scholarly journals STUDI PERBANDINGAN PENCAMPURAN 4 JENIS LIMBAH YANG SULIT DIDAUR ULANG TERHADAP PENINGKATAN PROPERTI TANAH

2019 ◽  
Vol 2 (3) ◽  
pp. 117
Author(s):  
Stanislaus Stanislaus ◽  
Aniek Prihatiningsih
Keyword(s):  
Fly Ash ◽  
Compression Test ◽  
Unconfined Compression ◽  
Unconfined Compression Test ◽  
Clay Shale

Keadaan tanah memiliki peran penting terhadap keperluan konstruksi dalam bidang teknik sipil, tanah berfungsi untuk menopang suatu bangunan konstruksi di atasnya, namun di beberapa tempat di Indonesia terdapat daerah yang memiliki tanah yang kurang baik seperti memiliki daya dukung rendah, hal ini sangat berpengaruh terhadap proses konstruksi. Selain tanah yang kurang baik limbah juga merupakan faktor permasalahan utama yang terjadi di Indonesia, limbah yang dibuang dan tertumpuk pada satu wilayah tertentu dapat menyebabkan dampak negatif terhadap lingkungan. Untuk menghindari hal tersebut maka dilakukanlah suatu penelitian agar limbah yang tidak dapat didaur ulang tersebut dapat digunakan sebagai bahan stabilisasi tanah, dan diharapkan dapat meningkatkan daya dukung dari tanah itu sendiri.Penelitian ini menggunakan tanah clay shale dari daerah Cietereup Sentul Bogor. Pengujian menggunakan unconfined compression test dengan komposisi variasi limbah yaitu serbuk kaca, abu sekam padi, styrofoam, dan fly ash type F sebesar 10% berdasarkan volume mold unconfined compression test.

scholarly journals ANALISIS KUAT GESER TANAH CLAY SHALE YANG TERENDAM DAN TIDAK TERENDAM DENGAN UNCONFINED COMPRESSION TEST

2019 ◽  
Vol 2 (1) ◽  
pp. 77
Author(s):  
Hans Tantra ◽  
Aniek Prihatiningsih
Keyword(s):  
Compression Test ◽  
Unconfined Compression ◽  
Unconfined Compression Test ◽  
Clay Shale

Tanah di Indonesia terdiri dari berbagai macam jenis dan karakteristik yang berbeda–beda. Sehingga di setiap proses konstruksi, kita perlu mengidentifikasi terlebih dahulu jenis dan karakteristik tanah apa yang menjadi dasar konstruksi tersebut dibangun. Salah satu jenis tanah yang ada di Indonesia yang sering menyebabkan masalah selama pembangunan, yaitu tanah clay shale. Tanah clay shale memiliki karakteristik mudah mengalami pelapukan tanah jika terus menerus terekspos dengan udara, pelapukan tanah dapat mengakibatkan penurunan kuat geser tanah yang dapat menyebabkan terjadinya longsor di daerah konstruksi bangunan. Melalui tes unconfined compression test kita dapat memperoleh nilai kuat tekan dan kuat geser. Dalam penelitian ini, lokasi sampel yang akan di uji berasal dari Jl.Babakan Sirkuit Tangkil, Citereup, Bogor, Indonesia. Pengetasan unconfined compression test akan dilakukan pada laboratorium tanah Universitas Tarumanagara. Untuk sampel yang akan diuji terdiri dari dua kondisi sampel dengan keadaaan berbeda. Sampel akan diuji dalam kondisi rendam dan tidak rendam dengan masing–masing durasi sampel di rendam dan tidak rendam selama 0 minggu, 1 minggu, 3 minggu, 5 minggu, dan 7 minggu. Hasil penelitian menunjukkan nilai kuat tekan terbesar pada sampel yang tidak di rendam berada pada durasi 5 minggu pendiaman sebesar 1133.2275 kN/m2 dan mulai menurun pada sampel dengan durasi 7 minggu. Untuk sampel dengan kondisi terendam, kuat tekan terbesar berada pada sampel 1 minggu perendaman dengan nilai sebesar 11.635 kN/m2 dan nilai kuat tekan mulai menurun pada sampel dengan durasi 3 minggu rendaman. Nilai kohesi pada percobaan ini berbanding lurus dengan nilai kuat tekan sehingga untuk sampel tidak rendam, nilai kohesi terbesar berada pada kondisi pendiaman 5 minggu dan untuk sampel rendam nilai kohesi terbesar berada pada kondisi perendaman 1 minggu.

scholarly journals An Investigation on the Effect of Calcite Bacteria Seeding on Shear Strength of Peat Soil via an Unconfined Compression Test

2015 ◽  
Vol 773-774 ◽  
pp. 1513-1517
Author(s):  
Norbaya Sidek ◽  
S. Abdul-Talib ◽  
N. Mohd Zain ◽  
N.R.N.A. Rashid ◽  
I.A. Abu Bakar
Keyword(s):  
Shear Strength ◽  
Liquid Medium ◽  
Compression Test ◽  
Peat Soil ◽  
High Water Content ◽  
Unconfined Compression ◽  
Water Control ◽  
Unconfined Compression Test ◽  
Sporosarcina Pasteurii ◽  
Modified Urea

Peat soils have been known for their problematic characteristics which include high water content, high compressibility and low shear strength. In this study, an attempt was made to investigate the effect of 1 week addition of modified Urea-CaCl2liquid medium with and withoutSporosarcina pasteuriion the shear strength of unsterilized dried peat soil using the Unconfined Compression Test. After the treatment period, significant increase in the shear strength of the soil was found to be highest for peat + medium at 42 kN/m2, moderate for peat + medium +Sporosarcina pasteuriiat 27 kN/m2and unchanged for peat + water control at 24 kN/m2. Although the growth dynamics of all the microbes involved in the calcite formation in the treated peat soil were not known, the addition of the modified Urea-CaCl2liquid medium into the soil clearly had contributed to the marked increased in the shear strength of the soil. It is probable that the medium had promoted a better growth of indigenous calcite bacteria population in the soil which may have been suppressed by the slow growingS. pasteuriipopulation being added daily to the soil

Mechanical Analysis of Unconfined Compression Test of Cylinder

2018 ◽  
Vol 2672 (27) ◽  
pp. 37-44
Author(s):  
Jian Xiao ◽  
Zhiming Tan ◽  
Jingliang Chen
Keyword(s):  
Compression Test ◽  
Poisson Ratio ◽  
Current Method ◽  
Vertical Displacement ◽  
Mechanical Analysis ◽  
Outer Side ◽  
Unconfined Compression ◽  
Unconfined Compression Test ◽  
Maximum Tensile Strain ◽  
End Restraint

The unconfined compression test is widely used because of convenient specimen formation, simple experimental process, and low requirement for equipment. In view of the experimental characteristics, the axisymmetric mechanical model of a cylinder with horizontal friction was constructed and its elastic analytic solution was also deduced. The stress and the strain of the cylinder under unconfined compression with different boundary conditions were analyzed by using the analytical solution, and the failure characteristics of the cylinder under unconfined compression were studied and verified by laboratory testing. The results showed that the end restraint effect of the cylinder increased with the decrease of the height-to-diameter ratio and the increase of the Poisson ratio. When the end surface of the cylinder was constrained, the maximum tensile strain appeared in the middle of the cylindrical side; its value increased with the constraint effect, and greater loads were needed to make the same vertical displacement. The compressive strength derived from the current method would be too weak, and the compressive modulus of elasticity would be too great. If the end constraint was large, a small network crack first formed in the middle of the outer side of the cylinder, forming the double-tapered destruction. If the end face was weakly restrained, the cracks descended from the top to the bottom, and the specimens split.

scholarly journals Evolution of the Geotechnical Properties of Fly Ash Stabilized Silty Soil Activated by Graphene Oxide (GO)

2019 ◽  
Vol 8 (2) ◽  
pp. 4732-4737 ◽  
Keyword(s):  
Graphene Oxide ◽  
Fly Ash ◽  
Soil Stabilization ◽  
Dry Density ◽  
Unconfined Compression ◽  
Maximum Dry Density ◽  
Unconfined Compression Test ◽  
Soil Matrix ◽  
Silty Soil ◽  
Limit Test

At present time, there are vastly available of various nanomaterials, by using this material it plays an important role in various applications along with geotechnical soil stabilization/strengthen techniques. In the present investigation the addition of Graphene Oxide (GO) solution as nanomaterial into the low cemented fly ash (Class F – fly ash) to improving various properties of a local available silty soil. The various tests such as light compaction test, unconfined compression test, direct shear test, liquid limit, and plastic limit test were performed on the newly formed matrix to check their respective behavior to stimulated actual site condition on the given matrix in the laboratory. Also Scanning Electron Microscopy (SEM) analysis was performed to study the structure of the newly formed matrix. The addition of small proportion GO in original soil-fly ash matrix decrease the plasticity index and at the same time increase the maximum dry density, unconfined compression strength, and cohesion value help to use newly soil matrix effectively.

scholarly journals About the Uncertainty of Unconfined Compression Test Results on Cement Improved Soil

2014 ◽  
Vol 63 (1) ◽  
pp. 44-48
Author(s):  
Kohei SAWA ◽  
Yoshihisa NAKAYAMA ◽  
Natsuko KUSUMOTO ◽  
Yumi NAKATA
Keyword(s):  
Compression Test ◽  
Test Results ◽  
Unconfined Compression ◽  
Unconfined Compression Test

scholarly journals Pengaruh Penambahan Abu Cangkang Kelapa Sawit Pada Tanah Lempung Paccinongang Kabupaten Gowa

2021 ◽  
Vol 3 (2) ◽  
pp. 202-211
Author(s):  
Leonard Felix Widyo Sanderan ◽  
Irwan Lie Keng Wong ◽  
Monika Datu Mirring Palinggi
Keyword(s):  
Physical Properties ◽  
Compression Test ◽  
Oil Palm ◽  
Clay Soil ◽  
Soil Layer ◽  
Unconfined Compression ◽  
Free Press ◽  
Unconfined Compression Test ◽  
Palm Shell ◽  
Oil Palm Shell

Soil has an important role in a highway construction planning that serves to pass the load from the top layer, but not always the basic soil layer is able to function properly. Therefore, in this study was conducted to find out the effect of the addition of oil palm shell ash on clay soil to UCT (Unconfined Compression Test). The type of soil that will be usedfor penelitian is clay soil taken in Paccinongang area, Gowa Regency. The methodology in this study conducted several    soil physical properties testing then Kompaksi testing to obtain optimum moisture content value, and Unconfined Compression Test to get strong press value (qu). The results of the study showed that the soil meets the physical properties of clay soil. From The Free Press Strong test on the ash content of the palm shell 0%, 3%, 6%, 9%, 12% and 15% at point 1 the free press strength value decreased from 0% by 0.362% and increased at 9% by 0.424%. Meanwhile, at point 2, it decreased by 0% by 0.445% and increased at 12% by 0.423%.  From the Unconfined Compression Test on Paccinongang clay, Gowa Regency with the addition of oil palm shell ash from both samples, there was an increase in the addition of 9% and 12% of normal clay soil.

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