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All Journal Jurnal Applied Science in Civil Engineering Journal of Civil Engineering and Vocational Education
Mulyanda, Dhevi
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Civil Engineering, Building, Construction & Architecture Education Engineering Environmental Science Transportation

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POTENSI PEMANFAATAN BITUMEN COLD MIX DAN POTONGAN SERAT BAN SEBAGAI BAHAN STABILISASI TERHADAP KARAKTERISTIK KUAT GESER TANAH LEMPUNG Mulyanda, Dhevi
Jurnal Applied Science in Civil Engineering Vol 4 No 4 (2023): Jurnal Applied Science in Civil Engineering
Publisher : Teknik Sipil Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/asce.v4i4.104283

Abstract

Tanah lempung memiliki sifat sangat kohesi, kadar kembang susut yang tinggi, dan proses konsolidasi yang sangat lambat. Oleh karena itu, diperlukan upaya untuk memperbaiki kondisi tanah sebelum dilakukan proses konstruksi dengan cara stabilisasi. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan potongan serat ban dan bitumen cold mix terhadap perubahan nilai kuat geser tanah yang meliputi nilai kohesi, sudut geser dan kuat geser dengan uji Triaxial Unconsolidated Undrained. Untuk melihat pengaruh penambahan bahan stabilisasi tersebut, dilakukan penelitian di laboratorium dengan membuat benda uji sebanyak 48 buah dengan 4 variasi kadar potongan serat ban (0%, 1%, 1,5%, dan 2%) dan 4 variasi kadar bitumen cold mix jenis emulsi (0%, 1%, 2%, dan 3%). Dari hasil pengujian diperoleh bahwa penambahan bitumen dan potongan serat ban dalam komposisi campuran tanah memberikan pengaruh berupa kenaikan parameter kuat geser tanah. Nilai kohesi tanah maksimum terjadi pada persentase 1% penambahan potongan serat ban dan 2% bitumen (T99B2SB1) dengan nilai kohesi sebesar 0.61 kg/cm2 . Sementara itu nilai sudut gesek maksimum terjadi pada penambahan 1.5% potongan serat ban dan 1% bitumen (T98.5B1SB1.5) dengan nilai sebesar 7.43o. Kuat geser sebagai fungsi penjumlahan kohesi dan sudut gesek juga mengalami peningkatan dengan nilai optimum kuat geser tanah berada pada persentase 2% bitumen dan 1% potongan serat ban (T99B1SB1) dengan nilai sebesar 0.995 kg/cm2. Hasil ini menunjukkan bahwa material stabilisasi yang digunakan pada penelitian dapat menjadi alternatif bahan campuran stabilisasi.
Mechanical Properties of Expansive Soil Stabilized by Sand Rahayu.J, Tri Kurnia; Herius, Andi; Mulyanda, Dhevi; Anggraini, Nita; Nadiareta, Akifah; ashifah, Anisah Qanitah
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.477

Abstract

Expansive clay soils have swelling and shrinkage properties and somehow reduce the mechanical properties required for soils to be used in civil engineering works. One method to improve the soil is by mechanical stabilization, namely mixing expansive clay soil with sand material. The sand material used in this research varied by 7.5%, 15%, and 22.5% of the total dry weight of expansive clay. The results shows that changes in mechanical properties were observed from the compaction test and California Bearing Ratio (CBR) both for soaked or unsoaked test. Based on these variations, in the compaction test, the addition of sand variations increases the maximum dry unit weight value and generally reduces the optimum water content value. The same results were also seen in the soaked and unsoaked CBR tests. In the swelling potential test, the addition of sand material succeeded in reducing the swelling value in expansive clay soils.
The Potential Usage of Bitumen Cold Mix and Tire Chips as Stabilization Material on Clay Soil Strength Characteristics Mulyanda, Dhevi
CIVED Vol. 10 No. 3 (2023): September 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i3.479

Abstract

Clay is a soil with fine particle size less than 0.002 mm, low permeability, cohession, high swelling, and slow consolidation process. Due to that problem it needs some improvement to stabilize the condition of soil before the process of construction conducted. The purpose of this study is to determine the effect of adding shredded tire and cold mix bitumen as the value of shear strength changing are cohession, friction angle, and shear strength with triaxial unconsolidated undrained test. To see the effect of those mixture, this study uses 48 soil samples with 4 variation of shredded tired (0%, 1%, 1,5%, and 2%) and 4 variation of cold mix bitumen (0%, 1%, 2%, dan 3%). The result of this study showed that the adding of shredded tired and cold mix bitumen in soil compositition can increase parameters of soil. The optimum cohession is on variation 1% SB+2% B (T99B2SB1) with the value 0.61 kg/cm2. Meanwhile the optimum value of friction angle is on variation 1.5% SB+ 1% B (T98.5B1SB1.5) with the value 7.43o. The shear strength as the sum of cohession and friction angle tends to increase with the optimum value about 0.995 kg/cm2 in variation 2% bitumen and 1% shredded tire (T99B1SB1). From the study, the adding of shredded tired and cold mix bitumen improve the shear strength. The optimum value of shear strength is on variation 2% B+1% SB (T99B1SB1) with the value 0.995 kg/cm2. This study shows that stabilization material used in this research can be an alternative material for soil stabilization.
Co-Authors ashifah, Anisah Qanitah Herius, Andi Nadiareta, Akifah Nita Anggraini, Nita Rahayu.J, Tri Kurnia