Function and Application of Geogrid in Flexible Pavement under Dynamic Load

Jebur, Fatin F.; Fattah, Mohammed Y.; Abduljabbar, Ahmed S.

doi:10.30684/etj.v39i8.1771

Cited by 6 publications

(5 citation statements)

References 11 publications

(10 reference statements)

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“…Result from the creation of a stable composite between the base materials and geogrid. Because of the reorientation of the subbase particles over time, there is less interlocking at first and more over time, which is consistent with [16].…”

Section: Vertical Stress -Time Relationship For Reinforced Modelsupporting

confidence: 77%

“…This may be due to the degradation of the base course with repeated loading cycles. The vertical stress increases, which causes the stress distribution area to become smaller, which agrees with [16]. Due to the drop in the base course's modulus and the stress distribution reduction angle, which matches [19].…”

Section: Vertical Stress -Time Relationship For the Model Tests 521 V...supporting

confidence: 60%

“…The geogrid employed in this study was SS2, as shown in Figure 5, and was manufactured by QMOF Company (Quality Material of Oil Field) [16]. The physical and mechanical parameters of the geogrid type SS2 are shown in Table 4.…”

Section: Geogridmentioning

confidence: 99%

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Performance of Reinforced Subbase Materials by Geogrid as Abase Layer Under Weak Subgrade

Banyhussan,

hassan,

Kadhum

2023

E3S Web Conf.

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The current study examines how an unpaved road behaves when it is installed on top of a soft clay layer that's been strengthened at the subgrade/subbase interface with a single layer of geogrid type SS2 is used to reinforce a laboratory model, and cycling load is used to apply repeated loads to the model. Subbases with and without reinforcement over soft subgrade were built in a sizable test box. (1000 mm×1000 mm×1000 mm). The test results show that using a geogrid reinforcement layer enhances the number of cycles and stress distribution while decreasing displacement on the soft subgrade surface on reinforced models compared to similar unreinforced ones for the same rutting value (85 mm). The rate of increase in failure time is about (6.12, 3.7, and 1.7) for 150, 230, and 300 mm thickness, respectively. The rate of redaction in vertical stress is about (18, 12.5, and 7.1) % for 150 mm, 230 mm, and 300 mm thickness, respectively.

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Section: Vertical Stress -Time Relationship For Reinforced Modelsupporting

confidence: 77%

Section: Vertical Stress -Time Relationship For the Model Tests 521 V...supporting

confidence: 60%

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Performance of Reinforced Subbase Materials by Geogrid as Abase Layer Under Weak Subgrade

Banyhussan,

hassan,

Kadhum

2023

E3S Web Conf.

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“…When increasing the frequency and load amplitude, it is noticed that there is a small decrease in displacement since the major deformation occurs at early cycles [15].…”

Section: Mises Stress Of a Cylindrical Sample Under The Effect Of Tra...mentioning

confidence: 99%

Finite Element Simulation of Repeated Loading Test of Asphalt Concrete

Hatem¹,

Hilal²,

Fattah³

2022

ETJ

Self Cite

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 Abaqus program was used to carry out finite element analysis to predict the rut in the asphalt laboratory model.  A laboratory test was simulated considering the boundary conditions, load steps, and temperature.  The numerical and experimental displacement results indicate that the program can simulate the rut that occurs in the model.  The effect of the temperature was not noticeable. In this paper, the Abaqus 6.14 version program was used to carry out a threedimensional finite element analysis to predict the rut in the asphalt laboratory model. In a previous study, a cylinder model of asphalt was tested under the influence of traffic loads and temperature. The test was simulated using the finite element method considering the boundary conditions, load steps, and temperature. The cohesive zone model (CZM) approach was used in the Abaqus program to analyze the spread of the rutting in the model to simulate the fracture and improve the sample structure and the materials used. The Abacus program analysis showed satisfactory results when compared with the experimental results. The numerical and experimental displacement results indicate that the program can simulate the rut that occurs in the model. Using a temperature of 55 ° C showed that the effect of the temperature was not noticeable. XFEM-CZM coupled model provides a suitable numerical tool to represent the rutting tests.

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“…Transportation and reversal matrices (TRM) procedure was utilized in conjunction with the physical model to generate public solutions for stresses and displacements of layered system subjected to dynamic double circular loads at its roof. Jebur et al (2021) conducted experiments in which the road layers were subjected to a harmonic dynamic load of 10-and 15-kN with two frequencies of 0.5-and 1-Hz. A stress gauge sensor was used to measure the vertical stress in the road layers.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Flexible Pavement Behavior Under Dynamic Earthquake Loading

Hussein¹

2022

MJET

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Through cushioning the pressures caused from high traffic at prior asphalt, a reinforcing interlayer delays the formation of cracks at bitumen overlay. Experimental effort comprises of laboratory testing that better known behavior of sand as a subgrade and its impact on flexible pavement and base-course layer during earthquakes. The sand layer was 600 mm thick; the base was 200 mm thick, and the asphalt layer was constructed as a panel with dimensions of 300*300*50 mm, representing surface. These layers are put to the test with varied earthquake loading frequencies of 0.5, 1, and 1.5 Hz. Experiments were divided into two sections: one without geogrid and the other with geo-grid at center of -base and among base and sand. It was discovered that the frequency of ground movement causes cracks in the asphalt layer, which increases with shaking frequency and reduces with geogrid installation.

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Function and Application of Geogrid in Flexible Pavement under Dynamic Load

Cited by 6 publications

References 11 publications

Performance of Reinforced Subbase Materials by Geogrid as Abase Layer Under Weak Subgrade

Performance of Reinforced Subbase Materials by Geogrid as Abase Layer Under Weak Subgrade

Finite Element Simulation of Repeated Loading Test of Asphalt Concrete

Assessment of Flexible Pavement Behavior Under Dynamic Earthquake Loading

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