Penggunaan Limbah Serat Sabut Kelapa yang Sudah Direndam NaOH Untuk Meningkatkan Kuat Tarik Lempung Lunak
Anita Widianti, Bramanda Fakhri Ramadhan, Aji Muntoha
Abstract
Lempung lunak adalah salah satu jenis tanah yang memiliki kuat tarik dan kuat dukung yang rendah. Limbah sabut kelapa merupakan salah satu material yang dapat dimanfaatkan untuk memperkuat tanah tersebut, karena seratnya memiliki kuat tarik yang tinggi. Untuk lebih meningkatkan kekuatan serat terdapat beberapa metode yang dapat diterapkan, diantaranya dengan merendam serat menggunakan cairan Natrium Hidroksida (NaOH) sebelum dicampurkan ke dalam tanah. Tujuan dari penelitian ini adalah membandingkan kekuatan tarik tanah yang dicampur serat sabut kelapa tanpa dan dengan direndam NaOH selama 1 jam. Kadar serat sabut kelapa yang digunakan bervariasi, yaitu sebanyak 0 persen, 0.4 persen, 0,6 persen, 0,8 persen, dan 1 persen dari berat tanah campuran. Konsentrasi NaOH yang digunakan sebesar 7,5 persen Permukaan serat sabut kelapa yang direndam dalam cairan NaOH akan menjadi lebih kasar, sehingga ikatan dengan tanah dapat meningkat. Uji yang dilakukan adalah uji kuat tarik belah dengan mengacu ASTM-D3967. Serat yang direndam dengan NaOH menghasilkan nilai kuat tarik campuran yang lebih tinggi dibandingkan dengan campuran yang menggunakan serat tanpa direndam NaOH. Nilai optimal diperoleh dari campuran tanah-serat 0,6 persen yang telah direndam NaOH, yaitu sebesar 31,09 kPa.
Keywords
Kuat Tarik; Lempung Lunak; NaOH; Serat Sabut Kelapa
References
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DOI: https://doi.org/10.24967/teksis.v10i1.3941
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Anita Widianti, Bramanda Fakhri Ramadhan, Aji MuntohaAbstract
Keywords
References
S. M. Hejazi, M. Sheikhzadeh, S. M. Abtahi, and A. Zadhoush, “A simple review of soil reinforcement by using natural and synthetic fibers,” Constr. Build. Mater., vol. 30, pp. 100–116, 2012, doi: 10.1016/j.conbuildmat.2011.11.045.
R. P. Munirwan, Munirwansyah, Marwan, P. J. Ramadhansyah, and V. Kamchoom, “Performance of Coir Fiber Addition for Clay as a Sub-Grade for Pavement Design,” IOP Conf. Ser. Mater. Sci. Eng., vol. 712, no. 1, 2020, doi: 10.1088/1757-899X/712/1/012009.
A. Widianti, A. A. B. Negara, T. S. Elmino, and L. Ramadhani, “Utilization Of Coir Fibers To Improve The Bearing Capacity And Tensile Strength Of Expansive Clay,” GEOMATE J., vol. 23, no. 95, pp. 20–26, 2022.
L. C. P. de Menezes, D. B. de Sousa, S. F. Sukar, and S. R. de M. Ferreira, “Analysis of the Physical-Mechanical Behavior of Clayey Sand Soil Improved with Coir Fiber,” Soils and Rocks, vol. 42, no. 1, pp. 31–42, 2019, doi: 10.28927/sr.421031.
A. Ahmad Lone, I & Bawa, “Utilization of fly-ash and coir fibre in soil reinforcement,” Int. J. Civ. Eng. Technol., vol. 9, no. 8, pp. 341–346, 2018.
M. A. Habe, “Efek Perendaman Serat Sabut Kelapa dalam Larutan Alkali Terhadap Daya Serap Serat Sabut Kelapa pada Matriks Poliester,” INTEK J. Penelit., vol. 3, no. 1, pp. 15–19, 2016.
F. Fahriani, “Analisis stabilitas tanah timbunan dengan perkuatan sabut kelapa,” vol. 4, 2016.
B. Koohestani, A. K. Darban, P. Mokhtari, E. Yilmaz, and E. Darezereshki, “Comparison of different natural fiber treatments: a literature review,” Int. J. Environ. Sci. Technol., vol. 16, no. 1, pp. 629–642, 2019.
S. Maurya , D. A. K. Sharma , D. P. K. Jain , and D. R. Kumar, “Review on Stabilization of Soil Using Coir Fiber,” Int. J. Eng. Res., vol. 4, no. 6, pp. 296–209, 2015, doi: 10.17950/ijer/v4s6/605.
P. Upadhyay and Y. Singh, “Soil Stabilization Using Naural Fiber Coir,” Int. Res. J. Eng. Technol., vol. 04, no. 12, pp. 1808–1812, 2017.
M. Arsyad, Y. Kondo, Arman, A. M. Anzarih, and N. Wahyuni, “Effect of sodium hydroxide concentration on the tensile strength of coconut fiber,” J. Phys. Conf. Ser., vol. 1341, no. 5, 2019, doi: 10.1088/1742-6596/1341/5/052001.
A. I. S. Brígida, V. M. A. Calado, L. R. B. Gonçalves, and M. A. Z. Coelho, “Effect of chemical treatments on properties of green coconut fiber,” Carbohydr. Polym., 2010, doi: 10.1016/j.carbpol.2009.10.005.
H. Gu, “Tensile behaviours of the coir fibre and related composites after NaOH treatment,” Mater. Des., vol. 30, no. 9, pp. 3931–3934, 2009.
S. Prasojo, S. M. B. Respati, and H. Purwanto, “Pengaruh Alkalisasi Terhadap Kompatibilitas Serat Sabut Kelapa (Cocos Nucifera) Dengan Matriks Polyester,” CENDEKIA EKSAKTA, vol. 2, no. 2, 2018.
N. Munirah Abdullah and I. Ahmad, “Effect of chemical treatment on mechanical and water-sorption properties coconut fiber-unsaturated polyester from recycled PET,” Int. Sch. Res. Not., vol. 2012, 2012.
B. Maryanti, A. Sonief, and S. Wahyudi, “Pengaruh Alkalisasi Komposit Serat Kelapa-Poliester Terhadap Kekuatan Tarik,” Rekayasa Mesin, 2011.
A. Karthikeyan and K. Balamurugan, “Effect of alkali treatment and fiber length on impact behavior of coir fiber reinforced epoxy composites,” J. Sci. Ind. Res., vol. 71, pp. 627–631, 2012.
M. A. Irfai, D. Wulandari, and E. Marsyahyo, “Effect OF NaOH Treatment on Bending Strength Of The Polyester Composite Reinforce By Sugar Palm Fibers,” in IOP Conference Series: Materials Science and Engineering, 2018, vol. 336, no. 1, p. 12008.
M. Sood and G. Dwivedi, “Effect of fiber treatment on flexural properties of natural fiber reinforced composites: A review,” Egypt. J. Pet., vol. 27, no. 4, pp. 775–783, 2018.
M. Rokbi, H. Osmani, A. Imad, and N. Benseddiq, “Effect of chemical treatment on flexure properties of natural fiber-reinforced polyester composite,” procedia Eng., vol. 10, pp. 2092–2097, 2011.
R. D. N. Bifel, E. U. K. Maliwemu, and D. G. H. Adoe, “Pengaruh Perlakuan Alkali Serat Sabut Kelapa terhadap Kekuatan Tarik Komposit Polyester,” LONTAR J. Tek. Mesin Undana, vol. 2, no. 1, pp. 61–68, 2015.
R. K. Dutta, V. N. Khatri, and V. Gayathri, “Effect of addition of treated coir fibres on the compression behaviour of clay,” Jordan J. Civ. Eng., vol. 159, no. 700, pp. 1–13, 2012.
V. N. Khatri, R. K. Dutta, G. Venkataraman, and R. Shrivastava, “Shear strength behaviour of clay reinforced with treated coir fibres,” Period. Polytech. Civ. Eng., vol. 60, no. 2, pp. 135–143, 2016.
V. N. Khatri, R. K. Dutta, and S. Katre, “Shear strength, bearing ratio and settlement behavior of clay reinforced with chemically treated coir fibres,” Jordan J. Civ. Eng., vol. 11, no. 4, 2017.
B. Ramesh, V. Gokulnath, and M. R. Kumar, “Detailed study on flexural strength of polypropylene fiber reinforced self-compacting concrete,” Mater. Today Proc., vol. 22, pp. 1054–1058, 2020.
A. Widianti, W. Diana, and M. R. Alghifari, “Shear Strength and Elastic Modulus Behavior of Coconut Fiber-Reinforced Expansive Soil,” in IOP Conference Series: Materials Science and Engineering, 2021, vol. 1144, no. 1, p. 12043.
B. M. . Das and K. Sobhan, Principles of Geotechnical Engineering. Boston, USA: Cengage Learning, 2016.
M. Arsyad, I. N. G. Wardana, Pratikto, and Y. S. Irawan, “The morphology of coconut fiber surface under chemical treatment,” Rev. Mater., 2015, doi: 10.1590/S1517-707620150001.0017.
A. International, ASTM-D3967: Standard Test Method for Splitting Tensile Strength of Intact Rock Core Specimens with Flat Loading Platens. Pennsylvania, USA, 2023.
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