Experimental investigation of using reclaimed asphalt pavement aggregate in scrap tire encased stone column

Document Type : Research Article


1 Qom university of technilogy

2 Qom university of technology

3 Islamic Azad university of Technology


The stone column is one of the cost-effective techniques for improving soft soil layers. Since in the construction process of stone column, weak soil is replaced with the stiffer material, appropriate method to bury the waste materials, e.g. reclaimed asphalt pavement (RAP) and scrap tires, is to use as stone column materials. The aim of this study is the application of scrap tires for enclosing stone columns and RAP mixed with gravel for the stone column to provide an environmental friendly and cost-effective improvement method for weak layers. In order to investigate the behavior of such stone columns, experimental modeling of the unit cell consisting of a single stone column with reclaimed asphalt pavement as filler material and encasing it by scrap tires has been carried out. RAP contents of 0%, 25%, 50%, 75% and 100% are selected to investigate effects of different mixing ratios. Loading capacity tests were performed on encased and non-encased stone column specimens. Results of loading capacity tests show that the encasing of stone columns with scrap tires improves the loading capacity significantly.  On the other hand, by increasing the RAP ratio from 0% to 100%, the stone column loading capacity changes. However, no significant change in the bearing capacity has not been observed and therefore, the use of a stone column made of 100% or any percentage of RAP is reasonable.


Main Subjects

[1] R. Barksdale, R. Bachus, Design and construction of stone columns, vol. I, Turner-Fairbank Highway Research Center, 1983.
[2] I. Indian Standard, Design and construction for ground improvement—Guidelines. Part 1: Stone columns, IS, 15284 (2003) 267-290.
[3] M.Y. Fattah, M.A. Al-Neami, A.S. Al-Suhaily, Estimation of bearing capacity of floating group of stone columns, Engineering science and technology, an international journal, 20(3) (2017) 1166-1172.
[4] A. Ambily, S.R. Gandhi, Behavior of stone columns based on experimental and FEM analysis, Journal of geotechnical and geoenvironmental engineering, 133(4) (2007) 405-415.
[5] D. Greenwood, Mechanical improvement of soils below ground surface, in:  Inst Civil Engineers Proc, London/UK/, 1970.
[6] H. Wong, Vibroflotation-its effect on weak cohesive soils, Civil Engineering (London), 82 (1975) 44-76.
[7] M. Madhav, P. Vitkar, Strip footing on weak clay stabilized with a granular trench or pile, Canadian Geotechnical Journal, 15(4) (1978) 605-609.
[8] H. Aboshi, The compozer, a method to improve characteristics of soft clays by inclusion of large diameter sand columns, in:  Proc. of 1st Int. Conf. on SoiL Reinforcement, 1979, pp. 211-216.
[9] J.N. Afshar, M. Ghazavi, Experimental studies on bearing capacity of geosynthetic reinforced stone columns, Arabian Journal for Science and Engineering, 39(3) (2014) 1559-1571.
[10] M. Ghazavi, J.N. Afshar, Bearing capacity of geosynthetic encased stone columns, Geotextiles and Geomembranes, 38 (2013) 26-36.
[11] M. Miranda, A. Da Costa, J. Castro, C. Sagaseta, Influence of geotextile encasement on the behaviour of stone columns: Laboratory study, Geotextiles and Geomembranes, 45(1) (2017) 14-22.
[12] P. Debnath, A.K. Dey, Bearing capacity of geogrid reinforced sand over encased stone columns in soft clay, Geotextiles and Geomembranes, 45(6) (2017) 653-664.
[13] A. Marto, M. Hasan, M. Hyodo, A.M. Makhtar, Shear strength parameters and consolidation of clay reinforced with single and group bottom ash columns, Arabian Journal for Science and Engineering, 39(4) (2014) 2641-2654.
[14] M. bin Hasan, N. binti Yusuf, A.M.H. Kassim, Strength of Soft Clay Reinforced with Group Crushed Polypropylene (PP).
[15] N. Shariatmadari, S. Zeinali, H. Mirzaeifar, M. Keramati, Evaluating the effect of using shredded waste tire in the stone columns as an improvement technique, Construction and Building Materials, 176 (2018) 700-709.
[16] R. Ayothiraman, S. Soumya, Model tests on the use of tyre chips as aggregate in stone columns, Proceedings of the Institution of Civil Engineers-Ground Improvement, 168(3) (2015) 187-193.
[17] S.S.G. Prasad, Y. Harish, P. Satyanarayana, Stabilization of Marine Clays with Geotextile Reinforced Stone Columns Using Silica-Manganese Slag as a Stone Column Material, International Journal of Computational Engineering Research (IJCER), 5(09) (2015) 05-12.
[18] T. Mazumder, A. Rolaniya, R. Ayothiraman, Experimental study on behaviour of encased stone column with tyre chips as aggregates, Geosynthetics International, 25(3) (2018) 259-270.
[19] P. Baranowski, P. Bogusz, P. Gotowicki, J. Małachowski, Assessment of mechanical properties of offroad vehicle tire: Coupons testing and FE model development, Acta mechanica et automatica, 6 (2012) 17-22.