scholarly journals Effects of High Plasticity and Expansive Clay Stabilization with Lime on UCS Testing in Several Conditions

2021 ◽  
Vol 1000 (1000) ◽  
Author(s):  
Soewignjo Agus Nugroho ◽  
Gunawan Wibisono ◽  
Andarsin Ongko ◽  
Avrilly Zesthree Mauliza
Keyword(s):  
Soil Stabilization ◽  
Soft Soil ◽  
Fine Powder ◽  
High Water ◽  
Liquid Limit ◽  
Clay Soils ◽  
High Water Content ◽  
High Plasticity ◽  
Expansive Clay ◽  
Limit Value

Clay is a cohesive and very soft soil if it has high water content. To overcome this problem, clay soils with high plasticity need to be stabilized. The method of soil stabilization with lime is an alternative effort to improve soil that does not meet the standards. Lime reacts with groundwater so that it changes the property of the soil, reducing the stickiness and softness of the soil. Lime also functions to solidify (stabilize) and stabilize (stabilize) soil in the form of fine powder consisting of metals and inorganic mineral composition. This study aims to determine the effect of clay soils when carried out stabilization by using a limestone additive which varies in levels of mixture. The results showed that lime effective for the stabilization high plasticity and expansive clay by increasing the compressive strength value of UCS with lime content of 10% under curing conditions in 28 days and unsoaked by 319%, the liquid limit value reduced by 6% and the plastic limit value increased by 46%.

scholarly journals Geotechnical properties of reinforced clayey soil using nylons carry’s bags by products

2018 ◽  
Vol 162 ◽  
pp. 01020 ◽  
Author(s):  
Nahla Salim ◽  
Kawther Al-Soudany ◽  
Nora Jajjawi
Keyword(s):  
Soil Stabilization ◽  
Clayey Soil ◽  
Ground Improvement ◽  
Soft Soil ◽  
Liquid Limit ◽  
Waste Material ◽  
Industrial Wastes ◽  
Dry Density ◽  
Maximum Dry Density ◽  
Replacement Technique

All structures built on soft soil may experience uncontrollable settlement and critical bearing capacity. This may not meet the design requirements for the geotechnical engineer. Soil stabilization is the change of these undesirable properties in order to meet the requirements. Traditional methods of stabilizing or through in-situ ground improvement such as compaction or replacement technique is usually costly. Now a safe and economic disposal of industrial wastes and development of economically feasible ground improvement techniques are the important challenges being faced by the engineering community. This work focuses on improving the soft soil brought from Baghdad by utilizing the local waste material for stabilization of soil, such as by using “Nylon carry bag’s by product” with the different percentage and corresponding to 1 %, 3% and 5% (the portion of stabilizer matters to soil net weight) of dried soil. The results indicated that as Nylon’s fiber content increases, the liquid limit decreases while the plastic limit increases, so the plasticity index decreases. Furthermore, the maximum dry density decreases while, the optimum moisture content increases as the Nylon’s fiber percentage increases. The compression index (decreases as the Nylon’s fiber increases and provides a maximum of 43% reduction by adding 5% nylon waste material. In addition, the results indicated that, the undrained shear strength increases as the nylon fiber increases.

scholarly journals The Alternatives to Traditional Materials for Subsoil Stabilization and Embankments

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3018 ◽  
Author(s):  
Mirjana Vukićević ◽  
Miloš Marjanović ◽  
Veljko Pujević ◽  
Sanja Jocković
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Power Plants ◽  
Soil Stabilization ◽  
Soft Soil ◽  
Physical And Mechanical Properties ◽  
Engineering Properties ◽  
High Plasticity ◽  
Natural Materials ◽  
Positive Effects

Major infrastructure projects require significant amount of natural materials, often followed by the soft soil stabilization using hydraulic binders. This paper presents the results of a laboratory study of alternative waste materials (fly ash and slag) that can be used for earthworks. Results of high plasticity clay stabilization using fly ash from Serbian power plants are presented in the first part. In the second part of the paper, engineering properties of ash and ash-slag mixtures are discussed with the emphasis on the application in road subgrade and embankment construction. Physical and mechanical properties were determined via following laboratory tests: Specific gravity, grain size distribution, the moisture–density relationship (Proctor compaction test), unconfined compressive strength (UCS), oedometer and swell tests, direct shear and the California bearing ratio (CBR). The results indicate the positive effects of the clay stabilization using fly ash, in terms of increasing strength and stiffness and reducing expansivity. Fly ashes and ash-slag mixtures have also comparable mechanical properties with sands, which in combination with multiple other benefits (lower energy consumption and CO2 emission, saving of natural materials and smaller waste landfill areas), make them suitable fill materials for embankments, especially considering the necessity for sustainable development.

scholarly journals PEMANFAATAN LAHAN BEKAS TEMPAT PEMBUANGAN AKHIR DENGAN STABILISASI TANAH SECARA KIMIAWI

2021 ◽  
Vol 4 (1) ◽  
pp. 183
Author(s):  
Satya Bodhinanda ◽  
Aniek Prihatiningsih
Keyword(s):  
Sodium Hydroxide ◽  
Inorganic Material ◽  
Soil Stabilization ◽  
High Water ◽  
Shallow Foundation ◽  
High Water Content ◽  
Structure Model ◽  
Foundation Base ◽  
Load Location

Landfill soil (TPA) has great potential of utilization in construction purpose. Landfill soil has similar characteristic with clay soil that has high water content also contain organic and inorganic material caused by garbage heap. One of the problem in utilizing landfill soil was the low quality of the soil that cause big settlement for the structure. Settlement was an important aspect in performing a construction. Soil stabilization for the landfill soil needed to decrease amount of settlement. Structure model using one, two, three, four floor of load and calculate the settlement occur on the heaviest load location of the foundation. Foundation base was circle and using shallow foundation reconsidering shallow foundation effective for four floor load. Chemical stabilization using 2 methods: Sodium Hydroxide 6% and Limestone 3-4,5%. Based on the calculation, found that Sodium Hydroxide is more effective in decreasing settlement occurred and able to decrease the settlement until 32,42% for the  floor load. However, those methods can’t fulfil the 15 cm settlement limit. Tanah bekas tempat pembuangan akhir (TPA) memiliki potensi besar untuk dimanfaatkan dalam bidang konstruksi. Tanah bekas TPA umumnya memiliki karakteristik serupa dengan tanah lempung berkadar air serta memiliki material organik dan anorganik dari timbunan sampah. Salah satu masalah dalam memanfaatkan tanah bekas TPA adalah rendahnya kualitas tanah yang mengakibatkan penurunan besar pada struktur. Perbaikan pada tanah bekas TPA diperlukan untuk mengurangi besarnya penurunan yang terjadi. Penurunan merupakan aspek penting dalam suatu perancangan konstruksi, maka dari itu batasan pada penurunan ditetapkan untuk menghindari penurunan yang berlebihan yang dapat merusak struktur. Permodelan menggunakan beban struktur 1,2,3, dan 4 lantai dan dihitung penurunan yang terjadi pada fondasi dengan beban struktur terbesar. Penampang fondasi berbentuk lingkaran mempertimbangkan beban percobaan hingga 4 lantai cocok untuk fondasi dangkal. Stabilisasi tanah secara kimiawi menggunakan 2 metode yaitu Sodium Hidroksida 6% dan batu kapur 3-4,5%. Berdasarkan hasil perhitungan, didapati stabilisasi menggunakan Sodium Hidroksida lebih efektif dalam mengurangi penurunan tanah yang terjadi dan mampu mengurangi besarnya penurunan hingga 32,42% pada beban struktur 4 lantai. Namun, stabilisasi tanah menggunakan kedua metode belum dapat mencapai batas aman penurunan sebesar 15 cm.

scholarly journals STUDI SIFAT MEKANIS TANAH MERAH DENGAN PENGUJIAN TRIAKSIAL

2018 ◽  
Vol 7 (1) ◽  
pp. 29-34
Author(s):  
Redaksi Tim Jurnal
Keyword(s):  
Shear Strength ◽  
Soil Type ◽  
Clay Soil ◽  
Soft Soil ◽  
Soft Clay ◽  
Liquid Limit ◽  
Red Soil ◽  
Triaxial Tests ◽  
Limit Value ◽  
Triaxial Apparatus

Characteristics soft soil can cause instability and long-term degradation problems. This is because the soil has a low shear strength value and high compressibility. One type of soil belonging to the soft soil type is soft clay soil. Red soil belongs to the soft clay soil type. Therefore, the purpose of this research to determines the parameters of the shear strength of red soil in the area of Pakjo City Palembang, South Sumatra Province. The equipment had been used to obtain parameters of mechanical properties of red soil was using Triaxial apparatus. The results of the red soil properties index include: water content value (□ 27.70%, specific gravity value (Gs) 2.67, liquid limit value (LL) 66.00%, value of plastic limit of 25.13% and index value (IP) of 40.87% Classification of soil CH (USCS) and A-7-6 (AASHTO). The result of the Triaxial tests was the value of cohesion (c): 16.25-18, 15 kPa, and internal friction (□): 13.50-14.75⁰. The result of shear strength (□) : 17.68-24.02 kPa. The shear strength value of red soil indicates soil which includes soft soil (12.5-25 kPa).

scholarly journals The effect of the addition of limestone from Khor Eit on soil stabilization of Omdurman.

2021 ◽  
pp. 140-151
Author(s):  
Amna Mubarak Mohamed Elhag
Keyword(s):  
Soil Properties ◽  
Soil Stabilization ◽  
Field Work ◽  
Liquid Limit ◽  
Expansive Clay ◽  
Gis And Remote Sensing ◽  
Index Reduction ◽  
Digital Format ◽  
Remote Sensing Techniques ◽  
Clay Type

The present investigation considered the damages arising from the expansive clay type in the presence of water in Omdurman –Sudan.Geographic Information System (GIS), and Remote Sensing techniques were used to map the geotechnical parameters and accurately locate the problematic clay zones.Soil samples recovered from the Bore Holes and Trial Pits in Al muhandessen, Elbustan, Alarda, Bit Almal and Almulazmeen, during the field work carried out in August 2018 were studied using standard Geotechnical Laboratory methods. The liquid limit varies between 50% and 65%.The samples locations were determined using the Global Positioning System (GPS). The thematic mapper 2000Tm was used for mapping the soil properties in Digital format using ERDAS Imaging 8.5 integrated with other software such as Arc Map. Modeling of the problematic soil was carried out also.The results of the geotechnical data show that montomorillonite and Illite are the dominant high expansive clay type with thickness ranging from one to three meters.The limestone collected from Khor Eit North of Port Sudan, was studied chemically and Calcined at 900°C and slaked to get lime. (10 - 20%) of the lime was added to the sample soil with compaction, results in enhancement of the soil properties, reduction of the plasticity index, reduction of clay activity and hence stabilization of the soil.

Experimental Research of Soft Soil Ground Treatment in Yangpu Port by Static-Dynamic Drainage Consolidation

2013 ◽  
Vol 353-356 ◽  
pp. 203-207
Author(s):  
Yong Kang Yang ◽  
Wu Yang ◽  
Chun Yan Feng
Keyword(s):  
Pore Water Pressure ◽  
Water Pressure ◽  
Soft Soil ◽  
Drainage System ◽  
Physical And Mechanical Properties ◽  
High Water ◽  
Surface Settlement ◽  
High Water Content ◽  
Engineering Practice ◽  
Ground Treatment

Yangpu Port has inhomogeneous soft soil with the properties of high water content, high void ratio, high compressibility and low shear strength. Based on soft soil ground treatment engineering practice, the geological characteristics are summarized, the ground treatment methods are comparatively analyzed, static-dynamic drainage consolidation method is chosen to treat the soft soil ground, the reinforcing mechanism of vertical and horizontal drainage system are discussed, the design of drainage system, preloading and dynamic consolidation are researched and the surface settlement monitoring, pore water pressure monitoring, side piling displacement monitoring, laboratory soil test and plate loading tests are carried out. The results show that average surface settlement is 1170.8 mm, the physical and mechanical properties of soft soil are improved and the characteristic value of foundation bearing capacity is greater than 120kPa.

Characterization and Effective Utilization of Volcanic Ash for Soil Improvement

2012 ◽  
Vol 248 ◽  
pp. 292-297 ◽  
Author(s):  
Ahmad Rifa’i ◽  
Noriyuki Yasufuku ◽  
Kiyoshi Omine
Keyword(s):  
Volcanic Ash ◽  
Soil Stabilization ◽  
Early Stage ◽  
Soft Soil ◽  
Physical And Mechanical Properties ◽  
Soil Improvement ◽  
Liquid Limit ◽  
Engineering Properties ◽  
Engineering Practice ◽  
Effective Utilization

Volcanic ash becomes environmental important issues as waste material if it is not effectively reduced or reused. In engineering practice, utilization of volcanic ash as substitution material is limited. Indonesia has a large road on soft soil and volcanic ash. The objectives of this paper are focused to study the characterization, classification and utilization of volcanic ash as soil stabilization material which give benefit in engineering practice and also be environmental friendly material. Engineering properties, mineral composition and soil mixture characteristics involve physical and mechanical properties are discussed. Result shows that the effect of addition of volcanic ash after curing time 14 days can improve the engineering properties of soft soil, decrease liquid limit, change curve of grain size distribution, increase bearing capacity, and decrease swelling potential. The soil-volcanic ash mixture with 35% of volcanic ash and 5% of lime is obtained as optimum mixture design. This result is still early stage and need further study.

A Discussion of the Stability of Foundation Pit or Slope with Soft Interlayer or with Back Berm

2014 ◽  
Vol 1065-1069 ◽  
pp. 96-99
Author(s):  
Hai Ying Hu ◽  
Xiao Wen Zhou ◽  
Zhi Xing Huang
Keyword(s):  
Bearing Capacity ◽  
Soft Soil ◽  
High Water ◽  
High Water Content ◽  
Sliding Surface ◽  
Foundation Pit ◽  
Soft Interlayer ◽  
The Difference ◽  
The Stability ◽  
Slice Method

The soft soil in Pearl River Delta regions is characterized with high water content, high compressibility and low bearing capacity. Therefore, when building the structures on such foundation, it’s necessary to pay attention to the deformation and stability. The projects' practice shows that, when analyzing the stability on foundation pit or slope with soft interlayer, it should not only calculate the overall stability of the slope, but also calculate the stability or bearing capacity of the foundation. Although sometimes the stability of the slope meets the requirements, it doesn’t means that the bearing capacity of the foundation meets the requirements because of the existence soft interlayer, the limitations of the circle slice method and the difference between the sliding surface and the actual sliding surface.

Numerical Analysis of Soft Soil Ground Consolidation Settlement

2014 ◽  
Vol 638-640 ◽  
pp. 503-506 ◽  
Author(s):  
Jin Fang Hou ◽  
Ju Chen ◽  
Xiao Qiang Kou
Keyword(s):  
Numerical Analysis ◽  
Soft Soil ◽  
High Water ◽  
High Water Content ◽  
Surcharge Preloading ◽  
Open Sea ◽  
Consolidation Settlement ◽  
Calculation Results ◽  
Settlement Property ◽  
Under Construction

An artificial island under construction is located at an open sea and constructed by such a way that island walls are composed of steel cofferdams inserted into impermeable layers and then filled with sands. Grounds on the island are covered by thick soft soil layers with high water content, large compressibility and low bearing capacity, and treated by a jointed dewatering surcharge preloading method. In order to know the settlement property of the soft soil ground, the numerical analysis is implemented. During the analyzing, the parameters are adjusted and calculated through inverse analysis compared with practical measured data. So the numerical calculation results are more reliable. The analysis results indicate that the residual settlement of the soft soil ground is 9cm, and main ground consolidation settlement will be completed for two years after construction finished.

scholarly journals MENINGKATKAN NILAI CBR TANAH SUB-GRADE DENGAN STABILISASI TANAH KAPUR

2019 ◽  
Vol 13 (1) ◽  
pp. 50
Author(s):  
Moch Sholeh ◽  
Yunaefi Yunaefi
Keyword(s):  
Road Construction ◽  
Soil Improvement ◽  
Clay Soils ◽  
Dry Density ◽  
Chemical Stabilization ◽  
High Plasticity ◽  
Expansive Clay ◽  
A Value ◽  
Poor Soil ◽  
Low Shear

Poor soil properties and disadvantage when used as the basis of a building or road construction, including high plasticity, low shear strength, large volume or density changes and large shrinkage potential. Various methods are used to improve the strength of expansive clay soils, including by adding chemicals (chemical stabilization). Soil improvement that has been done is to mix the soil with lime, but only to review the dry density (γd). The purpose of this study is to explain the effect of adding lime to the soil on increasing CBR values, swelling, and knowing the optimum lime percentage in order to obtain maximum CBR and minimum swelling values. The results of the original soil swelling test showed a value of 9.14%, with the addition of lime percentage the swelling value showed a decrease. From the results of the addition of lime percentage showed the greatest decrease occurred in the addition of lime by 12% that is equal to 70.35%. So it can be concluded with the addition of lime will improve the original soil because it can reduce the value of swelling

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