Low-Temperature Fracture Performance of Polymerized Sulfur Modified Asphalt Concrete Mixtures

Sepehr Ghafari; Fereidoon Moghadas Nejad; Hadi Kazemi

doi:10.4028/p-XnEVz3

Paper Titles

Stabilization of High Sulfate-Saline Soil with Lime, Ground Granulated Blast Furnace Slag (GGBFS), and Basic Oxygen Furnace Slag (BOFS)
p.125

Theoretical Background of Self-Healing in Asphalt Concrete
p.133

Developing a Single-Specimen Technique for Low-Temperature R-Curve Determination of Asphalt Concrete Using a Modified Unloading Compliance Method
p.141

Use of Basic Oxygen Furnace Slag (BOFS) in Superpave Mix Design: BOFS Aggregate Properties
p.147

Low-Temperature Fracture Performance of Polymerized Sulfur Modified Asphalt Concrete Mixtures
p.155

Computer Simulation for Energy-Efficient Buildings Integrated with Developed Phase Change Material (PCM)
p.161

Inspection of Thermo-Mechanical Behavior on Sintered Fly Ash Aggregate in Pavement Quality Concrete
p.167

Influence of Fiber Content on the Flexural Strength and Physical Properties of Abaca Fiber-Cement-Gypsum Board
p.173

Degradation and Microstructure of Palmdate Fibers-High Performance Cementitious Boards Exposed to Aging Conditions
p.185

HomeKey Engineering MaterialsKey Engineering Materials Vol. 951Low-Temperature Fracture Performance of...

Low-Temperature Fracture Performance of Polymerized Sulfur Modified Asphalt Concrete Mixtures

Abstract:

In this research, asphalt concrete (AC) mixtures modified by polymerized Sulfur were prepared. PG58-22 bitumen was used as the base binder for the mixtures along with crushed siliceous aggregate. The base binder was replaced by 20%, 30%, and 50% ratios with polymerized Sulfur in the modified mixtures while the reference mix was fabricated with 0% binder replacement. Single edge notched-beam fracture tests (SE(B)) were carried out in a temperature range of 0 °C to-20 °C on the AC beam specimens. Load-displacement curves were obtained from the experiments and the fracture energy of the mixtures could be determined. It was revealed that modifying the mixtures with polymerized Sulfur could improve the load bearing of the beam specimens as higher peak load values were recorded at fracture. However, fracture failure of the AC beams occurred at lower values of displacement addressing further embrittlement of the mixtures due to replacement of the base binder. Higher contents of polymerized Sulfur in the mixtures resulted in higher magnitudes of fracture energy as a general trend in this research addressing an improved resistance to low-temperature cracking.

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Periodical:

Key Engineering Materials (Volume 951)

Pages:

155-160

DOI:

https://doi.org/10.4028/p-XnEVz3

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Online since:

August 2023

Authors:

Sepehr Ghafari*, Fereidoon Moghadas Nejad, Hadi Kazemi

Keywords:

Asphalt Concrete, Binder, Fracture Energy, Peak Load, Polymerized Sulfur, Single-Edge Notched Beam

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