EAS Doctoral Proposal Defense Presensation by Ibrahim Abdalfattah
When: Thursday,
January 21, 2021
10:00 AM
-
12:00 PM
Where: Online
Description: EAS Doctoral Proposal Defense Presentation by
by Ibrahim Abdalfattah
Date: January 21, 2021
Time: 10:00 a.m. - 12:00 p.m.
Topic: Recycled Plastics Modified Asphalt Binders and Mixtures: Performance Characteristics and Environmental Impact
Zoom Teleconference:
https://umassd.zoom.us/j/94648196799?pwd=SjV1VXpRWTVSWjBNVDJsOVBXRFJxZz09
Meeting ID: 946 4819 6799
Passcode: 931518
Abstract:
During the past decade, there has been a rapid growth in global plastic production, however, only a small proportion of plastic waste is recycled and the rest ended up in landfills and oceans. Recently, the US waste plastic became a critical issue and received much attention, especially, the US plastic recycling rate is less than 10% of the total annual plastic waste. Currently, there is a growing interest in the possibility of using recycled plastic in the asphalt industry as an attempt to reduce the amount of plastics that are send to the landfills. Infusing plastic into highways construction may contribute towards better environmental quality and sustainable development, especially, the highway construction industry is one of the largest material consuming industries in the world. On the other hand, there are equal concerns which are expressed over the feasibility of using recycled plastic on the performance of modified asphalt binders and mixtures and the negative environmental impact if toxic pollutants leach out during the pavement service life.
The proposed research study aims at evaluating and quantifying the effect of using the recycled polyethylene (RPE) which is the major plastic waste substance as a modifier on the properties of conventional asphalt binders and mixtures. Different sources of RPEs, asphalt binders, virgin aggregates including low- and high- absorptive aggregates will be used in the developing of modified asphalts and mixtures to understand and evaluate the effect of each parameter on the performance of the RPE modified asphalt and mixture. Asphalt binder rheological evaluation testing will include performance grading (PG), multiple stress creep recovery (MSCR), extended BBR, delta Tc (ΔTc), and Double Edge Notched Tension (DENT). Moreover, the ductility and cracking susceptibility among different binders after extended aging will be characterized. In this research, two laboratory-produced 12.5-mm and 9.5-mm nominal maximum aggregate size (NMAS) Superpave mixes will be designed as control mixtures then a comprehensive study will be conducted to evaluate the laboratory performance of RPE modified asphalt mixtures with regard to permanent deformation, moisture-induced damage, intermediate- and low-temperature cracking. In addition, the environmental impacts of RPE after subjecting mixtures to accelerated weathering conditions will be investigated using the System for Weathering Infrastructure Materials (SWIM). The SWIM is a custom designed device that exposes infrastructure materials to extended periods of UV aging (radiation & heat from UV exposure), as well as periods of intermittent moisture (rain).
Furthermore, the impact of different RPEs on in-situ rutting and bottom-up fatigue cracking performance will be analyzed by the AASHTOWare Pavement ME Design software based on level 1 inputs. The predicted performance curves and pavement preservation and rehabilitation strategies will be used to conduct Life Cycle Cost Analysis (LCCA) to evaluate the overall life-cycle cost of pavements utilizing RPE.
ADVISOR(S): Dr. Walaa Mogawer, Department of Civil & Environmental Engineering
(wmogawer@umassd.edu, 508-910-9824)
COMMITTEE MEMBERS: Prof. Ramon Bonaqist, P.E.
Prof. Eyad Masad, P.E., F.ASCE
Dr. Tracie Ferreira, Department of Bioengineering
Dr. Alireza Asadpoure, Department of Civil & Environmental
Engineering
NOTE: All EAS Students are ENCOURAGED to attend.
by Ibrahim Abdalfattah
Date: January 21, 2021
Time: 10:00 a.m. - 12:00 p.m.
Topic: Recycled Plastics Modified Asphalt Binders and Mixtures: Performance Characteristics and Environmental Impact
Zoom Teleconference:
https://umassd.zoom.us/j/94648196799?pwd=SjV1VXpRWTVSWjBNVDJsOVBXRFJxZz09
Meeting ID: 946 4819 6799
Passcode: 931518
Abstract:
During the past decade, there has been a rapid growth in global plastic production, however, only a small proportion of plastic waste is recycled and the rest ended up in landfills and oceans. Recently, the US waste plastic became a critical issue and received much attention, especially, the US plastic recycling rate is less than 10% of the total annual plastic waste. Currently, there is a growing interest in the possibility of using recycled plastic in the asphalt industry as an attempt to reduce the amount of plastics that are send to the landfills. Infusing plastic into highways construction may contribute towards better environmental quality and sustainable development, especially, the highway construction industry is one of the largest material consuming industries in the world. On the other hand, there are equal concerns which are expressed over the feasibility of using recycled plastic on the performance of modified asphalt binders and mixtures and the negative environmental impact if toxic pollutants leach out during the pavement service life.
The proposed research study aims at evaluating and quantifying the effect of using the recycled polyethylene (RPE) which is the major plastic waste substance as a modifier on the properties of conventional asphalt binders and mixtures. Different sources of RPEs, asphalt binders, virgin aggregates including low- and high- absorptive aggregates will be used in the developing of modified asphalts and mixtures to understand and evaluate the effect of each parameter on the performance of the RPE modified asphalt and mixture. Asphalt binder rheological evaluation testing will include performance grading (PG), multiple stress creep recovery (MSCR), extended BBR, delta Tc (ΔTc), and Double Edge Notched Tension (DENT). Moreover, the ductility and cracking susceptibility among different binders after extended aging will be characterized. In this research, two laboratory-produced 12.5-mm and 9.5-mm nominal maximum aggregate size (NMAS) Superpave mixes will be designed as control mixtures then a comprehensive study will be conducted to evaluate the laboratory performance of RPE modified asphalt mixtures with regard to permanent deformation, moisture-induced damage, intermediate- and low-temperature cracking. In addition, the environmental impacts of RPE after subjecting mixtures to accelerated weathering conditions will be investigated using the System for Weathering Infrastructure Materials (SWIM). The SWIM is a custom designed device that exposes infrastructure materials to extended periods of UV aging (radiation & heat from UV exposure), as well as periods of intermittent moisture (rain).
Furthermore, the impact of different RPEs on in-situ rutting and bottom-up fatigue cracking performance will be analyzed by the AASHTOWare Pavement ME Design software based on level 1 inputs. The predicted performance curves and pavement preservation and rehabilitation strategies will be used to conduct Life Cycle Cost Analysis (LCCA) to evaluate the overall life-cycle cost of pavements utilizing RPE.
ADVISOR(S): Dr. Walaa Mogawer, Department of Civil & Environmental Engineering
(wmogawer@umassd.edu, 508-910-9824)
COMMITTEE MEMBERS: Prof. Ramon Bonaqist, P.E.
Prof. Eyad Masad, P.E., F.ASCE
Dr. Tracie Ferreira, Department of Bioengineering
Dr. Alireza Asadpoure, Department of Civil & Environmental
Engineering
NOTE: All EAS Students are ENCOURAGED to attend.
Contact: > See Description for contact information
Topical Areas: Students, Students, Graduate, Students, Undergraduate, Bioengineering, Civil and Environmental Engineering, College of Engineering, Computer and Information Science, Co-op Program, Electrical and Computer Engineering, Mechanical Engineering, Physics