RELATIONSHIP OF AREA RATIO TO DISPLACEMENT ON SUBGRADE STABILIZED BY DEEP SOIL MIXING

Dara Ayu Lisna Hadi; Yulvi Zaika; As'ad Munawir

doi:10.21776/ub.rekayasasipil.2022.016.02.6

Authors

Dara Ayu Lisna Hadi Universitas Brawijaya
Yulvi Zaika Universitas Brawijaya
As'ad Munawir Universitas Brawijaya

DOI:

https://doi.org/10.21776/ub.rekayasasipil.2022.016.02.6

Keywords:

area ratio, consolidation, finite element method, deep soil mixing, settlement, soil improvement, expansive soil

Abstract

Expansive clay soil has high potential of swelling due to minerals content which bind water, therefore, soil improvement is required to stabilize the swelling behavior by add binder additive such as lime in deep soil mixing method (DSM). In this study, Finite Element model approach was performed with embankment provided on the top of expansive clay layer to provide bearing layer for road construction. As the deep soil mixing is applied on the subgrade (expansive clay layer), some model variation is performed such as diameter variation with 0.4m; 0.6m; 0.8m, depth variation with 5m; 6.5m; 8m and space variation 0.8 m;1.2m;1.6m; 2.4m. Area ratio parameter also used for ease understanding of deep soil mixing behavior with so many model variations provided. Analysis results shows that higher area ratio of deep soil mixing will provide lower displacement value either immediate displacement or consolidation displacement. Moreover, plot result of area ratio shows that area ratio of 0.4 provide effective value regarding consolidation displacement and duration.

References

Departemen Pekerjaan Umum, Pedoman Penanganan Tanah Ekspansif untuk Konstruksi Jalan. Jakarta: Departemen Pekerjaan Umum, 2005.

Muhammad Adianto Sulistiyo Hidayat, Bambang Setiawan, and Noegroho Djarwanti, "Stabilisasi Tanah Ekspansif dengan Kolom Kapur ditinjau Terhadap Potensi Mengembang dan Nilai Indeks Plastisitas," 2018.

Masaki Kitazume and Masaaki Terashi, The Deep Mixing Method., 2013.

Yulzi Zaika and Eko Andi Suryo, "The Behaviour of Untreated and Treated Expansive Soil as Embankment of Flexible Pavement," in Int. Conf. on Geotechnique, Costruction Material and Environment, vol. C3051, Kuala Lumpur, 2018.

Arifudin Nur, Suryo Hapsoro Tri Utomo, and M. Zudhy Irawan, "Stabilisasi Tanah Ekspansif Menggunakan Kapur dan Spent Catalyst untuk Tanah Dasar Perkerasan," vol. 19 , no. 1, 2019.

Gibral Maulana and Indra Noer Hamdhan, "Stabilisasi Tanah Lempung Ekspansif Menggunakan Campuran Renolith dan Kapur," vol. 2, no. 4, 2016.

Syawal, Munirwansyah, and Sofyan M. Saleh, "Dampak Penambahan Kapur Pada Tanah Lempung Ekspansif terhadap Nilai CBR Tanah Dasar Konstruksi Jalan," vol. 6, no. 1, 2016.

S. Abbey and S. Ngambi, "Understanding the Performance of Deep Mixed Columns Improved Soils - A Review," vol. 6, no. 3, 2015.

Euro Soil Slab, Design Guide Soft Soil Stabilization.: Ministry of Transport Public Works and Management, 2002, vol. Project No. BE 96-3177.

Guan-Bao Ye, Zhen Zhang, Hao-Feng Xing, Mao-Song Huang Jie Han, and Pei-Lin Xiang, "Performance Evaluation of an Embankment on Soft Soil Improved by Deep Mixed Columns and Prefabricated Vertical Drains," vol. 27, 2013.

Yan Jiang, Jie Han, and Gang Zheng, "Numerical Analysis of Consolidation of Soft Soils Fully Penetrated by Deep Mixing Columns," vol. 17, 2013.

Raja S. Madhyannapu and Anand J. Puppala, "Design and Construction guidelines for Deep Soil Mixing to Stabilize Expansive Soils," 2014.

Ekarut Archeewa, Anand J. Puppala, Sireesh Saride, and Seema Kalla, "Numerical Model Studies of Deep Soil Mixing (DSM) Column to Mitigate Bridge Approach Settelement," 2011.

Le Van Tuan, YongLai Zheng, ShuXin Deng, and Phung Vinh An, "Numerical Analysis of the Influence of Replacement Area Ratio in Foundation Reinforced with Soil Cement Columns," vol. 20, 2015.

R.B.J. Brinkgreve, Plaxis V8 - Plaxis Finite Element Code for Soil and Rock Analysis. Delft - Netherland, 2007.

Riota Abeng Ranggaesa, Yulvi Zaika, and Suroso, "Pengaruh Penambahan Kapur Terhadap Kekuatan dan Pengembangan *Swelling) pada Tanah Lempung Ekspansif Bojonegoro," 2017.

Badan Standarisasi Nasional - BSN, SNI-8460-2017 Persyaratan Perancangan Geoteknik. Jakarta: BSN, 2017.