Correlation of UCS and CBR on Lightweight Geocomposite of Soil-EPS Stabilized by Waste of Buton Asphalt

2020 ◽  
Vol 998 ◽  
pp. 311-316
Author(s):  
Ichsan Rauf ◽  
Lawalenna Samang ◽  
Tri Harianto ◽  
Ardy Arsyad
Keyword(s):  
Compressive Strength ◽  
Mechanical Behavior ◽  
Compression Test ◽  
Expanded Polystyrene ◽  
California Bearing Ratio ◽  
Dry Density ◽  
Period Effect ◽  
Unconfined Compression ◽  
Unconfined Compression Test ◽  
Curing Period

The conventional embankment has disadvantages in terms of its weight; it has an implication for the level of deformation that will occur on the subgrade layer. This study was conducted dealing with the design of geocomposite material compositions based on their mechanic characteristics. The lightweight geocomposit material (LWGM) was constructed by composing soil with expanded polystyrene (EPS) with by-product of buton asphalt as the binder agent (WBA). Unconfined Compression Test (UCT) and California Bearing Ratio (CBR) were examined to figure out the mechanical behavior of LWGM. The percentages of WBA used on specimens were 3%, 5%, 7% and 9%, while those of EPS were 0.15% and 0.30%, based on weight of soils dry density. Furthermore, to understand the curing period effect, all the specimens were cured and tested within 7 days and 28 days. The results showed that the LWGM could reduce the embankment densities from 20% to 35%, compared to conventional embankment. The compressive strength and CBR values presented the same tendency, so that, based on correlation of UCS and CBR value, the LWGM compositions that are appropriate for road foundation criteria as subbase courses are 3.2% to 7% for the WBA and 0,15% - 0,30% for the EPS.

scholarly journals Perilaku Geser Tanah yang Distabilisasi dengan Abu Ampas Tebu-Semen dan Inklusi Serat Polyester

2017 ◽  
Vol 23 (2) ◽  
pp. 133
Author(s):  
John Tri Hatmoko ◽  
Hendra Suryadharma
Keyword(s):  
Compression Test ◽  
Polyester Fibre ◽  
Dry Density ◽  
Unconfined Compression ◽  
Maximum Dry Density ◽  
Unconfined Compression Test ◽  
Compaction Test ◽  
Curing Period ◽  
High Calcium ◽  
Stabilized Soil

Bagasse ash is a fine residue collected from the burning of bagasse in sugar factory, and it behaves as pozzolanic materials. In addition, engineering behaviour of bagasse ash can be improved by addition of cement containing high calcium. Recently, research about cement stabilized soil is continuously in progress. In this paper, a set of experiment programs were done to investigate the randomly oriented polyester fibre  inclusion in bagasse ash-cement stabilized soil.  Bagasse ash was mixed with clay in different proportions. To get the optimum curing period,  it was done light compaction test of soil with 8% cement cured with 7, 14, 21, 28 and 36 days curing period,  that was found on 28 days. The next experiment was compaction test on soil + 8% cement + 3,6,9 and 12% bagasse ash to obtain optimum bagasse ash proportion. The result indicated that optimum bagasse ash content was 9%. To ensure this result, unconfined compression test was done on the same sample. Finally, light compaction, unconfined compression and direct shear tests were done on : soil + 8% cement + 9% bagasse ash +  polyester fibre with 28 days curing period. The results showed that maximum dry density and optimum moisture content was not influenced by fibre inclusion, whereas the increase of shear strength of stabilized soil with fibre inclusion  was mainly due to improvement of internal friction angle. In unconfined compression test, the unconfined compression strength of stabilized soil was significantly improved by fibre inclusion.

scholarly journals Performance of THM behavior of sand-bentonite mixtures considering thermal effect

2021 ◽  
Vol 337 ◽  
pp. 01020
Author(s):  
Tomoyoshi Nishimura ◽  
Junichi Koseki
Keyword(s):  
Compressive Strength ◽  
Relative Humidity ◽  
Compression Test ◽  
Unconfined Compressive Strength ◽  
Triaxial Compression ◽  
Radioactive Waste Disposal ◽  
Unconfined Compression ◽  
Unconfined Compression Test ◽  
Sand Mixture ◽  
High Level

This study presented the overview on the behavior of bentonite-sand mixture used in high level radioactive waste disposal. Both unconfined compression test and triaxial compression test were conducted out that unsaturated-saturated bentonite-sand samples were applied temperature effect below 100 degrees Celsius. Unconfined compressive strength was determined with various temperatures and different relative humidity for unsaturated bentonite-sand specimens, so the growing of pore pressure due to heating was most significant for interpretation to THM behaviour of artificial barrier system compositing bentonite materials.

scholarly journals PENGARUH PENGGUNAAN BAHAN SERBUK MARMER PADA STABILISASI TANAH LEMPUNG EKSPANSIF (Kasus Tanah Lempung Ekspansif di Daerah Citra Land Surabaya)

2019 ◽  
Vol 16 (2) ◽  
Author(s):  
Ernawan Setyono ◽  
Sunarto Sunarto ◽  
Anggita Moro Gumilang
Keyword(s):  
Compression Test ◽  
California Bearing Ratio ◽  
Unconfined Compression ◽  
Unconfined Compression Test

Konstruksi jalan diatas tanah dasar yang bersifat ekspansif banyak dijumpai di Indonesia. Jenis tanah ini akan mengembang dan dapat menyebabkan jalan atau struktur terangkat disaat kondisi kadar air tinggi. Sebaliknya disaat kadar airnya rendah, tanah ekspansif akan menyusut dan dapat menyebabkan penurunan jalan (shrinkage). Akibat perubahan muai susut (swelling and shrinkage activity) kontruksi jalan menjadi tidak stabil sehingga untuk jangka waktu yang lama terjadi keretakan memanjang dan bergelombang. Salah satu upaya untuk mendapatkan sifat tanah yang memenuhi syarat teknis tertentu adalah dengan metode stabilisasi tanah menggunakan bahan tambah serbuk marmer dari hasil olahan pabrik marmer di Tulungagung, Jawa Timur. Untuk mengetahui pengaruh penambahan serbuk marmer terhadap kekuatan dan nilai daya dukung tanah dibuktikan dengan pengujian Unconfined Compression Test dan uji California Bearing Ratio. Benda uji dibuat dengan variasi penambahan serbuk marmer sebesar 5%, 10%, 15%, 20%, 25%. Dari pengujian menunjukkan bahwa tanah lempung ekspansif yang distabilisasi dengan serbuk marmer dapat memperbaiki sifat fisik dan mekanik tanah. Pada uji sifat fisik tanah sampel yang diambil termasuk tanah lempung dengan tingkat plastisitas rendah. Sedangkan nilai kuat tekan dan daya dukung tanah meningkat setelah distabilisasi dengan serbuk marmer.

scholarly journals Comparison of the Use of Cement, Gypsum, and Limestone on the Improvement of Clay through Unconfined Compression Test

2019 ◽  
Vol 5 (2) ◽  
pp. 131
Author(s):  
Ika Puji Hastuty
Keyword(s):  
Compressive Strength ◽  
Shear Strength ◽  
Soil Properties ◽  
Compression Test ◽  
Unconfined Compressive Strength ◽  
Soil Stabilization ◽  
Unconfined Compression ◽  
Unconfined Compression Test ◽  
Limestone Soil ◽  
Materials Used

Soil stabilization is an effort to improve soil properties by adding additives in the soil to increase the soil strength and maintain the shear strength of the soil. There are many materials which can be used as stabilizers. The materials used in this study were cement, gypsum, and limestone, then the compressive strength values were compared by using the Unconfined Compression Test (UCT). The mixture combinations used in this study were 1% to 10% of cement, gypsum, and limestone on clay by curing for 14 days. The compressive strength value resulted from the unconfined compression test on the original soil sample was 1.4 kg/cm2. The original soil was classified as moderately sensitive soil because the sensitivity value of the original soil was 2. After being stabilized with various mixtures of cement, gypsum, and limestone, soil stabilization using cement obtained the maximum unconfined compressive strength value is 3.681 kg/cm2 in the mixture of 10%. Similarly, the soil stabilization using limestone and gypsum also obtained its maximum unconfined compressive strength value in the mixture of 10% is 3.307 kg/cm2 and 2.975 kg/cm2, respectively.

The influence of the addition of ground olive stone on the thermo-mechanical behavior of compressed earth blocks

2020 ◽  
Vol 108 (2) ◽  
pp. 203
Author(s):  
Samia Djadouf ◽  
Nasser Chelouah ◽  
Abdelkader Tahakourt
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Mechanical Behavior ◽  
Agricultural Waste ◽  
Hydraulic Press ◽  
Dry Density ◽  
Olive Stone ◽  
Compressed Earth Blocks ◽  
Clay Matrix ◽  
Earth Blocks

Sustainable development and environmental challenges incite to valorize local materials such as agricultural waste. In this context, a new ecological compressed earth blocks (CEBS) with addition of ground olive stone (GOS) was proposed. The GOS is added as partial clay replacement in different proportions. The main objective of this paper is to study the effect of GOS levels on the thermal properties and mechanical behavior of CEB. We proceeded to determining the optimal water content and equivalent wet density by compaction using a hydraulic press, at a pressure of 10 MPa. The maximum compressive strength is reached at 15% of the GOS. This percentage increases the mechanical properties by 19.66%, and decreases the thermal conductivity by 37.63%. These results are due to the optimal water responsible for the consolidation and compactness of the clay matrix. The substitution up to 30% of GOS shows a decrease of compressive strength and thermal conductivity by about 38.38% and 50.64% respectively. The decrease in dry density and thermal conductivity is related to the content of GOS, which is composed of organic and porous fibers. The GOS seems promising for improving the thermo-mechanical characteristics of CEB and which can also be used as reinforcement in CEBS.

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