Laboratory Study of the Effect of Cement Stabilization of the Interface of Reinforcement and Sand on the Interface Shear Strength

Document Type : Original Article

Authors

1 Faculty of Engineering, University of Mohaghegh Ardabili.Ardabil.Iran

2 Faculty of Engineering, University of Mohaghegh Ardabili.Ardabil.Iran.

Abstract

In this study, the effects of the cement stabilization on the interface of the soil and a geotextile, the thickness of the cement and geotextile layer, and the thickness of the geotextile layer on the interface shear strength have been investigated experimentally. In the experiments, a direct shear device with a cylindrical mold with a diameter of 6 cm was used. The geotextile was a woven type. The cement-treated reinforcements were papered by the application of a thin layer of cement with amounts of 0.016, 0.048, 0.08, and 0.112 gr/cm2 on the surface of saturated geotextiles. Geotextiles with different thicknesses were produced by joining several layers of geotextiles using a flexible glue. The interface shear tests have been performed under vertical stresses of 50, 100, and 150 kPa. The results show that adding 0.112 grams/cm2 of cement to the interface of the reinforcements can increase the shear strength of the interface of the samples by 50%, but the amount of cement added should not be less than a certain limit. By comparing the results of tests conducted with different thicknesses of reinforcement with different amounts of cement, it can be concluded that increasing both the cement content and the thickness of the reinforcement increases the shear strength of the interface. By increasing the thickness of the reinforcement, the soil grains are integrated into the reinforcing fabric, produce a rough surface, and increase the shear strength at the interface of the soil and the geotextile.

Keywords

Main Subjects

References

[1] Toufigh, V., Saeid, F., Toufigh, V., Ouria, A., Desai, C. S., & Saadatmanesh, H. (2014). Laboratory study of soil-CFRP interaction using pull-out test. Geomechanics and Geoengineering, 9(3), 208-214. doi: 10.1080/17486025.2013.813650‏
[2] Krishna Rao, S. V., & Nasr, A. (2012). Laboratory study on the relative performance of silty-sand soils reinforced with linen fiber. Geotechnical and Geological Engineering, 30(1), 63-74.‏ doi: 10.1007/s10706-011-9449-2
[3] Claria, J. J., & Vettorelo, P. V. (2016). Mechanical behavior of loose sand reinforced with synthetic fibers. Soil Mechanics and Foundation Engineering, 53(1), 12-18.‏ doi: 10.1007/s11204-016-9357-9
[4] Ouria, A., & Zardari, S. (2017). Effect of the length and content of fibers on the shear strength of randomly distribuated fiber-reinforced soil. Journal of Transportation Infrastructure Engineering, 3(1), 99-110.‏ doi: 10.22075/jtie.2017.1469.1118 [In Persian]
[5] Ouria, A., & Heidarly, E. (2021). Laboratory Investigation of the Effect of the Geotextile Placement Pattern on the Bearing Capacity of Footing on Reinforced Sand. Modares Civil Engineering journal, 21(3), 21-34.‏ [In Persian]
[6] Patel, A. (2019). Geotechnical investigations and improvement of ground conditions. Woodhead Publishing.‏
[7] Ouria, A., Toufigh, V., Desai, C., Toufigh, V., & Saadatmanesh, H. (2016). Finite element analysis of a CFRP reinforced retaining wall. Geomechanics and Engineering, 10(6), 757-774.‏ doi: 10.12989/gae.2016.10.6.757
[8] Racana, N., Grédiac, M., & Gourvès, R. (2003). Pull-out response of corrugated geotextile strips. Geotextiles and Geomembranes, 21(5), 265-288.‏ doi: 10.1016/S0266-1144(03)00031-1
[9] Aria, S., Kumar Shukla, S., & Mohyeddin, A. (2019). Numerical investigation of wraparound geotextile reinforcement technique for strengthening foundation soil. International Journal of Geomechanics, 19(4), 04019003.‏04019003. doi: 10.1061/(ASCE)GM.1943-5622.0001361
‏[10] Ouria, A., Heidarli, E., & Karamzadegan, S. (2022). Utilization of Recycled Concrete Aggregates as Coarse Material Sandwich to Improve the Pullout Strength of Geosynthetics in a Fine Sand. International Journal of Geosynthetics and Ground Engineering, 8(5), 1-15. doi: 10.1007/s40891-022-00401-2‏
‏[11] Han, F., Ganju, E., Prezzi, M., & Salgado, R. (2019). Closure to “Effects of interface roughness, particle geometry, and gradation on the sand–steel interface friction angle” by Fei Han, Eshan Ganju, Rodrigo Salgado, and Monica Prezzi. Journal of Geotechnical and Geoenvironmental Engineering, 145(11), 07019017.‏ doi: 10.1061/(ASCE)GT.1943-5606.0002172
‏[12] Martinez, A., & Frost, J. D. (2017). The influence of surface roughness form on the strength of sand–structure interfaces. Géotechnique Letters, 7(1), 104-111.‏ doi: 10.1680/jgele.16.00169
‏[13] Afzali-Nejad, A., Lashkari, A., & Shourijeh, P. T. (2017). Influence of particle shape on the shear strength and dilation of sand-woven geotextile interfaces. Geotextiles and Geomembranes, 45(1), 54-66.‏ doi: 10.1016/j.geotexmem.2016.07.005
[14] Toufigh, V., Ouria, A., Desai, C. S., Javid, N., Toufigh, V., & Saadatmanesh, H. (2016). Interface behavior between carbon-fiber polymer and sand. Journal of Testing and Evaluation, 44(1), 385-390.‏ doi: 10.1520/JTE20140153
‏[15] Amir, H., & Abdoos, S. (2020). Application of Lime and Portland cement for Improvement of Clay Contaminated with Anthracene and Glycerol. Civil Infrastructure Researches, 5(2), 111-122.‏ doi: 10.22091/cer.2020.5374.1198
‏[16] Ouria, A., Karamzadegan, S., & Emami, S. (2021). Interface properties of a cement coated geocomposite. Construction and Building Materials, 266, 121014.‏ doi: 10.1016/j.conbuildmat.2020.121014
‏[17] Ouria, A., Emami, S., & Karamzadegan, S. (2021). Laboratory Investigation of the Effect of the Cement Treatment of the Interface and the Thicknesses of Reinforcement on its Pull-out Capacity. Amirkabir Journal of Civil Engineering, 52(11), 2831-2846. doi 10.22060/ceej.2019.16191.6149
‏[18] Ouria, A., & Behboodi, T. (2017). Compressibility of cement treated soft soils. Journal of Civil and Environmental Engineering, 47(86), 1-9.‏ [In Persian]
‏[19] Ouria, A., Ranjbarnia, M., & Vaezipour, D. (2018). A failure criterion for weak cemented soils. Journal of Civil and Environmental Engineering, 48(92), 13-21.‏
‏[20] Ouria, A., & Mahmoudi, A. (2018). Laboratory and numerical modeling of strip footing on geotextile-reinforced sand with cement-treated interface. Geotextiles and Geomembranes, 46(1), 29-39.‏ doi: 10.1016/j.geotexmem.2017.09.003
‏[21] Khodaparast, M., Rajabi, A. M., & Kabi, A. (2017). The study of strength behavior of sandy soil mixed with plastic waste and cement slurry. Civil Infrastructure Researches, 2(2), 43-49. doi: 10.22091/cer.2017.828‏ [In Persian]
‏[22] Wahedy, M. N., & Rezaifar, O. (2022). Evaluation of sustainable development indicators of Infrastructures by replacing natural pozzolans with high silicate and alumina in cement-based mortar. Civil Infrastructure Researches, 9(1), 13-27.‏ doi: 10.22091/cer.2022.8267.1402 [In Persian]
‏[23] Hatami, K., Garcia, L. M., & Miller, G. A. (2011). A moisture reduction factor for pullout resistance of geotextile reinforcement in marginal soils. In Geo-Frontiers 2011: Advances in Geotechnical Engineering, 3576-3586.
‏[24] Sakr, M., El Naggar, M. H., & Nehdi, M. (2005). Interface characteristics and laboratory constructability tests of novel fiber-reinforced polymer/concrete piles. Journal of Composites for Construction, 9(3), 274-283. doi: 10.1061/(ASCE)1090-0268(2005)9:3(274)‏
‏[25] ASTM, D 2487. (2011). standard classification of soils for engineering purposes (unified soil classification system).  Annual Book of ASTM Standards, 4, 206-215.‏
‏[26] ASTM, D 3080-04. (2004). Standard Test Method for Direct Shear Test of Soils under Consolidated Drained Conditions. American Society for Testing and Materials, Philadelphia, Pennsylvania, USA.‏
‏[27] ASTM, D 2216-05. (2005). Standard test methods for laboratory determination of water (moisture) content of soil and rock by mass.‏ American Society for Testing and Materials, Philadelphia, Pennsylvania, USA.
‏[28] ASTM, C. 127-07. (2007). Standard test method for specific gravity and absorption of coarse aggregate. American Society for Testing and Materials, Philadelphia, Pennsylvania, USA.
‏[29] ASTM, D 4595-11. (2011). Standard Test Method for Tensile Properties of Geotextiles by the Wide-Width Strip Method, American Society for Testing and Materials, Philadelphia, Pennsylvania, USA.
‏[30] ASTM, D 5261-10. (2018). Standard Test Method for Measuring Mass per Unit Area of Geotextiles, American Society for Testing and Materials, Philadelphia, Pennsylvania, USA.
‏[31] Toufigh, V., Toufigh, V., & Ghaseminezhad, H. (2021). Experimental evaluation of the effect of moisture content and shear direction on the interface behavior of sand and fiber reinforcement polymer. Sharif Journal of Civil Engineering, 36.2(4.2), 91-99. doi: 10.24200/j30.2020.54723.2665 [In Persian]
‏[32] ASTM, D5321. (2014). Standard test method for determining the shear strength of soil-geosynthetic and geosynthetic interfaces by direct shear. Annual Book of ASTM Standards.‏-geosynthetic.
‏[33] ASTM, D5199. (2012). Standard test method for measuring the nominal thickness of geosynthetics. American Society for Testing and Materials, Philadelphia, Pennsylvania, USA.
‏[34] Nicholson, P. G. (2015). Admixture soil improvement. Soil improvement and ground modification methods, 231-288.‏
[35] Ebadi, M., Habibagahi, G., & Hataf, N. (2015). Effect of cement treatment on soil-non woven geotextile interface. Scientia Iranica, 22(1), 69-80.‏ [In Persian]
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