Title page for ETD etd-042711-144636

Document Type thesis

Author Name Kadhum, Saly Kadhum Saad

URN etd-042711-144636

Title Evaluation of the Effect of Flowing Water through Embedded Pipe on Rutting Of Pavement

Degree MS

Department Civil & Environmental Engineering

Advisors
Rajib B. Mallick, Advisor
Tahar ElKorchi, Committee Member
Mingjiang Tao, Committee Member
Sankha Bhowmick, Committee Member

Keywords
controlling pavement temperature
rutting control
rutting

Date of Presentation/Defense 2011-04-21

Availability unrestricted

Abstract
Flexible pavements are layered systems that consist of a sub-grade, sub-base, and the pavement surface layer. Pavement surface layer is a mixture of asphalt binder, coarse, and fine aggregates. The stiffness of asphalt materials is significantly reduced by an increase in temperature. The high heat capacity and the low thermal conductivity of pavement materials result in significant increase in temperature and hence increase in the potential of rutting or permanent deformation in asphalt pavements. Controlling of pavement temperature within a desirable range can be an efficient method to reduce rutting. In this study, the technique of lowering pavement temperature by using a fluid through pipes installed inside the pavement is being investigated. Pavement slabs of hot mix asphalt with and without inserted copper pipe were constructed in the Civil and Environmental Engineering laboratory, and the slabs were tested under high temperature with the Model Mobile Load Simulator 3 (MMLS3). The extraction of heat energy from asphalt pavements was achieved by flowing water through embedded pipe located at 1.5 inches below the surface. This technique resulted in a 10°C decrease in pavement temperature and a reduction of rutting depth from 0.65 inch (significant) to 0.1inch (insignificant). Rut depth and temperature data obtained at different locations along the pavement showed good correlation between surface temperature and rutting depth. The results show that the flowing water through embedded pipes is an effective way to reduce the surface temperature and thus to control rutting depth and prolong the life of pavement.

Files
SalyKadhumMSCEE2011.pdf

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Document Type	thesis
Author Name	Kadhum, Saly Kadhum Saad
URN	etd-042711-144636
Title	Evaluation of the Effect of Flowing Water through Embedded Pipe on Rutting Of Pavement
Degree	MS
Department	Civil & Environmental Engineering
Advisors	Rajib B. Mallick, Advisor Tahar ElKorchi, Committee Member Mingjiang Tao, Committee Member Sankha Bhowmick, Committee Member
Keywords	controlling pavement temperature rutting control rutting
Date of Presentation/Defense	2011-04-21
Availability	unrestricted
Abstract Flexible pavements are layered systems that consist of a sub-grade, sub-base, and the pavement surface layer. Pavement surface layer is a mixture of asphalt binder, coarse, and fine aggregates. The stiffness of asphalt materials is significantly reduced by an increase in temperature. The high heat capacity and the low thermal conductivity of pavement materials result in significant increase in temperature and hence increase in the potential of rutting or permanent deformation in asphalt pavements. Controlling of pavement temperature within a desirable range can be an efficient method to reduce rutting. In this study, the technique of lowering pavement temperature by using a fluid through pipes installed inside the pavement is being investigated. Pavement slabs of hot mix asphalt with and without inserted copper pipe were constructed in the Civil and Environmental Engineering laboratory, and the slabs were tested under high temperature with the Model Mobile Load Simulator 3 (MMLS3). The extraction of heat energy from asphalt pavements was achieved by flowing water through embedded pipe located at 1.5 inches below the surface. This technique resulted in a 10°C decrease in pavement temperature and a reduction of rutting depth from 0.65 inch (significant) to 0.1inch (insignificant). Rut depth and temperature data obtained at different locations along the pavement showed good correlation between surface temperature and rutting depth. The results show that the flowing water through embedded pipes is an effective way to reduce the surface temperature and thus to control rutting depth and prolong the life of pavement.
Files	SalyKadhumMSCEE2011.pdf