Empirical Correlations for the Swelling Pressure of Expansive Clays in the City of Barranquilla, Colombia

Cantillo, Víctor; Mercado, Vicente; Pájaro, César

doi:10.15446/esrj.v21n1.60226

Cited by 14 publications

(14 citation statements)

References 9 publications

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“…e LL, PL, and SL are index properties used for classification of fine-grained soils and determine the mechanical behavior, i.e., shear strength, compressibility, and swell potential [27]. According to the experimental study by Cantillo et al [35], the Atterberg limits contribute very least statistical significance to estimation of P s as evidenced by conducting tests on 38 samples obtained from database of material parameters. "Free Swell Index" (FSI), a measure of FS, is the increase in soil volume without any external constraints when submerged in water.…”

Section: Identification and Characterizationmentioning

confidence: 99%

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Jalal

Jamhiri

et al. 2020

Advances in Materials Science and Engineering

109

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Calcium-based stabilizer materials (CSMs) exhibit pozzolanic properties which improve the properties of clayey soils by hydration, cation exchange, flocculation, pozzolanic reaction, and carbonation. In this comprehensive review, comprising over past three decades from 1990 to 2019, a mechanistic literature of expansive soil stabilization by incorporating CSMs is presented by reviewing 183 published research articles. The advantages and disadvantages of CSMs as the ground stabilizing agent are succinctly presented, and the major outcomes of physicochemical effects on soil properties are discussed in detail. After blending with CSM, the main and interaction effects on soil properties with focus on chemical processes such as X-ray fluorescence, X-ray diffraction analyses, and microstructure interaction by using scanning electron microscopy and thermogravimetric analysis have been reviewed in light of findings of past researchers. This work will help geotechnical engineers to opt for suitable CSM in the field of geoenvironmental engineering in committing to sustainable construction of civil engineering structures over expansive soils.

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Section: Identification and Characterizationmentioning

confidence: 99%

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Jalal

Jamhiri

et al. 2020

Advances in Materials Science and Engineering

109

View full text Add to dashboard Cite

show abstract

“…The investigation performed by [17] on the SP of various compacted ES placed at various initial water content (Wi) and dry unit weight confirms that the SP of compacted ES reduces when the initial water content increases (Wi). Further, the investigation conducted by [18] on semi-empirical correlations for the SS of heaving soils of Barranquilla, Colombia, reveals that the SP of compacted ES diminishes when the Wi increases. Nonetheless, at W OP , the SS increases when the Wi increases.…”

Section: Compactionmentioning

confidence: 99%

Stabilization of Expansive Soils Using Mechanical and Chemical Methods: A Comprehensive Review

Fondjo¹,

Theron²,

Ray³

2021

cea

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The presence of expansive soils on construction sites is problematic in geotechnical engineering. The swell-shrink behaviour makes these soils not suitable to be used in their natural state. The expansive soil damages cause financial loss yearly more than floods, hurricanes, tornadoes, and earthquakes combined. Moreover, the cost of cut to spoil of expansive soils during construction projects has continued to rise because of the high cost of earthworks, haulage, and the increasing scarcity of spoil areas because of the built environment. Nonetheless, a proper stabilization technique can significantly enhance the expansive soil's properties. The research project attempts to review, report the limits and merits of mechanical and chemical methods utilized to stabilize expansive soils in line with their efficiency, environmental concerns, and cost-effectiveness. A review of mechanical and chemical treatment techniques is conducted in this regard. Ultimately, each stabilization method exhibits its merits and limitations. The lack of standards for the treatment of swelling soils is a significant problem in engineering practice. Specialists in the domain of soil treatment must work together to obtain an optimized stabilization approach and protocol. Moreover, engineers should perform a geoenvironmental assessment appropriate for chemical stabilization methods and additives utilized. This research work contributes as a guideline in the selection and application of chemical and mechanical stabilization methods.

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“…The results are found to be in good concurrence with the experimental data and the data obtained from the literature for the same bentonite. However, several reports in the literature have shown reliable prediction of swelling stress using empirical and semiempirical models for compacted expansive soils [17][18][19]. In furtherance, some available predictive models are developed for different types of expansive soils, ranging from undisturbed, compacted, and laboratory-built expansive soils.…”

Section: Introductionmentioning

confidence: 99%

Validation of Semi-empirical Models for the Prediction of Swelling Stress for Compacted Unsaturated Expansive Soils

Ikechukwu¹,

Onyeka²

2021

cea

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Unsaturated swelling soil behaviour is governed by the matric suction, thus the predetermination of swelling stress for expansive unsaturated soil requires rigorous procedures. However, some swelling stress equations assume full saturation of the soil, which leads to the over-design of infrastructure. This study focused on the validation of predictive swelling stress models that correlate suction with other soil properties. Three models were developed, and independent data were used for the validation of the developed models. The predicted swelling stress values were compared to the values predicted by the randomly selected predictive models from the literature. Series of initial studies include the determination of basic soil characterization and swelling stress along with soil mineralogical compositions were conducted to determine their geotechnical properties with their corresponding degree of expansiveness. The replicated expansive soils were also studied for suction, using filter paper techniques to obtain the soil's unsaturated parameters. Based on the obtained experimental results, three models were developed using a mathematical software package (NCSS11). Independent data obtained from a group of final year students working on the swelling stress response of expansive unsaturated soils at the geotechnical engineering Laboratory from the University of Johannesburg were used for the validation. The developed models showed good agreement with the independent data, having a coefficient of determination (R 2 ) of 0.858, 0.931, and 0.890 for Eq. 4, 5, and 6, respectively. Compared to models selected from literature, which recorded R 2 values of 0.796 and 0.636 with an average variance of 0.097 and 0.257 respectively. The correlation variables showed that the degree of expansion represented by swelling stress demonstrated a proportionality with the moisture capacity along the drying and wetting path of the suction curves. Results suggest that the developed models can reasonably predict the swelling stress of compacted expansive soils at high suction values.

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Empirical Correlations for the Swelling Pressure of Expansive Clays in the City of Barranquilla, Colombia

Cited by 14 publications

References 9 publications

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

On the Recent Trends in Expansive Soil Stabilization Using Calcium‐Based Stabilizer Materials (CSMs): A Comprehensive Review

Stabilization of Expansive Soils Using Mechanical and Chemical Methods: A Comprehensive Review

Validation of Semi-empirical Models for the Prediction of Swelling Stress for Compacted Unsaturated Expansive Soils

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