Author

Lama El Hatow

Abstract

This thesis aims to investigate the potential usage of rejected non-recyclable contaminated plastic rejects with different reinforcing elements to produce a viable product such as a manhole cover. Contaminated plastic rejects are generally deemed unrecyclable due to the cost and effort, including money, water, energy associated with cleaning the product in order to recycle it. By recycling these contaminated plastic rejects as is and reinforcing it with different reinforcing elements, we can enhance the mechanical properties of the material to enable it to be used as a viable, durable product such as a manhole cover. Problems associated with manhole covers include theft of the cover, leaving a large massive hole in the ground causing a potential health hazard and possible safety risk. This thesis will investigate the mechanical and environmental properties of the plastic rejects when reinforced with foundry sand, regular sand, fiberglass-milled fibers, and fiberglass-chopped strands and to determine which one of these reinforcing elements is the most suitable at different percentages. It was determined that foundry sand and regular sand at 10% reinforcement gave the most promising results in terms of tensile strength and flexural strength with ultimate tensile strengths for both materials of about 19MPa. Once the most suitable mixture was determined, analyzing this mixture in the application of a manhole cover is necessary to determine its applicability as this product. The manhole covers were tested for the most suitable mixtures without reinforcing steel bars, and again with reinforcing steel bars to determine the effect of the steel mesh on the properties of the manhole cover. It was determined that the combination of foundry sand at 10% reinforcement with a steel reinforcement mesh of Φ16 steel bars of 10% reinforcement, and the plastic rejects gave the most promising results with a maximum load of 108 KN. In comparison to BS EN 124 British Standards for manhole covers, it was found that this manhole cover could replace Grades B and A of ductile iron manhole covers of the same diameter size. Grades B and A refer to areas with only occasional vehicular passageway, and pedestrian precincts with no vehicular passageway respectively. With this new material produced entirely out of waste, this product will no longer become an issue in terms of theft and will alleviate the detrimental problem of municipal solid waste to the environment including saving energy, water, and cost.

Department

Environmental Engineering Program

Degree Name

MS in Environmental Engineering

Date of Award

6-1-2007

Online Submission Date

March 2013

First Advisor

El Haggar, Salah

Committee Member 1

El Haggar, Salah

Document Type

Thesis

Extent

122 p.

Rights

The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. The author has granted the American University in Cairo or its agents a non-exclusive license to archive this thesis, dissertation, paper, or record of study, and to make it accessible, in whole or in part, in all forms of media, now or hereafter known.

IRB

Not necessary for this item

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