Compaction, Hydraulic, and Consolidation Characteristics of Reinforced Clays with Carpet Waste

Document Type : Research Paper

Authors

1 Faculty of Civil Engineering, Sahand University of Technology, Tabriz, Iran

2 Ph.D. Candidate, Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

Abstract

Due to the importance of environmental issues and reducing energy consumption, the use of waste materials to improve the engineering properties of soils has been widely noticed by researchers in recent years. This research investigates the effect of carpet waste fibers on the compaction, hydraulic, and consolidation properties of kaolinite clay. Standard compaction, falling head permeability, and one-dimensional consolidation tests were performed on soil samples containing 0.5, 1, and 2 percent of fibers (relative to the dry weight of the soil). In order to investigate the effect of the fiber length on the results, the length of the fibers was changed from 6 to 30 mm. The results showed that the presence of carpet waste fibers decreases the maximum dry density and increases the optimal moisture content of the samples. Also, the carpet fibers increased the hydraulic conductivity of the samples and reduced the settlement of clay soil and its swelling index. So that the compression index and swelling index for the sample with 2% fibers with a length of 30 mm decreased by 35 and 64%, respectively. The presence of carpet fibers in the soil increases the speed of clay consolidation. From the obtained results, it was found that the changes in the consolidation properties of clay are more significant with the content of fibers compared to the length of the fibers.

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References

Abdi, M. R., Parsapajouh, A. and Arjomand, M. A. 2008. “Effects of random fibre inclusion on consolidation, hydraulic conductivity, swelling, shrinkage limit and desiccation cracking of clays”. Int. J. Civ. Eng., 6(4): 284-292.
ACI Committee 544. 1982. “State-of-the-art report on fiber reinforced concrete”. 544.1R-82 (reapproved 1986), American Concrete Institute, Detroit.
Alabduljabbar, H., Mohammadhosseini, H., Md. Tahir, M. and Alyousef, R. 2021. “Green and sustainable concrete production using carpet fibers waste and palm oil fuel ash”. Mater. Today: Proc., 39: 929-934.
Bentur, A. and Mindess, S. 1990. “Fiber reinforced cementitious composites”. Elsevier, London.
Choobbasti, A. J., Samakoosh, M. A. and Kutanaei, S. S. 2019. “Mechanical properties of soil stabilized with nano calcium carbonate and reinforced with carpet waste fibers”. Constr. Build. Mater., 211: 1094-1104.
Fashandi, H., Pakravan, H. R., and Latifi, M. 2019. “Application of modified carpet waste cuttings for production of eco-efficient lightweight concrete”. Constr. Build. Mater., 198: 629-637.
Ghavami, S., Jahanbakhsh, H. and Moghadas Nejad, F. 2020. “Laboratory study on stabilization of kaolinite clay with cement and cement kiln dust”. Amirkabir J. Civ. Eng., 52(4): 935-948.
Ghavami, S. and Rajabi, M. 2021. “Investigating the influence of the combination of cement kiln dust and fly ash on compaction and strength characteristics of high-plasticity clays”. J. Civ. Eng. Mater. Appl., 5(1): 9-16.
Ghavami, S., Jahanbakhsh, H. and Moghadas Nejad, F. 2021. “Laboratory evaluation on the effectiveness of polypropylene fibers on the strength behavior of CKD-stabilized Soil”. Geotech. Geol., 17(1): 465-470.
Hassan, H. J. A., Rasul, J. and Samin, M. 2021. “Effects of plastic waste materials on geotechnical properties of clayey soil”. Transport. Infrastruct. Geotech., 8(3): 390-413.
Jain, A., Pandey, G., Singh, A. K., Rajagopalan, V., Vaidyanathan, R. and Singh, R. P. 2011. “Fabrication of structural composites from waste carpet”. Adv. Polym. Tech., 31(4): 380-389.
Laskar, A. and Pal, S. K. 2013. “Effects of waste plastic fibres on compaction and consolidation behavior of reinforced soil”. Electron. J. Geotech. Eng., 18: 1547-1558.
Maity, J., Chattopadhyay, B. C. and Mukherjee, S. P. 2017. “Improvement of characteristics of clayey soil mixed with randomly distributed natural fibers”. J. Institut. Eng. (India), Series A, 99(1): 55-65.
Malekzadeh, M. and Bilsel, H. 2012. “Swell and compressibility of fibre reinforced expansive soils”. Int. J. Adv. Tech. Civ. Eng., 1(2): 42-46.
Miraftab, M. and Mirzababaei, M. 2009. “Carpet waste utilisation, an awakening realisation: A review”. Second International Symposium on Fibre Recycling, Georgia Institute of Technology, Atlanta, Georgia, USA.
Mirzababaei, M., Miraftab, M., Mohamed, M. and McMahon, P. 2013. “Unconfined compression strength of reinforced clays with carpet waste fibers”. J. Geotech. Geoenviron. Eng., 139(3): 483-493.
Moseley, M. P. and Kirsch, K. 2004. “Ground improvement”. Second Edition, CRC Press, Boca Raton, FL, USA.
Realff, M. J., Ammons, J. C. and Newton, D. 1999. “Carpet recycling: Determining the reverse production system design”. Polym-Plast. Tech. Eng., 38(3): 547-567.
Sarli, J. M., Hadadi, F. and Bagheri, R. A. 2020. “Stabilizing geotechnical properties of loess soil by mixing recycled polyester fiber and nano-SiO2”. Geotech. Geol. Eng. 38: 1151-1163.
Shahbazi, M., Rowshanzamir, M., Abtahi, S. M. and Hejazi, S. M. 2017. “Optimization of carpet waste fibers and steel slag particles to reinforce expansive soil using response surface methodology”. Appl. Clay Sci., 142: 185-192.
Taylor, D. W. 1942. “Research on consolidation of clays”. Massachusetts Institute of Technology, Department of Civil Engineering, Serial No. 82.
Tran, K. Q., Satomi, T. and Takahashi, H. 2018. “Effect of waste cornsilk fiber reinforcement on mechanical properties of soft soils”. Transport. Geotech., 16: 76-84.
Wang, Y. 1999. “Utilization of recycled carpet waste fibers for reinforcement of concrete and soil”. Polym-Plast. Tech. Eng., 38(3): 533-546.

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History

  • Receive Date: 26 March 2023
  • Revise Date: 25 April 2023
  • Accept Date: 12 May 2023

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