Next Article in Journal
Complete Recycling of Composite Material Comprising Polybutylene Terephthalate and Copper
Previous Article in Journal
Potential and Recycling Strategies for LCD Panels from WEEE
Article Menu

Export Article

Open AccessArticle
Recycling 2017, 2(2), 8; doi:10.3390/recycling2020008

Properties of Shredded Roof Membrane–Sand Mixture and Its Application as Retaining Wall Backfill under Static and Earthquake Loads

Glenn Department of Civil Engineering, Clemson University, 202 Lowry Hall, Clemson, SC 29634, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Michele Rosano
Received: 6 December 2016 / Revised: 23 March 2017 / Accepted: 30 March 2017 / Published: 5 April 2017
View Full-Text   |   Download PDF [2658 KB, uploaded 5 April 2017]   |  

Abstract

About 20 billion square feet of Ethylene Propylene Diene Monomer (EPDM) rubber is installed on roofs in the United States and most of them will be reaching the end of their lifespan soon. The purpose of this study is to investigate potential reuses of this rubber in Civil Engineering projects rather than disposing it into landfills. First, laboratory tests were performed on various shredded rubber-sand mixtures to quantify the basic geotechnical engineering properties. The laboratory test results show that the shredded rubber-sand mixture is lightweight with good drainage properties and has shear strength parameters comparable to sand. This indicates that the rubber-sand mixture has potential to be used for retaining wall backfill and many other projects. To assess the economic advantage of using shredded rubber-sand mixtures as a lightweight backfill for retaining walls subjected to static and earthquake loadings, geotechnical designs of a 6 m tall gravity cantilever retaining wall were performed. The computed volume of concrete to build the structural components and volume of backfill material were compared with those of conventional sand backfill. Results show significant reductions in the volume of concrete and backfill material in both static and earthquake loading conditions when the portion of shredded rubber increased in the mixture. View Full-Text
Keywords: shredded EPDM rubber; roof membrane; lightweight fill; retaining wall backfill shredded EPDM rubber; roof membrane; lightweight fill; retaining wall backfill
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Livingston, B.; Ravichandran, N. Properties of Shredded Roof Membrane–Sand Mixture and Its Application as Retaining Wall Backfill under Static and Earthquake Loads. Recycling 2017, 2, 8.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Recycling EISSN 2313-4321 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top