced with saw dust, Coir Pith & Marble Dust IJERT, (5) 2016 565-570.

DOI: 10.17577/ijertv5is090512

[19] J.R. Booker, R.M. Quigley, R.K. Rowe, Clayey Barrier Systems for Waste Disposal Facilities, CRC Press (1997).

DOI: 10.1201/9781482271928

[20] O.A. Fadele and O. Ata, Water absorption properties of sawdust lignin stabilized compressed laterite brick, case studies in construction materials, (9) 2018 e00187.

DOI: 10.1016/j.cscm.2018.e00187