The Performance of Shear Strength and Volume Changes of Expansive Soils Utilizing Different Additives

Irshayyid, Entesar J.; Fattah, Mohammed Y.

doi:10.1088/1757-899x/518/2/022043

Cited by 10 publications

(6 citation statements)

References 1 publication

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“…The increase in LL with higher proportion of plastic strips could be a result of the reduced friction in the soil, due to excess amount of plastic strips added to the soil which act as a lubricant and result in easier movement of the soil particles resulting in higher liquid limits. Similar findings of decrease in LL and swelling percentage of the treated soil with plastic strips has been stated in literatures [1,[38][39]. The observed increase in liquid limit (LL) with higher sisal fiber content can be attributed to the water absorption capacity of sisal.…”

Section: Effect Of Plastic Strips/sisal Fiber and Cement On The Liqui...supporting

confidence: 89%

Case Evaluation of Structural Strength Improvement of Lateritic Soil Using Selected Binders

Yohanna,

Kufre,

Ekene

et al. 2024

Preprint

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The research investigated the potential use of sisal fiber and plastic waste strips as a partial replacement for cement to enhance the geotechnical characteristics of lateritic soils. Various laboratory experiments were conducted, encompassing tests such as specific gravity determination, grain size distribution analysis, compaction assessment, Atterberg limit evaluation, unconfined compressive strength (UCS) testing, and microscopic analysis. Sisal fiber and plastic strips were each varied at 0, 0.5, 1.0, 1.5, 2.0 and 2.5% while maintaining a constant 5% cement added to all the mix proportions. Result of investigations revealed an enhancement in plasticity of the soils for both treatment methods. Liquid limit shows a steady drop from 43% in its natural state to 42% and 41% at 1% sisal fiber and 1% plastic strips content respectively, while plasticity index showed a decline from 14.8% in its natural form to 12.69% and 10.8% at 2% sisal fiber and 1% plastic strips content respectively. There is a considerable development in the compaction and strength properties of the treated soil. The analysis of the results via one-way analysis of variance (ANOVA) and regression recorded a significant effect on most of the measured parameters. Microanalysis of the natural and optimally modified soils showed alteration in the fabric arrangement of the particles of soils. Based on the results of the study, optimally 1-1.5% sisal fiber/5% cement and 1-1.5% plastic strips/5%cement meaningfully improved the soil strength and can both be used as sub-base materials for light trafficked roads.

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Section: Effect Of Plastic Strips/sisal Fiber and Cement On The Liqui...supporting

confidence: 89%

Case Evaluation of Structural Strength Improvement of Lateritic Soil Using Selected Binders

Yohanna,

Kufre,

Ekene

et al. 2024

Preprint

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“…The results showed that the three soils' LLs decreased by about 11%-18% with the addition of 9% RHA, while the PI reduced by about 32%-80%, and the soil's rice husk content increased to its maximum at RHA between 6% and 8%. Irshayyid and Fattah [26] compared two methods for enhancing the parameters of the soil: the first method used steel fibers to enhance the soil, and the second method used plastic waste to enhance the strength and volume fluctuations of the soil. The effects of adding varying amounts of steel fiber and plastic trash (4%, 8%, and 12%) by dry weight of soil were investigated in a number of tests.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Coffee Husk Ash on the Geotechnical Properties of Gypsum-Stabilized Expansive Clayey Soil

Tessema,

Wolelaw,

Abebe

et al. 2023

Advances in Civil Engineering

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Expansive clayey soils (CSs) expand and become softer as moisture content increases, but they get harder and stronger as they dry out. The earth’s swelling and shrinkage characteristics under varying moisture conditions make roads built on expansive CS, in particular, vulnerable to early degradation. In this investigation, coffee husk ash (CHA), gypsum, and a blend of the two additives (G-CHA) were used in experimental tests to treat expansive CS. This study aims to evaluate experimentally the potential of expansive soil stabilization using different additives: CHA, gypsum, and a combination of gypsum and CHA. Five different percentages of CHA (5%, 10%, 15%, 20%, and 25%), three percentages of gypsum (3%, 6%, and 9%), and variable percentages of their combinations were used to stabilize the soil for pavement subgrade application. Atterberg limits, compaction, linear shrinkage (LS), swelling, unconfined compressive strength (UCS), and California bearing ratio (CBR) tests were performed on treated and virgin soil specimens at 3, 7, 14, 28, and 56-day curing times. Results showed that CHA additives effectively reduced the plasticity, LS, and swell potential in addition to increasing the maximum dry unit weight, UCS, and CBR. It was determined that the UCS and CBR values for the 6% stabilized gypsum soil increased by 28.95% and 19.54%, respectively, and reduced by 41% of the plastic index parameter after the addition of 15% CHA. Based on the evaluation of the results, an optimum mixture of 6% gypsum and 15% CHA (SG6C15) stabilized soil can be used in pavement subgrade applications as it achieved the minimum strength target. The performance of CHA-treated samples as subgrade material is superior to that of untreated virgin soil. Because of the stronger subgrade, smaller pavement layers result in a thinner pavement structure.

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“…Because clayey soils volume change behavior is so sensitive to moisture content, expansive soils are used difficult in engineering applications [2]. A variety of soil stabilization techniques have been used to stabilize expansive soil, including fly ash [11] RBI Grade-81 [12], Steel fiber [13], Rice husk [14], glass fiber [15][16][17][18][19][20][21][22][23][24][25][26], bagasse ash [4] [27-28], lime [27, [29][30], cement [26,31], corn straw ash [32], Polypropylene Fiber [10,18,33], Basalt Fiber [34], Coir Fiber [35], Sisal Fibre [36], Jute Fiber [37] and Plastic Waste Powder [38] etc. When the area to be treated is limited, reinforcements are especially trustworthy and successful at strengthening weak soil.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Effect of Glass Fiber on the Geotechnical Properties of Black Cotton Soil

Singh

Kumar

Tiwari

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Black cotton soil (BCS) has now been declared as one of the poorest soil among all soils regarding civil engineering construction projects due to presence of its inherent clay mineral i.e. montmorillonite, which introduces undesirable shrinkage and swelling in the BCS. BCS should not be used directly in civil engineering projects because of its excessive volume change behavior. The sample of black cotton soil for the study has been collected from district Narsinghpur near the Bikrampur railway station, Madhya Pradesh, India. Evaluation of effect of glass fiber addition on the strength properties of BCS is described in this research article. Glass fiber acquires good properties such as stiffness, high strength, resistance and flexibility to chemical loss. Glass fiber has been mixed with oven dried BCS from 2% to 8% by its weight. Geotechnical properties are thoroughly investigated before and after treating the BCS sample by means of various laboratory tests. For both treated and untreated BCS samples, UCS testing was performed with varying curing time of 0, 4, 7, 14, 28 and 56 days. UCS value was found to be decreased due to water holding capacity of glass fiber. The laboratory findings indicate that for all additives, MDD and expansion ratio of the BCS decreases, whereas OMC and CBR value increases. XRD (X-ray diffraction) analysis has been conducted on untreated and glass fiber treated BCS samples to estimate change in microstructure and mineralogical composition.

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The Performance of Shear Strength and Volume Changes of Expansive Soils Utilizing Different Additives

Cited by 10 publications

References 1 publication

Case Evaluation of Structural Strength Improvement of Lateritic Soil Using Selected Binders

Case Evaluation of Structural Strength Improvement of Lateritic Soil Using Selected Binders

Utilization of Coffee Husk Ash on the Geotechnical Properties of Gypsum-Stabilized Expansive Clayey Soil

Assessment of Effect of Glass Fiber on the Geotechnical Properties of Black Cotton Soil

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