Behavior of Cohesive Soil Reinforced by Polypropylene Fiber
Engineering and Technology Journal,
2020, Volume 38, Issue 6, Pages 801-812
AbstractFor any land-based structure, the foundation is very important and has to be strong to support the entire structure. In order for the foundation to be strong, the soil underneath it plays a very critical role. Some projects where the soil compacted by modifying energy is insufficient to achieve the required results, so the additives as a kind of installation and reinforcement are used to achieve the required improvement. This study introduces an attempt to improve cohesive soil by using Polypropylene Fiber instead of conventional kinds used in soil stabilization. Three different percentages (0.25%, 0.5%, and 0.75% by dry weight of soil) and lengths (6, 12, and 18) mm of fiber are mixed with cohesive as a trial to enhance some properties of clay. The results of soil samples prepared at a dry density at three different water conditions (optimum water content, dry side, and wet side) showed that the increase of the percentage and length of polypropylene fiber causes a reduction in the maximum dry density of soils. Soil cohesion increases with the increase of PPF up to 0.5% then decreased. The length of Polypropylene fiber has a great effect on the cohesion of soil and adding 0.5% Polypropylene fibers with a length of 18mm to the soils consider the optimum mix for design purposes to improve the soil. Finally, the soil reinforced by PPF exhibits a reduction in the values of the compression ratio (CR) and accelerates the consolidation of the soil.
 R. M. Jones, “Mechanics of composite materials,” Taylor and Francis, 2nd ed, 1999.
 S. Kazemian, K. Huat, A. Prasad and M, Barghchi, “A review of stabilization of soft soils by injection of chemical grouting,’’ Journal of Basic and Applied Science, Vol. 4, No. 12, pp. 5862 – 5868, 2010.
 A. Ola, “Stabilization of lateritic soils by extensible fiber reinforcement,’’ Engineering Geology. Vol. 26, pp. 125-140, 1989.
 H. Binici, O. Aksogan, and T. Shah, “Investigation of reinforced mud brick as a building material,’’ Construction Building Material, Vol. 19, No. 4, pp. 313-318, 2005.
 C. Tang, B. Shi, W. Gao, F. Chen, and Y. Cai, “Strength and mechanical behavior of short polypropylene fiber reinforced and cement stabilized clayey soil,’’ Geotextiles and Geomembranes, Vol. 25, No. 3, pp.194-202, 2007.
 A. S. Soğancı, “The effect of polypropylene fiber in the stabilization of expansive soils,” World Academy of Science, Engineering and Technology, International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering, Vol. 9, No. 8, pp. 994-997, 2015.
 M. S. Teja, “Soil stabilization using polypropylene fiber materials,” International Journal of Innovative Research in Science, Engineering and Technology (IJIRSET), Vol. 5, No. 9, pp. 18906-18912, 2016.
 ASTM D2166, “Standard test method for unconfined compressive strength of cohesive soil,” West Conshohocken, PA, United States, 2000.
 S. K. Shukla., “Fundamentals of fibre-reinforced soil engineering,” Springer Singapore, Nature Switzerland AG, 2017.
 ASTM D2435, “Standard test method for one-dimensional consolidation properties of soils,” Annual Book of ASTM Standards. Vol. 04.08. ASTM International. West Conshohocken. PA. pp. 1–10, 2016.
 L. D. Wesley, “Compression index misleading parameter,” Journal of Geotechnical Engineering, Vol. 114 No. 6, pp. 718-723, 1988.
- Article View: 48
- PDF Download: 20