Impacts of the El Dorado Ranch Park Fire on Geotechnical Properties of Soil

The present research work is carried out to predict the geotechnical properties (consistency limits, OMC, and MDD) of soil using AI technologies, namely regression analysis (RA), support vector machine (SVM), Gaussian process regression (GPR), artificial neural networks (ANNs), and relevance vector machine (RVM). The models of machine learning (SVM, GPR), hybrid learning (RVM), and deep learning (ANNs) are constructed in MATLAB R2020a with different configurations. The models of RA are built using the Data Analysis Tool of Microsoft Excel 2019. The input parameters of AI models are gravel, sand, silt, and clay content. The correlation coefficient is calculated for pair of soil datasets. The correlation shows that sand, silt, and clay content play a vital role in predicting soil's liquid limit and plasticity index. The performance of constructed AI models is compared to determine the optimum performance models. The limited datasets of soil are used in this study. Therefore, artificial neural networks and relevance vector machines could not perform well. Based on the performance of AI models, the Gaussian process regression outperformed the RA, SVM, ANNs, and RVM AI technologies. Hence, the GPR AI approach can predict the geotechnical properties of soil by gravel, sand, silt, and clay content. The Monte-Carlo global sensitivity analysis is also performed, and it is observed that the prediction of geotechnical properties of soil is affected by sand and clay content

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

Asian Journal of Engineering and Applied Technology ◽

10.51983/ajeat-2018.7.1.887 ◽

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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Study the Geotechnical Properties for Recent Deposits/AL-Fursan Area North of Tikrit

Tikrit Journal of Pure Science ◽

10.25130/j.v24i5.864 ◽

2019 ◽

Vol 24 (5) ◽

pp. 38

Author(s):

Salih Rakan Shalal ◽

Mohammed Rashid Abood ◽

Amera Ismail Hussain

Keyword(s):

Internal Friction ◽

Geotechnical Properties ◽

Silty Sand ◽

Engineering Properties ◽

Grain Size Analysis ◽

Size Analysis ◽

Test Results ◽

Cohesion Strength ◽

Area North ◽

Properties Of Soil

Four sites with different depth in AL-Fursan area/ North Tikrit city were selected for recent deposits sampling. The geotechnical properties of soil were tested and improvement of engineering properties of soil by cement was carried out. The geotechnical properties test results revealed that the moisture content ranges between (0.53 -1.45)% which is low because of sampling in summer season, while the grain size analysis show that the soil at the study area is coarse soil (sand) with fines. The soil type in the first site is clayey sand (SC), the second site contains sand with equal percentage of silt and clay (SC- SM) , the third and fourth site types are silty sand (SM). The specific gravity ranges between (2.46- 2.72) sites (1,2,3) are low liquid limit and low swelling index but the fourth site is moderate. The value of cohesion strength for the four sites are (16, 13, 1, 8)kPa respectively, sites (1) and (2) are moderate cohesion while sites (3) and (4) are non-cohesion, none plastic and un active. The low values of cohesion strength belongs to high percentage of coarse particles in the area. The values of internal friction angles ranges between (300- 370). The consolidation test results revealed that all sites were moderate compressive index except the first site which is low compressive and low swelling. The study area soil are neutral and high content of gypsum and soluble Dissolved salts and also high organic content. The soil improvement by cement tests results show increasing of cohesion and internal friction angle and the compaction test results show the samples are well sorted. http://dx.doi.org/10.25130/tjps.24.2019.087

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Assessment of Effect of Cassava Waste Water on Geotechnical Properties of Soil

International Journal of Engineering Research and ◽

10.17577/ijertv8is070383 ◽

2019 ◽

Vol V8 (07) ◽

Author(s):

Fawole T. G ◽

Keyword(s):

Waste Water ◽

Geotechnical Properties ◽

Properties Of Soil ◽

Cassava Waste

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Effect of PolyCom Admixture on Geotechnical Properties of Black Cotton Soil

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.e3210.018520 ◽

2020 ◽

Vol 8 (5) ◽

pp. 5280-5284

Keyword(s):

Clayey Soil ◽

Geotechnical Properties ◽

Black Cotton Soil ◽

Construction Costs ◽

The Past ◽

Shrinkage Cracks ◽

Soil Cement ◽

Time Period ◽

Permeability Increase ◽

Properties Of Soil

Over the past few years to stabilize the clayey soil which has been generally adopting these days in developing paved and unpaved roads, cement based products such as soil cement, and different kind of materials like lime are used. These additives being used in soil improves the strength, durability and workability of soil and generally it leads to a thickness reduction of the pavement layers. Regrettably, boundless amount of conventional additives are required to strengthen the soil used in pavements which leads to relatively long curing time. The compaction action should be completed within the stipulated time period, because which significantly affects the construction costs. The other disadvantages associated with cement stabilized layers can be the shrinkage cracks developed which reflect rapidly through asphaltic surfaces and cause greater deterioration. Therefore the development of polymeric based additives has been of particularly interest as they demonstrate many added advantages; such as their ability to reduce permeability, increase durability, allow non time depending during the mixing stage and provide increased flexibility. In this project PolyCom is being used as additive from the list of various Polymer Stabilization Materials. The advantage being selecting PolyCom as it does not create a chemical reaction and is not a rigid setting agent. Black cotton soil was taken in the analysis and it is added with PolyCom to find out the changes in the properties and from the inference of results it was observed that PolyCom addition enhances the Geotechnical properties of soil when compared to the black cotton soil used alone as a stabilized material.

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