Use of recycled glass and crumb rubber in asphalt

Cooper, Jonathan (2016) Use of recycled glass and crumb rubber in asphalt. BEng dissertation, University of Portsmouth.

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    This research project investigates the uses of crumb rubber and glass in asphalt pavements, undertakes testing upon three asphalt mixes containing crumb rubber and glass and analyses the results.
    Today’s society relies heavily upon the transport network and in particular the highway, for moving of peoples and goods. It is important that these highways are maintained to a high standard to prevent delays to the network or incur increasing costs.
    A concern surrounding the environment with the respect to waste and the use of the world’s natural resources is also an area of high current interest. On a whole, municipal waste is on the rise. However, more and more of the waste produced is being recycled and innovative solutions to recycle and reuse must be found.
    This research project investigated using crumb rubber and glass in Hot Rolled Asphalt. A control mix of HRA 35/14F surf 40/60 bin rec was used and the fine aggregates were replaced by equal amounts of glass and crumb rubber at 25%, 50% and 75% replacement.
    The experimental and control samples were subjected to Marshall testing and the results analysed. It was found that as the replacement of fine aggregates increased, the samples became less dense, had a higher void content, became less stable and had an increased flow rate. The Marshall Quotient was found for each of the sample mixes giving values of 1.46, 0.56, 0.26 and 0.19 for the control, 25%, 50% and 75% replacement mixes respectively.
    It was concluded that the replacement of fine aggregates with crumb rubber and glass did not perform as well as the control mix and that this was caused by the crumb rubber content being too high. It was recommended that the use of glass and crumb rubber in HRA materials be continued to be investigated with the reduction of crumb rubber content and an increase of glass.

    Item Type: Dissertation
    Departments/Research Groups: Faculty of Technology > School of Civil Engineering and Surveying
    Depositing User: Beth Atkins
    Date Deposited: 01 Sep 2016 12:37
    Last Modified: 01 Sep 2016 12:37

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