scholarly journals PENGARUH PERUBAHAN TEGANGAN PRAKONSOLIDASI EFEKTIF (Ó’ C) PADA PENAMBAHAN KAPUR TERHADAP TANAH LEMPUNG

2014 ◽  
Vol 10 (2) ◽  
Author(s):  
Dandung Novianto ◽  
Supiyono .
Keyword(s):  
Specific Gravity ◽  
Key Words ◽  
Basic Research ◽  
Liquid Limit ◽  
Test Results ◽  
Plastic Limit ◽  
Soil Mixing ◽  
The Third ◽  
Native Soil ◽  
Preconsolidation Pressure

Dandung Novianto1 & Supiyono2ABSTRACTLand in the northern Karangploso a lot of clay and road conditions are not yet paved area slopes Arjuno especially so with much rain like this to go down to the sub-wheel motorcycle must be given chain. With the state’s basic research is done, by mixing soil with lime. Research made by mixing soil and chalk in the four comparisons. The first native land. Both the original soil mixed with chalk 5%. The third native soil mixed with chalk 7.5%. The four original soil mixed with chalk 10%. Each of these sought specific gravity, liquid limit, plastic limit and plasticity index on the original soil, mixing 5%, 7.5% and 10%. From the test results, can be summed up as follows: The preconsolidation pressure original land is 0.66. Mixing soil with chalk, the most optimal to raise the preconsolidation pressure is mixing 10%. The pressure value Preconsolidation the mixing of 10% is 2.5.Key Words : Chalk, Clay and Preconsolidation Pressure.

scholarly journals PENGARUH PENAMBAHAN SERBUK BATA MERAH TERHADAP STABILITAS TANAH LEMPUNG SEBAGAI TANAH DASAR JALAN

2013 ◽  
Vol 10 (1) ◽  
Author(s):  
Moch. Sholeh ◽  
Dandung Novianto ◽  
Gerard Aponno
Keyword(s):  
Strong Support ◽  
Liquid Limit ◽  
Plasticity Index ◽  
Original Form ◽  
High Plasticity ◽  
Plastic Limit ◽  
Limit Values ◽  
Soil Mixing ◽  
Brick Powder ◽  
Index Value

Dosen Teknik Sipil Politeknik Negeri Malang Clay consists of grains - grains are very small (<0002 mm) and shows the nature - the natureof plasticity and cohesion. Cohesion indicates the fact that part - the part that is attached to eachother, while the plasticity is a trait that allows the form of the material was changed - edit withoutchanging the content or without returning to its original form, and without any cracks or brokens.And clay with high plasticity index has strong support low when used as a basic foundation of thehighway, so the need for soil improvement.From the above problems then this study aims to engineer clay with red brick powder in fourcomparisons. The first native land. Both the original soil mixed with red brick powder 5%. Thethird native soil mixed with red brick powder 7.5%. The four original soil mixed with red brickpowder 10%. Each of these sought specific gravity, liquid limit, plastic limit and plasticity index onthe original soil, mixing 5%, 7.5% and 10%. From the analysis of data obtained the followingconclusion: the original soil, the value amounting to 60.9 Liquid limit, plastic limit values of 42.8and plasticity index value of 18.1. The most optimal additional percentage is 7.5%. And PlasticityIndex value at 7.5% is 20,31.Key words : Red brick powder, Soil Stability, Subgrade and the Road.

Vortex-Induced Vibration Current Tank Tests of Two Equal Diameter Cylinders Offset From Tandem

2004 ◽  
Author(s):  
Don W. Allen ◽  
Dean L. Henning ◽  
Li Lee
Keyword(s):  
Specific Gravity ◽  
Reynolds Numbers ◽  
Test Results ◽  
Vortex Induced Vibration ◽  
The Third ◽  
Transverse Bending ◽  
Bending Modes ◽  
Outside Diameter ◽  
A Current ◽  
Line Direction

Two equal diameter ABS cylinders, offset from tandem, were subjected to uniform and sheared flows in a current tank at subcritical Reynolds numbers. Both tubes were filled with a saltwater solution to produce a specific gravity of 1.38. An accelerometer in each cylinder was used to measure the vortex-induced vibration response, which primarily varied between the third and seventh transverse bending modes. The cylinders were spaced at 3 to 20 diameters in the in-line direction and at 0, 0.5, and 1.0 diameter in the offset direction. Test results indicate that a downstream cylinder, for a pure tandem (no offset) configuration, experiences less vibration than the upstream cylinder when the upstream cylinder rms displacement is larger than about 0.35D. Offsets of 0.5 and 1.0 times the outside diameter produce lower vibration of the downstream cylinder relative to that of the upstream cylinder.

scholarly journals STABILISASI TANAH LEMPUNG MENGGUNAKAN KERIKIL UNTUK MENINGKATKAN DAYA DUKUNG (CBR) DI LABORATORIUM SEBAGAI BAHAN TIMBUNAN

2018 ◽  
Vol 1 (1) ◽  
pp. 41
Author(s):  
Annisaa Dwiretnani
Keyword(s):  
Carrying Capacity ◽  
Clay Soil ◽  
Soil Classification ◽  
Liquid Limit ◽  
Optimum Moisture Content ◽  
Plasticity Index ◽  
Test Results ◽  
Plastic Limit ◽  
Soil Plasticity ◽  
Cbr Test

Clay is a type of soil that has a high shrinkage when the change in water content. Construction of roads built on clay soil often damaged, eg cracked or bumpy roads would be damaged so that road before reaching the age of the plan. This study analyzes the behavior of clay in the area of Mendalo Darat, Provinsi Jambi, get maximum soil density and optimum moisture content with the addition of gravel 10%, 20%, 30% and 40%, then tested in the from of nature of the soil, the California Bearing Ratio (CBR). The results, according to the Unified Soil Classification System (USCS) methods. The addition of gravel will cause the properties of the soil Liquid Limit (LL) decreased with Plastic Limit (PL) decreased so that the Plasticity Index (PI) decreased. The addition of gravel will be working actively on the CBR test. From the test results obtained, clay that is stabilized with gravel on variations of 10%, 20%, 30% and 40% indicate an increase in crayying capacity soil and significant decrease in plasticity index. On the gravel mixture of 40% there is significant increase in carrying capacity of 11,90% of power support for the original soil, and on the gravel mixture of 40% also decreased index plasticity of 1,21 % of the original soil plasticity index. The smaller the plasticity index, the carrying capacity is getting bigger.Keywords: clay, stabilized, CBR

Experimental Study on Road Properties of High Liquid Limit Soil in Yunfu Highway

2015 ◽  
Vol 9 (1) ◽  
pp. 46-51 ◽  
Author(s):  
Zhu Lei
Keyword(s):  
Unconfined Compressive Strength ◽  
Laboratory Tests ◽  
Southern China ◽  
Physical And Mechanical Properties ◽  
Liquid Limit ◽  
Engineering Properties ◽  
Filling Material ◽  
Test Results ◽  
Plastic Limit ◽  
Better Than

There are a large number of high liquid limit soil distributed in southern China. As one of the special soils commonly seen in highway construction, high liquid limit soil cannot be used in subgrade filling directly due to its special engineering properties. With the idea of saving engineering investment and protecting environment, high liquid limit soil must be improved to be qualified subgrade filling material. First, detailed laboratory tests are carried out to reveal the special properties of high liquid limit soil. Then, based on the characters of high liquid limit soil, the improving tests of liquid plastic limit, unconfined compressive strength, CBR and compaction are completed by adding different percentages of quicklime and white lime to the high liquid limit soil to study the change in the physical and mechanical properties and strength. The results show that, after being improved by lime, the high liquid limit soil can be used as subgrade filling of expressway as its liquid limit, plastic index being reduced, the strength increased and the value of CBR increased remarkably, and modified effectiveness of quicklime is better than that of white lime. Through comparison and analysis of the test results, it is found that high liquid limit soil with 5% quicklime can be used as subgrade filling material for highway since it is not only economical but also qualified to meet the requirement of improvement and strength.

scholarly journals PENGARUH PENAMBAHAN SERBUK BATA MERAH TERHADAP STABILITAS TANAH LEMPUNG SEBAGAI TANAH DASAR JALAN

2014 ◽  
Vol 10 (2) ◽  
Author(s):  
Moch. Sholeh ◽  
Dandung Novianto
Keyword(s):  
Strong Support ◽  
Liquid Limit ◽  
Plasticity Index ◽  
Original Form ◽  
High Plasticity ◽  
Plastic Limit ◽  
Limit Values ◽  
Soil Mixing ◽  
Brick Powder ◽  
Index Value

Moch. Sholeh1 & Dandung Novianto21 & 2Fakultas Teknik Jurusan Teknik Sipil Politeknik Negeri MalangABSTRACTClay consists of grains - grains are very small (<0002 mm) and shows the nature - the natureof plasticity and cohesion. Cohesion indicates the fact that part - the part that is attached to eachother, while the plasticity is a trait that allows the form of the material was changed - edit withoutchanging the content or without returning to its original form, and without any cracks or brokens.And clay with high plasticity index has strong support low when used as a basic foundation of thehighway, so the need for soil improvement.From the above problems then this study aims to engineer clay with red brick powder in fourcomparisons. The first native land. Both the original soil mixed with red brick powder 5%. The thirdnative soil mixed with red brick powder 7.5%. The four original soil mixed with red brick powder10%. Each of these sought specific gravity, liquid limit, plastic limit and plasticity index on theoriginal soil, mixing 5%, 7.5% and 10%. From the analysis of data obtained the following conclusion:the original soil, the value amounting to 60.9 Liquid limit, plastic limit values of 42.8 and plasticityindex value of 18.1. The most optimal additional percentage is 7.5%. And Plasticity Index value at7.5% is 20,31.Key words : Red brick powder, Soil Stability, Subgrade and the Road

scholarly journals Determination of the Atterberg Limits of Eemian Gyttja on Samples with Different Composition

2020 ◽  
Vol 42 (2) ◽  
pp. 168-178 ◽  
Author(s):  
Katarzyna Goławska ◽  
Zbigniew Lechowicz ◽  
Władysław Matusiewicz ◽  
Maria Jolanta Sulewska
Keyword(s):  
Organic Matter ◽  
Calcium Carbonate ◽  
Organic Matter Content ◽  
Liquid Limit ◽  
Matter Content ◽  
Carbonate Content ◽  
Test Results ◽  
Plastic Limit ◽  
Calcium Carbonate Content

AbstractThe paper presents the results of laboratory tests of plastic limit wP and liquid limit wL of Eemian gyttja characterized by different organic matter content Iom and calcium carbonate content CaCO3. Comparison of the liquid limit wL determined with the use of the Casagrande apparatus wLC and a cone penetrometer with cones having apex angles of 60° wL60 and 30° wL30 is shown. Based on statistical analysis of the test results, single- and two-factor empirical relationships for evaluating the plastic limit wP and liquid limit wL of Eemian gyttja depending on the organic matter content Iom and/or calcium carbonate content CaCO3 are presented in this study.

scholarly journals Strengthening Of Soft Soil Using Caboxymethyl Cellelouse Biopolymer

2022 ◽  
Vol 961 (1) ◽  
pp. 012030
Author(s):  
Teba A Abd ◽  
Mohammed Y Fattah ◽  
Mohammed F Aswad
Keyword(s):  
Specific Gravity ◽  
Soil Stabilization ◽  
Soft Soil ◽  
Liquid Limit ◽  
Morphological Properties ◽  
Plastic Limit ◽  
Optimum Water Content ◽  
Recompression Index ◽  
Engineering Parameters ◽  
Optimum Water

Abstract The application of appropriate chemicals is a widely used strategy for soil stabilization. The drive of this study is to determine the possibility of using the biopolymer carboxymethyl cellulose as an environmentally acceptable soil stabilizer. In this work, Atterberge limits tests, specific gravity, compaction, and consolidation tests were used to determine the engineering parameters of soils treated with varying amounts of biopolymer. Additionally, changes in the morphological properties of the soft soils were evaluated using scanning electron microscopy (SEM). It was estimated that as the soil’s biopolymer content increases, the specific gravity drops down, though the optimum water content (OMC) is extended. The outcomes showed diverse effects on Atterberg’s limits by cumulative the liquid limit(LL) and plasticity index (PI) though decreasing the plastic limit as the bio-polymer content increases. By the addition in polymer gratified, the combination boundaries (Solidity index Cc and recompression index Cr) decline.

PENELITIAN STABILITAS STRUKTUR TANAH LEMPUNG BERSIFAT MONMORILLONITE MENGGUNAKAN LIMBAH AMPAS KOPI

2020 ◽  
Vol 3 (1) ◽  
pp. 108
Author(s):  
Hadi Santoso ◽  
Yosef Cahyo ◽  
Ahmad Ridwan
Keyword(s):  
Soil Compaction ◽  
Liquid Limit ◽  
Soil Stability ◽  
Plastic Limit ◽  
Coffee Pulp ◽  
Limit Value ◽  
Native Soil ◽  
Coffee Grounds ◽  
Coffee Pulp Waste ◽  
Soil Mix

In the field of construction, the land is a media base of the core of a building. The soil structure, which consists mainly of clay in its component, has montmorillonite properties. The level of soil stability that is montmorillonite is not good enough for the support of building infrastructure. This study uses coffee grounds waste and variations of 5%, 10%, 15%, and 20% in montmorillonite soil. In the soil stability test using montmorillonite soil mix specimens with coffee grounds waste, the content weight, consistency limit, and soil compaction tests were conducted. On the results of this study, the structure of the native soil categorized as montmorillonite with adding coffee pulp on additions varied to a maximum of 20%. The Liquid Limit value rises to 43%. The Plastic Limit value increased to 31.64% so that the plastic index could rise to 11.36 %. When the compaction test with the condition of the solid specimen is perfect, the dry volume of the original soil is 6.72 gr/cm 3. After adding coffee pulp waste by 20%, the bare amount increases to 10.56 gr/cm3.Dalam bidang konstruksi, tanah adalah suatu media pijakan inti dari sebuah bangunan. Struktur Tanah yang sebagian besar terdiri dari lempung didalam komponennya, memiliki sifat  monmorillonite. Tingkat stabilitas tanah yang bersifat montmorillonite terbilang kurang bagus terhadap daya topang infrastruktur bangunan. Penelitian ini menggunakan limbah ampas kopi pada variasi penambahan 5%, 10%, 15% dan 20% pada tanah montmorillonite. Pada uji stabilitas tanah dengan menggunakan benda uji mix tanah montmorillonite dengan limbah ampas kopi, dilakukan Uji Berat Isi, Batas konsistensi (Atterberg Limit) dan Pemadatan Tanah (Proctor). Pada hasil penelitian struktur tanah asli yang dikategorikan montmoroillonite, setelah ditambah ampas kopi pada penambahan variasi maksimal sebesar 20%, nilai Liquid Limit naik menjadi 43% dan nilai Plastic Limit mengalami kenaikan menjadi 31,64%, sehingga index plastic dapat mengalami peningkatan menjadi 11,36%. Saat uji pemadatan dengan kondisi benda uji padat sempurna, berat volume kering tanah asli sebesar 6,72 gr/cm3 dan setelah ditambahkan limbah ampas kopi sebesar 20% mengalami peningkatan berat volume kering menjadi 10,56 gr/cm3.

scholarly journals Experimental study on the basic physical properties of diesel contaminated soil

2020 ◽  
Vol 165 ◽  
pp. 02008
Author(s):  
Xiaohong He ◽  
Fan Liu ◽  
Guang Li ◽  
Hai Lu
Keyword(s):  
Specific Gravity ◽  
Physical Properties ◽  
Soil Sample ◽  
Contaminated Soil ◽  
Oil Content ◽  
Great Influence ◽  
Diesel Oil ◽  
Liquid Limit ◽  
Plastic Limit ◽  
Limit Test

In order to study the change of the properties of petroleum contaminated soil, the samples of diesel contaminated soil with different degrees of pollution were prepared manually, and their basic physical properties were tested through the particle test, specific gravity test and liquid plastic limit test. The results show that the diesel oil has a great influence on the particle size composition of soil, and the diesel oil makes the content of silt decrease, while the clay increase obviously; the specific gravity of soil sample decreases with the increase of oil content, and it is smaller than the proportion of unpolluted soil sample; the influence of diesel oil on the liquid-plastic limit of soil is different, the plastic limit of soil decreases with the increase of oil content, and the liquid limit increases first at a certain oil content, it reaches a peak value and then decreases.

scholarly journals Soil Unconfined Compressive Strength Prediction Using Random Forest (RF) Machine Learning Model

2020 ◽  
Vol 14 (1) ◽  
pp. 278-285
Author(s):  
Hai-Bang Ly ◽  
Binh Thai Pham
Keyword(s):  
Machine Learning ◽  
Compressive Strength ◽  
Random Forest ◽  
Specific Gravity ◽  
Moisture Content ◽  
Unconfined Compressive Strength ◽  
Void Ratio ◽  
Clay Content ◽  
Liquid Limit ◽  
Plastic Limit

Aims: Understanding the mechanical performance and applicability of soils is crucial in geotechnical engineering applications. This study investigated the possibility of application of the Random Forest (RF) algorithm – a popular machine learning method to predict the soil unconfined compressive strength (UCS), which is one of the most important mechanical properties of soils. Methods: A total number of 118 samples collected and their tests derived from the laboratorial experiments carried out under the Long Phu 1 power plant project, Vietnam. Data used for modeling includes clay content, moisture content, specific gravity, void ratio, liquid limit and plastic limit as input variables, whereas the target is the UCS. Several assessment criteria were used for evaluating the RF model, namely the correlation coefficient (R), root mean squared error (RMSE) and mean absolute error (MAE). Results: The results showed that RF exhibited a strong capability to predict the UCS, with the R value of 0.914 and 0.848 for the training and testing datasets, respectively. Finally, a sensitivity analysis was conducted to reveal the importance of input parameters to the prediction of UCS using RF. The specific gravity was found as the most affecting variable, following by clay content, liquid limit, plastic limit, moisture content and void ratio. Conclusion: This study might help in the accurate and quick prediction of the UCS for practice purpose.

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