Strength and Deformation Behavior of Fiber-Reinforced Cohesive Soil Under Varying Moisture and Compaction States

Patel, Suchit Kumar; Singh, Baleshwar

doi:10.1007/s10706-017-0207-y

Cited by 48 publications

(20 citation statements)

References 31 publications

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“…4, both axial strain at UCS peak (ε u ) and q u increase with increasing the fiber content. This result suggests that uniformity of fibers randomly distributed within the clay specimen leads to continuous energy absorption before the sample's failure [15]. In all tested fiber-reinforced clay specimens, E u decreased with an increase in water content.…”

Section: The Effect Of Water Contents On Strain Energy At Peak (E U ) Of Fiber-reinforced Claymentioning

confidence: 77%

“…Figure 5a shows that q u decreases with an increase in water content. Mirzababaei et al [16] reported a similar behavior of water content, whereas Patel and Singh [15] and Nataraj and McManis [17] showed that with an increase in water content, the q u value increases initially and declines, thereafter. According to their results, the highest q u value occurs at the OMC.…”

Section: The Effect Of Water Content On the Peak Ucs (Q U )mentioning

confidence: 93%

“…Hence, evaluating the effect of water content variations on the fiber-reinforced efficiency of these clays is of great necessity. In this regard, the previous works [15][16][17] have focused majorly on the fibers' effect on clayey soils, with few of them conducted on the impact of water content, especially optimum moisture content, on clays reinforced with fiber. Therefore, in this research, the effect of different water content on compressive strength, stress-strain behavior, shear strength, modulus of elasticity, shear strength ratio, strain energy, cohesion coefficient, and internal friction angle of the clay reinforced with a kind of waste polymeric fibers (carpet waste) was studied.…”

Section: Introductionmentioning

confidence: 99%

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The effect of water content on shear and compressive behavior of polymeric fiber-reinforced clay

Arabani

Haghsheno

2020

SN Appl. Sci.

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Soil reinforcement is a reliable and effective technique for enhancing soil resistance. The present study aims to investigate the impact of water content on the mechanical behavior of a fiber-reinforced clay. To this end, clay specimens were prepared with three water contents (15%, 17.5%, and 20% by clay weight) and three contents of fiber (0.1%, 0.2%, and 0.3% referred to clay weight). Next direct shear and unconfined compressive strength tests were performed to study the effect of water content on the modulus of elasticity, compressive strength, strain energy, shear strength, shear strength ratio, stress-strain behavior, internal friction angle and cohesion coefficient of the prepared clay. The results indicate when the water content is lower than the optimum moisture content (OMC), fiber decreases modulus of elasticity and increases ductile behavior, compressive and shear strength, strain energy, shear strength ratio and cohesion coefficient but when the water content is more than the OMC, fiber increases brittle behavior, compressive and shear strength, strain energy, shear strength ratio and friction angle.

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Section: The Effect Of Water Contents On Strain Energy At Peak (E U ) Of Fiber-reinforced Claymentioning

confidence: 77%

Section: The Effect Of Water Content On the Peak Ucs (Q U )mentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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The effect of water content on shear and compressive behavior of polymeric fiber-reinforced clay

Arabani

Haghsheno

2020

SN Appl. Sci.

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“…The UCS failure strength of clayey soil declined with an increment in water content. Some researchers [27] found a similar trend in water content, however, some of them [28,29] presented that as water content increases, the compressive strength rises at first and then decreases. Their results showed that the maximum UCS was observed at the optimum moisture content value.…”

Section: Evaluation Of Unconfined Compression Test Results and Effect...mentioning

confidence: 89%

A Study on Uniaxial Compressive Strength and Ultrasonic Non-Destructive Analysis of Fine-Grained Soil in Seasonally Frozen Regions

Umar¹,

FIRAT

2022

Turkish Journal of Science and Technology

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An experimental study has been carried out on clay soil with different water contents (18%, 21.5%, and 23%) after repeated freeze-thaw cycles (0, 2, 5, 7, 12, and 15). The performance of soil was evaluated using unconfined compressive strength (UCS) and ultrasonic pulse velocity (UPV) tests. The experimental results demonstrated that UCS peak values were observed at the lowest water content before and after the freeze-thaw cycles. The stress-strain curves exhibited strain-softening behavior, and this condition transitioned to strain hardening behavior after freeze-thaw cycles and with an increment in water content. Moreover, the highest values of UPV were observed for UCS values increasing due to capillary forces at minimum values of water content. Moreover, an increase in the number of freeze-thaw cycles resulted in a decrease in the UPV. According to correlations between UPV and UCS values, the highest correlations for water contents were obtained at optimum water content, and a decreasing trend was observed after experiencing a number of freeze-thaw periods. In addition, the Grey correlation analysis was performed to show the degree of correlation between the UCS and UPV, water content as well freeze-thaw cycles. The results demonstrated that the UPV values have a greater impact on the UCS than other parameters.

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“…Such brittle failure patterns and poor tensile behavior can be prevented by adding the short fibers into cemented soils [1,2]. In the aspect of experimental study on fiber reinforcement, investigators have conducted a great number of unconfined compression tests, triaxial tests, California bearing ratio tests, direct shear tests and tensile tests on fiber-reinforced soil in the last few decades [3,4,5,6,7,8,9,10,11,12,13,14,15]. All these previous investigations indicate that fiber reinforcement can be considered as a good soil improvement technique, and such soil presents great mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

Model Studies on Load-Settlement Characteristics of Coarse-Grained Soil Treated with Geofiber and Cement

Yan

Ling

et al. 2018

Polymers

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This study aims to verify the effectiveness of fiber reinforcing with and without cement on settlement controlling of subgrade models, and to investigate the effect of fiber reinforcement on the load-settlement behavior of subgrade models. To this end, laboratory subgrade model tests were conducted under different static vertical loads. Three subgrade models composed of different fillers were constructed in a rigid concrete tank, and the internal earth pressures and settlements at different depths were measured through an earth pressure cell and settlement plate. Results show that the fiber-reinforced model keeps a slight difference to the unreinforced model in terms of earth pressure distribution under lower applied surface pressure. However, the earth pressure at various locations under each surface pressure was obviously lower than that of the other two models due to the combined effect of fiber and cement. In addition, for the unreinforced subgrade model, the 60 cm settlement domain was restricted within 40 cm depth through fiber-cement and fiber reinforcing, and the total settlement under 100 kPa was decreased by 48.5% and 30.8%, respectively. Moreover, reinforced models present with different settlement deformation features. The inflection points, after which the rate of settlement decreased with increasing applied surface pressure, were observed in the pressure-settlement curves. Under 200 kPa, the fiber-cement and fiber reinforcement decreased the total settlement of the unreinforced model by 61.4% and 34.7%, respectively. The greater applied surface pressure, the more efficient was fiber-cement reinforcing in settlement controlling.

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Strength and Deformation Behavior of Fiber-Reinforced Cohesive Soil Under Varying Moisture and Compaction States

Cited by 48 publications

References 31 publications

The effect of water content on shear and compressive behavior of polymeric fiber-reinforced clay

The effect of water content on shear and compressive behavior of polymeric fiber-reinforced clay

A Study on Uniaxial Compressive Strength and Ultrasonic Non-Destructive Analysis of Fine-Grained Soil in Seasonally Frozen Regions

Model Studies on Load-Settlement Characteristics of Coarse-Grained Soil Treated with Geofiber and Cement

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