Mechanical and environmental analysis of granular subbase with fine crumb rubber

Fontalvo, José Eduardo Salcedo; Vega A., Daniela L.; Castro Cabeza, Andrea; Lozano, Camilo Ramirez; Rengifo, Sainner Lopez

doi:10.1007/s13369-024-09041-2

Mechanical and environmental analysis of granular subbase with fine crumb rubber

Publication date

2024-05-13

Document type

Forschungsartikel

Author

Fontalvo, José Eduardo Salcedo

Vega A., Daniela L.

Castro Cabeza, Andrea

Lozano, Camilo Ramirez

Rengifo, Sainner Lopez

Organisational unit

Konstruktionswerkstoffe und Bauwerkserhaltung

DOI

10.1007/s13369-024-09041-2

URI

https://openhsu.ub.hsu-hh.de/handle/10.24405/22811

Publisher

Springer

Series or journal

Arabian Journal for Science and Engineering

ISSN

2191-4281

Periodical volume

49

Periodical issue

10

First page

14389

Last page

14401

Peer-reviewed

✅

Part of the university bibliography

✅

Language

English

Abstract

The increasing manufacturing of tires, driven by the automotive sector, has led to various sustainability and waste management issues. Consequently, it is necessary to explore alternatives for the reuse of these wastes. Rubber has demonstrated properties that could make it an attractive material for use as a granular aggregate. The aim of this study is to evaluate the influence of crumb rubber (CR) on the mechanical behavior of a granular subbase (GSB) by replacing fine CR at 10% and 15%. An environmental analysis of the proposal was conducted using the SimaPro tool, and a series of laboratory tests were performed to assess physical and mechanical characteristics. The strength results indicate a decreasing trend as the CR content in the GSB increases. Specifically, in abrasion tests, the natural material showed an average result of 30.86%, while the mixes with 10% and 15% CR exceeded the maximum limit (50%), achieving results of 59.24% and 53.98%, respectively. In terms of the California Bearing Ratio (CBR), only the natural samples compacted at maximum energy exceeded the minimum requirements for low and medium traffic levels (30%). The highest CBR value for samples containing CR was 5%, whereas the natural GSB reached a maximum CBR of 33%. A similar trend is observed in environmental outcomes, with increases of up to 17% in abiotic depletion for the sample with 15% CR. Overall, the environmental analysis suggests that incorporating CR into the GSB could lead to an increase in various environmental impacts.

Description

This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/).

Version

Published version

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