Granular Soil Improvement by Using Polyester Grouts

Çelik, Semet; Majedi, Payam; Akbulut, Suat

doi:10.1007/s40996-018-0203-3

Cited by 12 publications

(5 citation statements)

References 26 publications

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“…1, AVR system without controller can be built with each component characterised by transfer of first-order function with 'K' gain and the time constant ẗ in the AVR system. The K-and μ-parameter value fluctuates within the certain ranges, according to the Table-1, [10][11][12][13][14][15]. The parameters of the AVR systems components [12][13][14][15] shall be specified in study Ka = 10, ä = 0.1, Ke = 1, ë = 0.4, Kg = 1, òg = 1.0, Ks = 1, and ′s = 0.01.…”

Section: Avr System Modelmentioning

confidence: 99%

“…The K-and μ-parameter value fluctuates within the certain ranges, according to the Table-1, [10][11][12][13][14][15]. The parameters of the AVR systems components [12][13][14][15] shall be specified in study Ka = 10, ä = 0.1, Ke = 1, ë = 0.4, Kg = 1, òg = 1.0, Ks = 1, and ′s = 0.01. This phase reaction to these unregulated AVR system parameters is seen in Figure 2.…”

Section: Avr System Modelmentioning

confidence: 99%

“…Also, in their above-described optimization techniques researchers have examined many types of goal functions to enhance AVR system response. AVR's [2][3][4][5]9,1013,13,18,[16][17][18][20][21][22][23] system also includes user-defined target functions, which combine the surplus percentage, setup time, peak time, time increases, stable state error and gain margin. [2] offers an over-hitch percentage, settlement time, time increment, and continuous state mistakes as a typical user-defined target function.…”

Section: Introductionmentioning

confidence: 99%

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Avr System Analysis and Simulation by Using Fopid and Parameters Variation Effects

Srikanth¹,

Padhan²,

Kumar³

2021

E3S Web Conf.

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The FOPID control units for an AVR system with a fractional filter are a unique fractional order. The main responsibility for controlling the reactive power and voltage level is an automated tensile regulator (AVR). PID controller, sensor, exciter, and stabiliser or amplifier are used for the module system. The system is designed according to state-space technology. The proposed controller must have seven independent parameters. A comparison of the published study with optimal adjusted AVR PID and FOPID controls also shows that the proposed controller is superior. The recommended controls derived from the bode analysis with their frequency response characteristics are shown. Finally, the resilience of the controller design is individually examined for both the parameter uncertainties of AVR system and outside storages introduced into AVR system. Given the overall results presented there are clear improvements to the performance of AVR system by a fractional filter in a proposed FOPID controller, and that the AVR system may successfully be applied to the suggested control.

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Section: Avr System Modelmentioning

confidence: 99%

Section: Avr System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Avr System Analysis and Simulation by Using Fopid and Parameters Variation Effects

Srikanth¹,

Padhan²,

Kumar³

2021

E3S Web Conf.

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“…One of the most important aspects of engineering construction is the development of early compressive strength. This significantly improves building quality and efficiency in construction, minimizes the risk of early cracks, and allows for earlier use of the building [29][30][31][32]. In this proposed model, the early strength and stiffness of stabilized soil, in particular, were simulated.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Time-Dependent Strength and Stiffness in Palm Oil Fuel Ash-Stabilized Soil: Early and Long-Term Effects

Al-Dalain,

Ezreig,

Ismail

2024

Civ Eng J

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Over the years, investigating the behavior of soft soil, stabilized using different techniques, has been recognized as a critical priority for geotechnical engineers. Numerous soil constitutive models have been utilized to simulate stabilized soil behavior, improve strength and ductility, and analyze load-deformation responses. However, further investigation is required to study stabilized soil's time-dependent strength and stiffness, especially at an early curing age. Early strength and stiffness development is crucial in engineering construction for improving building quality and efficiency and minimizing crack risk. Furthermore, estimating UCS from an early age aid in safety evaluation and ground-improvement analysis. Researchers are increasingly recognizing palm oil fuel ash (POFA) as an eco-friendly alternative to traditional soil stabilizers due to its abundant availability. This study proposes an advanced concrete constitutive model to simulate the time-dependent strength and stiffness of POFA-stabilized and cement-stabilized soil due to pozzolanic interactions. The model accurately measures strength and stiffness improvement from an early curing age to 28 days using finite element analysis (FEA) before then comparing the experimental results. Based on the experimental results, the UCS values of palm oil fuel ash-stabilized soil grew to 3.18 MPa and 3.89 MPa after seven and 28 days with an optimum content of 30% (POFA): 10% Magnesium Oxide (MgO). It exhibited a significant increase in early strength with 64.02% compared with cement-stabilized soil. For stiffness results, a slight increment of 9.26% was observed. Employing FEM, the sensitivity of the parameters to stress-strain behavior was investigated. Finally, the validity of the concrete constitutive model to predict the time-dependent strength and stiffness of stabilized soil was proved. Doi: 10.28991/CEJ-SP2024-010-05 Full Text: PDF

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“…Conventional soil improvement techniques, such as densification, dynamic compaction, stone columns, and chemical grouting have been successfully employed to enhance the engineering characteristics of various soils [1,2]. Nevertheless, these techniques have some setbacks due to their potential adverse environmental effects [3].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Strength of Sandy Soil Through Enzyme-Induced Calcite Precipitation

Muhammed

Kassim

Zango

et al. 2021

Int. J. of Geosynth. and Ground Eng.

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Enzyme-induced calcite precipitation (EICP) is a biocementation technique that has the potential to improve the engineering properties of sand. The effectiveness of the EICP treatment was evaluated based on the unconfined compressive strength (UCS) tests at various concentrations of cementation reagent (CCR) and curing periods. The treated sand was analysed for its calcium carbonate content and microstructural analysis using FESEM-EDX. The results showed an increase in unconfined compressive strength and calcium carbonate content at a higher concentration of cementation reagent. The UCS value and CaCO 3 content of the treated samples are 161-552 kPa and 0.92-5.73%, respectively. There is a linear relationship between the UCS at various cementation reagent concentrations and the average calcium carbonate content.

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Granular Soil Improvement by Using Polyester Grouts

Cited by 12 publications

References 26 publications

Avr System Analysis and Simulation by Using Fopid and Parameters Variation Effects

Avr System Analysis and Simulation by Using Fopid and Parameters Variation Effects

Numerical Analysis of Time-Dependent Strength and Stiffness in Palm Oil Fuel Ash-Stabilized Soil: Early and Long-Term Effects

Enhancing the Strength of Sandy Soil Through Enzyme-Induced Calcite Precipitation

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