Article: Grouting - an effective method for reducing the permeability of sandy soils Journal: International Journal of Hydrology Science and Technology (IJHST) 2024 Vol.18 No.1 pp.57 - 76 Abstract: Grouting is normally undertaken to reduce the permeability of rock or soil formations and this process is used extensively in the construction of hydraulic structures such as dams, tunnels and in a wide variety of special cases. Even though the application of the grouting technique to reduce the permeability of rock formations has been reported in literature, no serious attempts are reported about the effective use of this technique to reduce the permeability of soil formations. In this paper, an attempt has been made to study the effectiveness of grouting in reducing the permeability of the granular medium. Constant head permeability tests were carried out on the sand medium treated with different grouting materials such as cement, bentonite, lime, locally available clay and different combinations of the above materials. By grouting with different grout materials (e.g., in the case of cement - bentonite grout) the permeability of the medium sand got reduced from 10-4 m/s to 10-9 m/s. The present study undoubtedly proves the effectiveness of using grouting as an efficient technique in reducing the permeability of sandy soils. Inderscience Publishers - linking academia, business and industry through research

Title: Grouting - an effective method for reducing the permeability of sandy soils

Authors: A.C. Sekhar; Benny Mathews Abraham; T.G. Santhosh Kumar; A. Sridharan

Addresses: School of Engineering, Cochin University of Science and Technology, Kochi, 682022, India ' CUSAT and HoD of Civil Engineering, AISAT, Kochi – 682022, India ' Jai Barath College of Management and Engineering Technology, Arakkapady, Vengola P.O., Perumbavoor, Kerala, 683556, India ' Indian Institute of Science, CV Raman Rd., Bangalore, Karnataka, 560012, India

Abstract: Grouting is normally undertaken to reduce the permeability of rock or soil formations and this process is used extensively in the construction of hydraulic structures such as dams, tunnels and in a wide variety of special cases. Even though the application of the grouting technique to reduce the permeability of rock formations has been reported in literature, no serious attempts are reported about the effective use of this technique to reduce the permeability of soil formations. In this paper, an attempt has been made to study the effectiveness of grouting in reducing the permeability of the granular medium. Constant head permeability tests were carried out on the sand medium treated with different grouting materials such as cement, bentonite, lime, locally available clay and different combinations of the above materials. By grouting with different grout materials (e.g., in the case of cement - bentonite grout) the permeability of the medium sand got reduced from 10^-4 m/s to 10^-9 m/s. The present study undoubtedly proves the effectiveness of using grouting as an efficient technique in reducing the permeability of sandy soils.

Keywords: ground improvement; ground water management; grouting; soil permeability; sub-surface barriers.

DOI: 10.1504/IJHST.2024.139405

International Journal of Hydrology Science and Technology, 2024 Vol.18 No.1, pp.57 - 76

Received: 19 Mar 2022
Accepted: 13 Feb 2023
Published online: 02 Jul 2024 *

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Title: Grouting - an effective method for reducing the permeability of sandy soils

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