Kundu, Pankaj, Padmanabhan, Gowtham, Gupta, Neha. (1402). Evaluation of Dynamic Properties of Fiber Reinforced Sandy Soil at High Cyclic Strains. هنرهای کاربردی, 11(3), 107-121. doi: 10.22075/jrce.2022.25782.1593
Pankaj Kundu; Gowtham Padmanabhan; Neha Gupta. "Evaluation of Dynamic Properties of Fiber Reinforced Sandy Soil at High Cyclic Strains". هنرهای کاربردی, 11, 3, 1402, 107-121. doi: 10.22075/jrce.2022.25782.1593
Kundu, Pankaj, Padmanabhan, Gowtham, Gupta, Neha. (1402). 'Evaluation of Dynamic Properties of Fiber Reinforced Sandy Soil at High Cyclic Strains', هنرهای کاربردی, 11(3), pp. 107-121. doi: 10.22075/jrce.2022.25782.1593
Kundu, Pankaj, Padmanabhan, Gowtham, Gupta, Neha. Evaluation of Dynamic Properties of Fiber Reinforced Sandy Soil at High Cyclic Strains. هنرهای کاربردی, 1402; 11(3): 107-121. doi: 10.22075/jrce.2022.25782.1593

Evaluation of Dynamic Properties of Fiber Reinforced Sandy Soil at High Cyclic Strains

Journal of Rehabilitation in Civil Engineering
مقاله 6، دوره 11، شماره 3 - شماره پیاپی 31، پاییز 2023، صفحه 107-121    اصل مقاله (794.66 K)
نوع مقاله: Research Note
شناسه دیجیتال (DOI): 10.22075/jrce.2022.25782.1593
نویسندگان
Pankaj Kundu* ؛ Gowtham Padmanabhan؛ Neha Gupta
Department of Earthquake Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
چکیده
In the recent development of synthetic and natural fiber in the industry of cement materials, polypropylene fiber become cheap and globally available. Due to its high mixability with soil and high tensile strength, it has been used for strengthening the soil. In the current investigation, cyclic triaxial experiments were performed to examine the dynamic response of fiber reinforcement in a poorly graded sand subjected to cyclic loading. Fiber reinforced sand (FR) mixtures are prepared by short polypropylene fiber of 6 mm length with different percentages of fibers (0.25%, 0.5%, and 1.0%) and compared with unreinforced sand (UR) All the samples were tested at confining pressure of 50 kPa. All samples were tested at three different axial strains 0.075%, 0.5%, and 1.125%, respectively under no drainage condition. Maximum shear modulus is found at 18.16 MPa for sand with 0.5% fiber and the damping ratio found decreased with increasing fiber content and reduced to 15% for sand with 1.0% fiber content. Also, the effect of shear strain and repetitive loading cycle on damping and shear modulus behavior is presented in this study.

تازه های تحقیق
  • The presence of fibers increases the liquefaction resistance of sand.
  • Maximum dry density of soil will decrease as we increase the fiber content of the sand mixture
  • The inclusion of fibers up to 0.5% can increase the shear modulus.
  • There is not much influence of loading cycle on the shear modulus and damping ratio.
  • This study can used as a preliminary study of the dynamic response of short polypropylene reinforced poorly graded sand.
کلیدواژه‌ها
Polypropylene fiber؛ Cyclic triaxial؛ Reinforced sand؛ Shear modulus؛ Damping ratio
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