Location
Chamberlain Student Center
Document Type
Poster
College
Henry M. Rowan College of Engineering
Event Website
https://research.rowan.edu/rowan-research-days-2024.html
Start Date
26-3-2024 12:00 PM
End Date
26-3-2024 3:00 PM
Abstract
Asphalt pavements face significant challenges due to low temperature cracking and rutting caused by extreme temperature fluctuations and traffic loading. These issues result in higher maintenance costs and reduced service life of the pavements. To address this, researchers explored the use of Microencapsulated Phase Change Materials (MPCMs) to induce thermoregulation in asphalt pavements. However, the existing research focused on high-temperature performance of binders, highlighting the need of research on evaluating the low-temperature performance. Therefore, the study aims to evaluate the impact of incorporating MPCMs on low to high temperature performance of binders. Three types of MPCMs were incorporated into asphalt binder with melting points of 6°C (MPCM6D), 28°C (MPCM28D) and 37°C (MPCM37D) at varying dosages (5%, 10%, and 20%) using a low shear mixture. The thermoregulation property and performance of binders were studied. Differential scanning calorimeter analysis was conducted to verify thermoregulation properties and assess the survival of capsules during blending. The low temperature cracking resistance was evaluated by measuring creep stiffness and creep rate using Bending Beam Rheometer (BBR). The behavior within and outside MPCMs thermoregulation range was assessed by examining complex shear modulus (G*) change rate through temperature sweep test. The results showed that enthalpy change increased with increase in MPCMs dosage, indicating effective thermoregulation and capsule survival. Due to steady state test conditions, BBR could not able to capture the low temperature performance of MPCM binders. The temperature sweep test indicated that G* change rate was not constant, illustrating that near the melting points, MPCMs could thermoregulate stiffness of binder. In conclusion, outside the thermoregulation range, all MPCMs positively impacted rutting resistance while compromising fatigue and low-temperature cracking attributable to physical interaction of MPCMs with binder. Within the thermoregulation range, MPCM6D and MPCM 28D effectively enhanced low and intermediate temperature cracking resistance whereas MPCM37D enhanced rutting resistance.
Included in
Civil Engineering Commons, Geotechnical Engineering Commons, Transportation Engineering Commons
Performance Assessment of Microencapsulated Phase Change Materials with Low to High Thermoregulation Range in Asphalt Binder
Chamberlain Student Center
Asphalt pavements face significant challenges due to low temperature cracking and rutting caused by extreme temperature fluctuations and traffic loading. These issues result in higher maintenance costs and reduced service life of the pavements. To address this, researchers explored the use of Microencapsulated Phase Change Materials (MPCMs) to induce thermoregulation in asphalt pavements. However, the existing research focused on high-temperature performance of binders, highlighting the need of research on evaluating the low-temperature performance. Therefore, the study aims to evaluate the impact of incorporating MPCMs on low to high temperature performance of binders. Three types of MPCMs were incorporated into asphalt binder with melting points of 6°C (MPCM6D), 28°C (MPCM28D) and 37°C (MPCM37D) at varying dosages (5%, 10%, and 20%) using a low shear mixture. The thermoregulation property and performance of binders were studied. Differential scanning calorimeter analysis was conducted to verify thermoregulation properties and assess the survival of capsules during blending. The low temperature cracking resistance was evaluated by measuring creep stiffness and creep rate using Bending Beam Rheometer (BBR). The behavior within and outside MPCMs thermoregulation range was assessed by examining complex shear modulus (G*) change rate through temperature sweep test. The results showed that enthalpy change increased with increase in MPCMs dosage, indicating effective thermoregulation and capsule survival. Due to steady state test conditions, BBR could not able to capture the low temperature performance of MPCM binders. The temperature sweep test indicated that G* change rate was not constant, illustrating that near the melting points, MPCMs could thermoregulate stiffness of binder. In conclusion, outside the thermoregulation range, all MPCMs positively impacted rutting resistance while compromising fatigue and low-temperature cracking attributable to physical interaction of MPCMs with binder. Within the thermoregulation range, MPCM6D and MPCM 28D effectively enhanced low and intermediate temperature cracking resistance whereas MPCM37D enhanced rutting resistance.
https://rdw.rowan.edu/grad_student_symposium/2024/mar26/9
Comments
Dr. Anil Kumar Baditha is a Post-Doctoral Associate and Ayyaz Fareed is a Ph.D. student in the Center for Research and Education in Advanced Transportation Engineering under Dr. Yusuf Mehta.