Document Type : Original Research Paper

Authors

National Institute of Technology-Hamirpur, Himachal Pradesh, India

Abstract

An experimental study is carried out to improve the bearing capacity of soils by using geotextile. In the present study geotextile (tire reinforcement) is used as geotextile, whereas sand is used as a soil medium. This research work presents the results of laboratory load tests on model square footings supported on reinforced sand beds. A total of twenty-seven load tests are conducted to evaluate the effects of single layer reinforcement placed below square model footings. The parameters of the testing program of the research work are the depth of reinforcement, the plan area of reinforcement, and the number of reinforcements. From the experimental data, it is indicated that there is an optimum reinforcement depth at which the bearing capacity is the highest. Also, the optimum size of reinforcement is found to be 1.5 B×1.5 B irrespective of the type of reinforcing materials used. The bearing capacity of reinforced sand is also found to increase with the number of reinforcement layer and reinforcement size when the reinforcement is placed within a certain effective zone with high relative density. The optimum placement position of geotextile is found to be 0.5B to 0.75B from the base of the footing .The tests are done at two different relative densities, i.e., 40% and 60%. The bulk unit weight of sandy soil is 14.81 KN/m³. Maximum gain in load carrying capacity is obtained when depth of reinforcement/width of footing (Dr/B) is 0.5 at relative density of 40% and 0.75 at a relative density of 60%.In addition, the data indicate that increasing reinforcement beyond a certain value would not bring about further increase in the bearing capacity of the soil.

Keywords

[1]. Akhil, K.S., N. Sankar, and S. Chandrakaran (2019). Behaviour of model footing on bamboo mat-reinforced sand beds. Soils and Foundations 59, No. 5 1324-1335.
[2]. Aktürk, Koray and Öznur Karaca. (2021). Using Granular Waste Tire as a Factor to Increase Shear Strength of Cohesionless Soils. Journal of Advanced Research in Natural and Applied Sciences 7, No. 2 (256-265.
[3]. Bhardwaj A. and Sharma, R.K. (2022). Designing thickness of subgrade for flexible pavements incorporating waste foundry sand, molasses, and lime. Innovative Infrastructure Solutions 7, No. 1, 132.
[4]. Bhardwaj A. and Sharma, R.K. (2022). Bearing Capacity Evaluation of Shallow Foundations on Stabilized Layered Soil using ABAQUS. Studia Geotechnica et Mechanica.
[5]. Bhardwaj A. and Sharma, R.K., and Abhishek Sharma. (2021). Stabilization of clayey soil using waste foundry sand and molasses. In Sustainable Development Through Engineering Innovations: Select Proceedings of SDEI 2020, pp. 641-649. Springer Singapore.
[6]. Das, Braja M. (2016). Use of geogrid in the construction of railroads. Innovative Infrastructure Solutions 1, 1-12.
[7]. Hataf, Nader, and M.M. Rahimi. (2006). Experimental investigation of bearing capacity of sand reinforced with randomly distributed tire shreds. Construction and building materials 20, No. 10, 910-916.
[8]. Jadhav, Surendra P., and R.M. Damgir. (2011). Use of jute geo-textile for strengthening of sub-grade of road work. Innovative Systems Design and Engineering 2, No. 4, 40-47.
[9]. Kumar, Arvind, Baljit Singh Walia, and Asheet Bajaj. (2007). Influence of fly ash, lime, and polyester fibers on compaction and strength properties of expansive soil. Journal of materials in civil engineering 19, No. 3, 242-248.
[10]. Mittal, Ravi Kant, and Gourav Gill. (2020). Pressure settlement Behaviour of strip footing resting on tire-chip reinforced sand. International Journal of Geotechnical Engineering 14, No. 2, 162-168.
[11]. Omar, M.T., B.M. Das, V.K. Puri, and S.C. Yen. (1993). Ultimate bearing capacity of shallow foundations on sand with geogrid reinforcement. Canadian geotechnical journal 30, No. 3, 545-549.
[12]. Panigrahi, B., and P.K. Pradhan (2019). Improvement of bearing capacity of soil by using natural geotextile. International Journal of Geo-Engineering 10, 1-12.
[13]. Yeau, Kyong Y., and Halil Sezen (2012). Load-rating procedures and performance evaluation of metal culverts. Journal of Bridge Engineering 17, No. 1, 71-80.
[14]. Tavangar, Yashar, and Issa Shooshpasha. (2016). Experimental and numerical study of bearing capacity and effect of specimen size on uniform sand with medium density, reinforced with nonwoven geotextile. Arabian Journal for Science and Engineering 41, 4127-4137.
[16]. Dixit, M.S., and K.A. Patil (2014). Effect of reinforcement on bearing capacity and settlement of sand. Electronic Journal of Geotechnical Engineering 19: 1033-1046.
[17]. Golewski GL. The Phenomenon of Cracking in Cement Concretes and Reinforced Concrete Structures: The Mechanism of Cracks Formation, Causes of Their Initiation, Types and Places of Occurrence, and Methods of Detection—A Review. Buildings. 2023; 13 (3):765.
[18]. Golewski, G.L. (2023). Combined Effect of Coal Fly Ash (CFA) and Nano silica (NS) on the Strength Parameters and Microstructural Properties of Eco-Friendly Concrete. Energies, 16 (1): 452.
[19]. Golewski, G.L. (2022). An extensive investigation on fracture parameters of concretes based on quaternary binders (QBC) by means of the DIC technique. Construction and Building Materials, 351, 128823.
[20]. Golewski, G.L. (2022). Comparative measurements of fracture toughness combined with visual analysis of cracks propagation using the DIC technique of concretes based on cement matrix with a highly diversified composition. Theoretical and Applied Fracture Mechanics, 121, 103553.
[21]. Golewski, G.L. and Szostak, B. (2022). Strength and microstructure of composites with cement matrixes modified by fly ash and active seeds of CSH phase. Structural Engineering and Mechanics, 82 (4): 543-556.
[22]. Akinmusuru, J.O. and Akinbolade, J.A. (1981). Stability of loaded footings on reinforced soil. Journal of the Geotechnical Engineering Division, 107 (6): 819-827.
[23]. Adams, M.T., and Collin, J.G. (1997). Large model spread footing load tests on geosynthetic reinforced soil foundations. Journal of geotechnical and geoenvironmental engineering, 123 (1): 66-72.
[24]. Ghazavi, M. and Lavasan, A.A. (2008). Interference effect of shallow foundations constructed on sand reinforced with geosynthetics. Geotextiles and Geomembranes, 26 (5): 404-415.
[25]. Latha, G.M. and Somwanshi, A. (2009). Bearing capacity of square footings on geosynthetic reinforced sand. Geotextiles and Geomembranes, 27 (4): 281-294.
[26]. Kumar, A. and Kaur, A. (2012). Model tests of square footing resting on fibre-reinforced sand bed. Geosynthetics International, 19 (5): 385-392.
[27]. Lavasan, A.A. and Ghazavi, M. (2012). Behavior of closely spaced square and circular footings on reinforced sand. Soils and Foundations, 52 (1): 160-167.
[28]. Abu-Farsakh, M., Chen, Q., and Sharma, R. (2013). An experimental evaluation of the behavior of footings on geosynthetic-reinforced sand. Soils and Foundations, 53 (2): 335-348.