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Applicability of Waste Rubber Particles as Buried Pipe Backfill Material

  • Geotechnical Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

The primary purpose of this work is to evaluate the viability of using waste rubber particles as buried pipe backfill. By applying confined compression test and model test, this research studied the compressibility of sand and rubber-sand mixtures (RSM) and also, investigated the behavior of pipe surrounded by sand and RSM subjected to impact loading. The findings are as follows: 1) The vertical elastic strain and plastic strain of compression test samples increase with rubber content, and the elastic strain and plastic strain of saturated samples are greater than those of dry samples. 2) The settlement of RSM model soil is greater than that of pure sand model soil subjected to impact loading. The addition of rubber particles to pure sand reduces the earth pressure increment. The cumulative strain of pipe surrounded by dry RSM is less than that surrounded by dry pure sand. However, the cumulative strain of pipe surrounded by saturated RSM is greater than that surrounded by saturated pure sand. This investigation provides an environmentally friendly approach for recycling waste tire particles in geotechnical engineering.

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Abbreviations

C c :

Curvature coefficient

C u :

Uniformity coefficient

D :

Vertical settlement

d 50 :

Mean diameter

e max :

Maximum void ratio

e min :

Minimum void ratio

E s :

Compression modulus

G s :

Specific gravity

P :

Earth pressure

ε d :

Vertical strain

σ d :

Vertical stress

ΔD :

Permanent vertical settlement

ΔP :

Average earth pressure increment

ΔP I :

Average earth pressure increment for Loading I

ΔP II :

Average earth pressure increment for Loading II

ΔP III :

Average earth pressure increment for Loading III

Δs :

Strain increment

ΔS I :

Strain increment for Loading I

ΔS II :

Strain increment for Loading II

ΔS III :

Strain increment for Loading III

Σs :

Cumulative strain

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Acknowledgments

This work was supported by the Project of the National Natural Science Foundation of China (No. 51508236), the Natural Science Foundation of Jiangsu Province (No. BK20150519), the China Postdoctoral Science Foundation (No. 2015M580397) and the Research Foundation for Advanced Talents of Jiangsu University (No. 15JDG172).

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Correspondence to Enquan Zhou.

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Zhou, E., Zong, Z. Applicability of Waste Rubber Particles as Buried Pipe Backfill Material. KSCE J Civ Eng 25, 1609–1620 (2021). https://doi.org/10.1007/s12205-021-0586-8

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  • DOI: https://doi.org/10.1007/s12205-021-0586-8

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