Experimental Evaluation of Applicability of Demolition Waste Material to Improve the Interface Parameters of Geotextile and Sand

Authors

1 PhD candidate , Mohaghegh Ardabili University, Ardabil, Iran

2 Department of Civil Engineering, University of Mohaghegh Ardabili

Abstract

In this research, three types of materials recycled from waste clay blocks, ceramic and porcelain tiles were used to improve the interface properties of a fine sand and a woven geotextile. The interface properties of the sand and the geotextile were studied conducting several pullout tests. In order to improve the interface of the sand and the geotextile, recycled materials were used as coarse material sandwich with at the interface with different thicknesses of 2 cm, 4cm, and 8 cm. The pullout tests were carried out under normal stresses of 25 kPa, 50 kPa, and 75 kPa. The results of these tests indicated a considerable improvement on the pullout capacity of the geotextile in the sand with recycled material improved interface. The shear strength of the recycled material improved interface of the geotextile and the sand depends on the type and the thickness of the coarse material sandwich and the level of the normal stress at the interface. Increasing the thickness of the recycled material sandwich increased the pull-out capacity of the reinforcement. There is an optimal thicknesses of recycled sandwich layer to achieve the maximum pull-out capacity. The pull-out capacity of a reinforcement in sand encased with a recycled sandwich layer with thickness of 4 cm was approximately equal to the pullout capacity of the same reinforcement in recycled material. The results of these experiments indicated that the maximum pull-out capacity of reinforcement has been achieved when the reinforcement was encased with material recycled from ceramic.

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Journal of Civil and Environmental Engineering

Articles in Press, Accepted Manuscript
Available Online from 18 October 2022

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