An experimental investigation on geotechnical properties of a clayey soil stabilised with lime and zeolite in base and subbase courses

2021 ◽  
pp. 1-18
Author(s):  
Aghileh Khajeh ◽  
Reza Jamshidi Chenari ◽  
Hossein MolaAbasi ◽  
Meghdad Payan
Keyword(s):  
Experimental Investigation ◽  
Clayey Soil ◽  
Geotechnical Properties

scholarly journals Geotechnical Evaluation of Diesel Contaminated Clayey Soil

2021 ◽  
Vol 11 (14) ◽  
pp. 6451
Author(s):  
Christian E. Hernández-Mendoza ◽  
Pamela García Ramírez ◽  
Omar Chávez Alegría
Keyword(s):  
Contaminated Soils ◽  
Clayey Soil ◽  
Friction Angle ◽  
Geotechnical Properties ◽  
Natural Soil ◽  
Osmotic Suction ◽  
The One ◽  
Available Information ◽  
The Impact ◽  
Diesel Contamination

Soil contamination by different hydrocarbons has rapidly expanded worldwide, surpassing the self-purification capacity of soils and increasing the number of contaminated sites. Although much effort has been devoted to study the effects of diesel contamination on the geotechnical properties of soil, there is still limited available information about it. Moreover, there is no available information about the maximum diesel retention that soil can have and its effect on the geotechnical behavior of the soil. Thus, in this paper, we determined the maximum diesel retention by an unsaturated clayey soil and evaluated the impact of diesel contamination on its geotechnical properties. The results showed that the soil could only retain 12.6% of the added diesel and the excess was expulsed. At such a diesel concentration, the saturation rate of the soil was lower than 80%. Diesel contamination increased the plasticity and the internal friction angle of the soil, while its cohesion was considerably decreased. It should be noted that the matric suction of contaminated soil was lower than the one obtained for natural soil. However, its osmotic suction was considerably higher. This indicates that osmotic suction must be considered to evaluate the shear strength of contaminated soils.

scholarly journals Geotechnical Properties of Clayey Soil Contaminated with Copper

2019 ◽  
Vol 26 (1) ◽  
pp. 74-80
Author(s):  
Mahdi O. Karkush ◽  
Shahad D. Ali
Keyword(s):  
Copper Sulfate ◽  
Fine Particles ◽  
Clayey Soil ◽  
Physical And Mechanical Properties ◽  
Cohesive Soil ◽  
Geotechnical Properties ◽  
Oil Field ◽  
Dry Density ◽  
Unconfined Compression Test ◽  
Intact Soil

In this research, the effectsof coppersulfate contamination on the chemical, physical and mechanical properties of cohesive soil have been studied and compared with the properties of intact soil. Soil sampleswere obtained from Al-Ahdab oil field in Wasit governorate, located in the east of Iraq. In the laboratory, the soil specimens were contaminated artificiallywith three quantities of copper sulfate) CuSO4.5H2O) (100, 200 and 400) gm. The contaminantwas dissolved in 10 liters of distilled water and then added to the intact soil. The intact soil samplekept soaked with the contaminantfor 30 days. Several tests were conducted onthe soil samples (intact and contaminated) to measure the effects of copper sulfate on the geotechnical properties of clayey soil. The results of tests showed significant effectsfor copper on the studied soil properties. The copper sulfate causesdecreasing the percentage of fine particles in the soil, Atterberg s limits, permeability and optimum water content. Inaddition, the copper sulfate causes increasing thespecific gravity andmaximum dry density of soil. The shear strength parameters of soil are measured by using direct shear test, unconfined compression test and unconsolidated undrained triaxial test are decreased with increasing the concentration of copper sulfate in soil. Also, its noted increasing the initial void ratio, the compression index and recompression index with increasing concentration of contaminant in soil.

scholarly journals Influence of Kawergosk Refinery Waste Oil on Geotechnical Properties of Contaminated Clayey Soil

2019 ◽  
Vol 9 (1) ◽  
pp. 64-73
Author(s):  
Ferzand K. Medhat ◽  
Mehmet Carpuzcu ◽  
Ali Firat Cabalar ◽  
Ahmed Al-Obaidi
Keyword(s):  
Clayey Soil ◽  
Considerable Effect ◽  
Soil Samples ◽  
Geotechnical Properties ◽  
Dry Density ◽  
Clayey Soils ◽  
Waste Oil ◽  
Refinery Waste ◽  
Test Parameters ◽  
Laboratory Test Results

This study presents the effect of Kawergosk refinery waste oil on the geotechnical properties of Erbil clayey soils. A comparison of laboratory test results on uncontaminated clayey soils has been presented and examined. Refinery waste oil of Kawergosk (20 km west of Erbil city) was chosen as the contaminant. A disturbed soil samples were collected from the site which are remolded in the laboratory before each test to represent the field dry density (1.4 gm/cm3, 5.6% water content). Laboratory investigations were carried out on soil samples with 5%, 10%, 15%, and 20% of the waste oil, the results showed a considerable effect on the chemical soil characteristics, while a slight increase of the values of Atterberg limits was observed. A considerable effect on the values of one-dimensional consolidation test parameters has also been observed; the same observation has been seen for the values of direct shear test parameters. A reduction on the values of conductivity coefficient, K has been noticed with increase of contaminated percentage.

scholarly journals Partial Replacement Effect of Firewood Ash (FWA) on the Geotechnical Properties of Clay Stabilized with Cement

2020 ◽  
Vol 16 (2) ◽  
pp. 289-298
Author(s):  
Musab Sabah Abed
Keyword(s):  
Portland Cement ◽  
Ordinary Portland Cement ◽  
Clayey Soil ◽  
Activity Index ◽  
Geotechnical Properties ◽  
Partial Replacement ◽  
Experimental Program ◽  
Replacement Level ◽  
Compressive Test ◽  
Modes Of Failure

AbstractWith the intention of providing a balance between the disposal of wastes generated from incineration processes and mitigate the emissions from industrial activities, the reuse of incineration waste as alternatives to conventional binders would offer a sustainable solution to reduce their environmental impact. This study aims to experimentally investigate the effect of firewood, ash (FWA) and ordinary Portland cement on some of the geotechnical properties of low plastic clayey soil (CL). The experimental program was introduced by partial replacement of ordinary Portland cement with firewood ash (FWA) up to 10 % with an increment of 2 %. A series of unconfined compressive test (UCT) and Atterberg limits test were performed. The results indicate that plasticity characteristics are affected by the addition of both cement and (FWA). Also, the results showed that the unconfined compressive strength increases for all replacement levels in comparison with the plain clay sample. The term deformability index (DI) also discussed with respect to different replacement level. The 70.61 % pozzolanic activity index indicates that (FWA) is a good pozzolan in accordance with ASTM C 618 specification. Finally, three modes of failure were detected which varying in accordance with the proportion of replacement.

scholarly journals Effect of Gravel Dust And Limestone Dust on Geotechnical Properties of Clayey Soil

2020 ◽  
Vol 23 (2) ◽  
pp. 194-205
Author(s):  
Hussein Hassan ◽  
◽  
Shaafan Taher ◽  
Sheyan Alyousify ◽  
◽  
...  
Keyword(s):  
Clayey Soil ◽  
Geotechnical Properties ◽  
Limestone Dust

scholarly journals Influence of Nano Silica on the Geotechnical Properties of Clayey Soil Stabilized with Lime

2018 ◽  
Vol 7 (1) ◽  
pp. 28-32
Author(s):  
R. Iswarya . ◽  
V. Satheeskumar .
Keyword(s):  
Soil Stabilization ◽  
Clayey Soil ◽  
Strength Properties ◽  
Geotechnical Properties ◽  
Curing Time ◽  
Nano Silica ◽  
Economic Issues ◽  
Stabilized Soil ◽  
Ucs Test ◽  
Properties Of Soil

The soil must be able to withstand the load and transfer it to ground within the range of allowable deformations, for which it must possess good physical and geotechnical properties. The conventional method of stabilization such as removal and replacement of ill – suited soils incur higher cost and is time consuming. A new method of stabilization, designated as chemical stabilization can be adopted. This method initiate chemical reactions such as cation exchange, pozzolanic activity etc., which consequently enhance the geotechnical properties of soil. In this study, the mechanical behavior of soil is improved by addition of nanoparticles i.e., nano silica along with cementitious material, lime. Considering economic issues of nano silica usage and results of this research in soil stabilization projects, in this study 0, 1, 3 and 5 % weight of nano silica is used as well as 0, 2 and 4 % weight of lime is used. The effect of these replacements is studied by Atterberg limits test, compaction test and unconfined compressive strength (UCS) test. The effect of curing time on samples at 3, 7 and 28 days of age has also been investigated. The optimum percentage replacement of nano silica in lime stabilized soil is determined. The microstructure of the stabilized soil is studied by Scanning electron microscopy (SEM) test. Thus the results proved that there is a significant improvement in the plasticity, compaction and strength properties with slight addition of nano silica in clayey soil mixed with lime.

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