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

scholarly journals Pengaruh Penambahan Abu Batu (Fly Ash) Terhadap Plastisitas Tanah Lempung Di Kabupaten Fakfak

2020 ◽  
Vol 19 (1) ◽  
pp. 79-86
Author(s):  
Muhammad Yunus ◽  
Muhammad Aswan
Keyword(s):  
Fly Ash ◽  
Clay Soil ◽  
Liquid Limit ◽  
Plasticity Index ◽  
Plastic Limit ◽  
The Road ◽  
Limit Value ◽  
A Value ◽  
Before And After ◽  
Index Value

The road conditions in the Fakfak Regency area have suffered a lot of damage, this is related to the subgrade condition of the road in the form of clay. One method that is widely used to improve the characteristics of clay that does not fulfill the requirements as a road subgrade material is to add fly ash. Aim of this study was to determine the value of clay plasticity before and after adding rock ash with the percentage of stone ash 8%, 16%, 32%. From the results of testing on clay soaked for 7 days can reduce the liquid limit value where the largest decrease is 15,24% of the original soil occurs in the addition of 32% fly ash with a value of 66,86%. The plastic limit value also decreased by 20,40% from the original soil with a value of 46,10% at the addition of 32% fly ash. And the plasticity index value experienced the largest decrease in the addition of 32% stone ash with a decrease of 0,97% from the original soil with a value of 20,76%. In clay soil which was brooded for 14 days the largest liquid limit value decreased which was 18.72% of the original soil occurred in the addition of 32% fly ash with a value of 64,11%. The plastic limit value also decreased by 21,77% from the original land with a value of 45,31% at the addition of 32% fly ash. And the plasticity index value experienced the largest decrease in the addition of 32% stone ash with a decrease of 10,32% from the original land with a value of 18,80%.

scholarly journals Reappraisal of the ASTM/AASHTO Standard Rolling Device Method for Plastic Limit Determination of Fine-Grained Soils

Geosciences ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 247
Author(s):  
Amin Soltani ◽  
Brendan C. O’Kelly
Keyword(s):  
Soil Classification ◽  
Liquid Limit ◽  
Plastic Limit ◽  
Soil Plasticity ◽  
Reference Limit ◽  
Fine Grained ◽  
Fine Grained Soil ◽  
Thread Rolling ◽  
Hand Test ◽  
Repeatability And Reproducibility

Given its apparent limitations, various attempts have been made to develop alternative testing approaches to the standardized rolling-thread plastic limit (PLRT) method (for fine-grained soils), targeting higher degrees of repeatability and reproducibility. Among these, device-rolling techniques, including the method described in ASTM D4318/AASHTO T90 standards, based on original work by Bobrowski and Griekspoor (BG) and which follows the same basic principles as the standard thread-rolling (by hand) test, have been highly underrated by some researchers. To better understand the true potentials and/or limitations of the BG method for soil plasticity determination (i.e., PLBG), this paper presents a critical reappraisal of the PLRT–PLBG relationship using a comprehensive statistical analysis performed on a large and diverse database of 60 PLRT–PLBG test pairs. It is demonstrated that for a given fine-grained soil, the BG and RT methods produce essentially similar PL values. The 95% lower and upper (water content) statistical agreement limits between PLBG and PLRT were, respectively, obtained as −5.03% and +4.51%, and both deemed “statistically insignificant” when compared to the inductively-defined reference limit of ±8% (i.e., the highest possible difference in PLRT based on its repeatability, as reported in the literature). Furthermore, the likelihoods of PLBG underestimating and overestimating PLRT were 50% and 40%, respectively; debunking the notion presented by some researchers that the BG method generally tends to greatly underestimate PLRT. It is also shown that the degree of underestimation/overestimation does not systematically change with changes in basic soil properties; suggesting that the differences between PLBG and PLRT are most likely random in nature. Compared to PLRT, the likelihood of achieving consistent soil classifications employing PLBG (along with the liquid limit) was shown to be 98%, with the identified discrepancies being cases that plot relatively close to the A-Line. As such, PLBG can be used with confidence for soil classification purposes.

scholarly journals STUDI PENYEBAB TERJADINYA LONGSOR PADA JALAN PROVINSI LINTAS SIPAHUTAR-PANGARIBUAN DESA SIABAL-ABAL II

2020 ◽  
Vol 28 (1) ◽  
pp. 31
Author(s):  
Semangat Marudut Tua Debataraja ◽  
Jubel Pardede
Keyword(s):  
Carrying Capacity ◽  
Soil Classification ◽  
Test Results ◽  
Plastic Limit ◽  
Temperature Changes ◽  
Sand Mixture ◽  
Stabilized Soil ◽  
Group A ◽  
Test Soil ◽  
Unstable Type

The problem of the level of influence of soil carrying capacity is one of the things needed to be considered in a planning and work of a civil construction. This is because the soil serves as a medium that withstands the load or action of the construction built on it. Stabilization using sand materials is one way to meet the necessary power requirements. Weather and temperature changes in the field are factors making the ground unstable. Type of stabilized soil is silt originating from jl.Pancasila Batangkuis Regency Deliserdang. This research was conducted using mixed sand with mixed variations of 25%, 40%, 55% and 65%. Then, DST testing and Index properties were done for each sample. Based on the results of this test the soil obtained classification According to AASHTO criteria that is that this land including silt land or with a general assessment as the soil very well up to very well. This is because the plasticity (PI) of the soil sample is 8.69 <10% (max 10) and the plastic limit (PL) is 19.18% <30% and (LL) 27.87% <40% so it is included in group A-2 -4. According to the criteria of USCS (1982), based on the results of the test, soil classification obtained is a type of soil sand (LL) 8.69% <50% so it includes the ML cohort. The increase of soil bearing capacity based on test results by modeling with square foundation is as follows: Original soil qu = 6.46 t / m², Sand Supplement 25% = 6,665 t / m², Sand Supplement 40% = 9,888 t / m², Sand Supplement 55 % = 12,231 t / m², Sand Supplement 65% = 12,273 t / m² and for the foundation of path shape are: Original soil qu = 5,140 t / m², Sand Supplement 25% = 5,175 t / m², Sand Supplement 40% = 7,776 t / m², Sand Supplement 55% = 9,918 t / m², Sand Additional 65% = 14,870 t / m². The more variation of the added sand mixture results in decreasing moisture content which will make the soil carrying capacity increase.

scholarly journals PENGARUH PENAMBAHAN ABU AMPAS TEBU & ARANG BATOK KELAPA TERHADAP STABILISASI DAYA DUKUNG TANAH

2020 ◽  
Vol 3 (1) ◽  
pp. 119
Author(s):  
Alfinda Threvanian Putri ◽  
Sigit Winarto ◽  
Ahmad Ridwan
Keyword(s):  
Carrying Capacity ◽  
Soil Structure ◽  
Soil Stabilization ◽  
Clay Soil ◽  
Liquid Limit ◽  
Coconut Shell ◽  
Soil Conditions ◽  
Soil Stability ◽  
Plastic Limit ◽  
Project Site

Each region has soil conditions that are not the same as other regions, some have good soil carrying capacity, and some are bad. The soil stabilization process involves mixing the soil with other soils to obtain the desired gradation. Stabilization is carried out if the land at the project site does not meet the requirements when used for engineering certain buildings. In the study of clay soil tested came from Jampi Hamlet of Ngentrong Village, Karangan District, Trenggalek Regency - East Java Province, the method of a mixture of bagasse ash and coconut shell charcoal consisted of 4 variations, each using a different mixture content ie 0%, 7%, 10%, and 15%, This research was conducted at the Civil Engineering Laboratory of Kadiri University. The results of the study showed that the addition of a mixture of bagasse ash and coconut shell charcoal affected soil stability. At a percentage of 15%, it produces a liquid limit of 39%, a plastic limit of 28.38%, a plastic index of 10.62%, the addition is able to improve soil properties, given that the original soil structure has a higher level of plasticity.Setiap daerah memiliki kondisi tanah yang tidak sama dengan daerah lainnya, ada yang mempunyai kondisi daya dukung tanah yang baik dan ada pula yang buruk. Proses stabilisasi tanah meliputi pencampuran tanah dengan tanah lain untuk memperoleh gradasi yang diinginkan. Stabilisasi dilakukan bila tanah di lokasi proyek tidak memenuhi syarat bila digunakan untuk rekayasa bangunan tertentu. Pada penelitian tanah lempung yang diuji ini berasal dari Dusun Jampi Desa Ngentrong Kec.Karangan Kab.Trenggalek – provinsi Jawa Timur, metode campuran abu ampas tebu dan arang batok kelapa terdiri dari 4 variasi, masing-masing mengggunakan kadar campuran yang berbeda yaitu 0%,7%, 10%, dan 15%, Penelitian ini dilaksanakan di Laboratorium Teknik Sipil Universitas Kadiri. Hasil uji penelitian menunjukkan bahwa penambahan campuran abu ampas tebu dan arang batok kelapa berpengaruh terhadap stabilitas tanah. Pada presentase 15% mengahasilkan batas cair 39%, batas plastis 28,38 %, indeks plastis 10,62%, penambahan tersebut mampu memperbaiki sifat tanah, mengingat bahwa struktur tanah asli memiliki tingkat keplastisan yang lebih tinggi.

scholarly journals Efektivitas Injeksi Larutan Kapur untuk Menurunkan Plastisitas Tanah Lempung sebagai Upaya Mengatasi Kerusakan Jalan Raya

2012 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Sumiyanto Sumiyanto ◽  
Arwan Apriyono
Keyword(s):  
Liquid Limit ◽  
Plasticity Index ◽  
High Plasticity ◽  
Expansive Clay ◽  
Test Results ◽  
Effective Parameters ◽  
Soil Plasticity ◽  
Lime Solution ◽  
High Plasticity Clay ◽  
Time Required

<p>Highway built on high plasticity clay will be easily damaged by groundshrinkage flower essence. Stabilization of clayby mixing lime is a repairement method that has been proven quite effective. However, this method is difficult to be applied in existing  road because demolition must be done. Stabilization of clay using lime solution injection is the method proposed toovercome the  problems of expansive clay under the existing highway, therefore demolition is not required. This study was conducted to obtain  effective parameters influencing the distance lime solution injection sites and time required for complete stabilization process. This research was conductedin labotarorium by injection experiments. Test results shows indications of soil plasticity decrease, especially  the value of plasticity index (PI) and liquid limit (LL). PI decreases from 24.74% to 19.5% and LL decrease from 52.32% to 45%. Based on data analysis it appears that the time required for complete lime solution injection (effective time) has not been obtained in  this test. Based on test data, until the day 28 value of soil plasticity index is still low. In this study obtained effective distance influencing the injectionsolution of lime is 100 cm. The distance is still need to be enlarged by increasing the high pressure.</p>

The Research on the Liquid Plastic Limit of Completely Weathered Granite Improved Soil

2013 ◽  
Vol 639-640 ◽  
pp. 700-703
Author(s):  
Wen Yi ◽  
Yong He Wang ◽  
Zi Xin Xie ◽  
Chang Zi Qu
Keyword(s):  
Liquid Limit ◽  
Plasticity Index ◽  
Plastic Limit ◽  
Soil Plasticity ◽  
Weathered Granite ◽  
Before And After ◽  
Mechanics Characteristic ◽  
Ratio Condition ◽  
Completely Weathered Granite ◽  
Over Time

In this paper, we studied mechanics characteristic of whole weathered granite improved soil. We analysesed its changes of fluid plasticity index before and after improvement in different compaction condition. We improved the full weathering granite by adding different proportion of lime and cement. We analysised the changes of liquid limit and plastic limit of improved soil in the different mixed ratio condition and we got the conclusion that the improved soil plasticity index decreased with lime or cement dosage increases, also changed over time. Improved soil liquid limit, plastic limit and plasticity index changed with the addition of lime, cement dosage changes exponentially.

scholarly journals Compressibility behaviour of remoulded, fine-grained soils and correlation with index properties

2000 ◽  
Vol 37 (3) ◽  
pp. 712-722 ◽  
Author(s):  
A Sridharan ◽  
H B Nagaraj
Keyword(s):  
Liquid Limit ◽  
Plasticity Index ◽  
Engineering Properties ◽  
Test Results ◽  
Index Properties ◽  
Initial Water ◽  
Fine Grained ◽  
Wide Range ◽  
The Relationship ◽  
Water Contents

Correlating engineering properties with index properties has assumed greater significance in the recent past in the field of geotechnical engineering. Although attempts have been made in the past to correlate compressibility with various index properties individually, all the properties affecting compressibility behaviour have not been considered together in any single study to examine which index property of the soil correlates best with compressibility behaviour, especially within a set of test results. In the present study, 10 soils covering a sufficiently wide range of liquid limit, plastic limit, and shrinkage limit were selected and conventional consolidation tests were carried out starting with their initial water contents almost equal to their respective liquid limits. The compressibility behaviour is vastly different for pairs of soils having nearly the same liquid limit, but different plasticity characteristics. The relationship between void ratio and consolidation pressure is more closely related to the shrinkage index (shrinkage index = liquid limit - shrinkage limit) than to the plasticity index. Wide variations are seen with the liquid limit. For the soils investigated, the compression index relates better with the shrinkage index than with the plasticity index or liquid limit.Key words: Atterberg limits, classification, clays, compressibility, laboratory tests.

scholarly journals Pengaruh Penggunaan Pasir Putih Sebagai Bahan Tambah Untuk Stabilisasi Tanah Desa Bangkuang Kabupaten Barito Selatan

2019 ◽  
Vol 3 (2) ◽  
pp. 1-7
Author(s):  
Syahdi Syahdi ◽  
Muhammad Suhaimi
Keyword(s):  
Moisture Content ◽  
Soil Properties ◽  
Liquid Limit ◽  
Optimum Moisture Content ◽  
Plasticity Index ◽  
Dry Density ◽  
Maximum Dry Density ◽  
White Sand ◽  
Research Activities ◽  
The Many

Tanah merupakan salah satu dari sekian banyak material yang bervariasi (heterogen) antara satu lokasi dengan lokasi yang lain., maka dalam penelitian ini melakukan penambahan material pasir putih yang kemudian dicampurkan dengan tanah asli yang berasal dari desa Bangkuang Kecapamatan Karau Kuala Kabupaten Barito selatan. Kegiatan penelitian dilakukan di laboratorium Geoteknik dan Transportasi Politeknik Negeri Banjarmasin meliputi beberapa metode pungujian dilakukan sesuai dengan standar penelitian yaitu: SNI 03-1965-2008, SNI 03-1964-2008, SNI 03-1967-2008, SNI 03-1965-2008,SNI 03-1743-2008 SNI 03-1738-2011, dan SNI 2828:2011.  Hasil penelitian, dengan penambahan pasir putih sangat berpengaruh terhadap perbaikan sifat – sifat tanah yang akan digunakan untuk bahan stabilisasi subgredre,   maka didapat nilai sifat-sifat tanah diberi bahan pasir putih (0%) meliputi; kadar air (W) 23,87%, berat jenis (Gs) 2,59, batas cair (LL) 33,9%, batas plastis (PL) 20,11%, plastisitas indeks (PI) 13,79%, kadar air optimum (OMC) 18,6%, kepadatan kering maksimum (dMax) 1,61 Gr/Cm3 dan CBR desain 5%. Nilai sifat-sifat tanah diberi bahan tambah pasir putih. Nilai sifat-sifat tanah diberi bahan tambah pasir putih (15%) meliputi; berat jenis gabungan (Gs) 2,62, batas cair (LL) 29,6%, batas plastis (PL) 19,52%, plastisitas indeks (PI) 10,08%, kadar air optimum (Omc) 81,5%, kepadatan kering maksimum (dMax)) 1,54 Gr/Cm3 dan CBR desain 6,1%, berat isi kering (d) 1,538 gr/cm³. Abstract Land is one of the many varied material (heterogeneous) between one site and another location., then in this research performs addition material of white sand is then blended with the native soil that comes from the village of Karau Kuala Kecapamatan District Bangkuang Barito South. Research activities carried out in the laboratory of Geotechnical and transportation State Polytechnic Banjarmasin includes several methods of pungujian conducted in accordance with the standards of research, namely: in accordance with the SNI 03-1965-2008, SNI 03-1964-2008, SNI 03-1967-2008, SNI 03-1965-2008, SNI 03-1743-2008, SNI 03-1738-2011, and SNI 2828:2011. Results of the study, with the addition of white sand is very influential towards the improvement of the nature – nature of the land to be used for subgredre stabilization materials, then obtained the value soil properties are given materials white sand (0%) include; moisture content (W) 23.87%, heavy types (Gs) 2.59, liquid limit (LL) 33.9%, limits plastis (PL) 20.11%, plasticity index (PI) 13.79%, optimum moisture content (OMC) 18.6%, maximum dry density (/dMax) 1.61 Gr/Cm3 and CBR design 5%. The value soil properties are given the added ingredient of white sand. The value soil properties are given the added ingredient of white sand (15%) include; the weight of the combined type (Gs) 2.62, liquid limit (LL) 29.6%, limits plastis (PL) 19.52%, plasticity index (PI) 10.08%, optimum moisture content (Omc) 81.5%, maximum dry density (/dMax)) 1.54 Gr/Cm3 and CBR design 6.1%, weight dry (/d) 1.538 gr/cm ³.

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.

Sign in / Sign up

Export Citation Format

Share Document