A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of the Cracking Resistance and Fracture Energy of Sustainable Asphalt Mixtures Containing Reclaimed Asphalt Pavement
Asphalt pavement production and construction needs substantial amount of energy and non-renewable materials. Therefore, using recycled materials seems necessary to create more sustainable asphalt concrete pavements. This article aims to examine the performance of sustainable asphalt mixtures incorporating reclaimed asphalt pavement and investigate and evaluate the cracking resistance of the produced mixtures. To achieve the study objectives, an experimental program was designed for the hot asphalt mixtures using four different bitumen contents (4.5, 5.0, 5.5, and 6.0%), four RAP contents (20%, 40%, 60%, and 80%), in addition to a control mix (without RAP). Marshall Test method was used to investigate the volumetric and mechanical properties of the prepared asphalt mixtures containing RAP. The load-displacement analysis was performed to investigate and evaluate the indices of cracking resistance, fracture energy and fracture work density by using Indirect Tensile Testing program. The results indicated that the volumetric and mechanical properties; stability, Stiffness, and density of the mixtures containing RAP are greatly similar to those of the hot asphalt mixture without RAP. The analysis of indirect tensile strength results indicated that the cracking parameters; CT Index, CRI Index and FST Index containing 40% RAP are higher than those of the other RAP mixtures. Statistical analysis showed that Stiffness, stability, air void and flow of RAP mixtures were significant. Also, the fracture energy, indirect tensile strength and fracture work density of RAP mixes were not significantly different from the control mix except in some cases.
Evaluation of the Cracking Resistance and Fracture Energy of Sustainable Asphalt Mixtures Containing Reclaimed Asphalt Pavement
Asphalt pavement production and construction needs substantial amount of energy and non-renewable materials. Therefore, using recycled materials seems necessary to create more sustainable asphalt concrete pavements. This article aims to examine the performance of sustainable asphalt mixtures incorporating reclaimed asphalt pavement and investigate and evaluate the cracking resistance of the produced mixtures. To achieve the study objectives, an experimental program was designed for the hot asphalt mixtures using four different bitumen contents (4.5, 5.0, 5.5, and 6.0%), four RAP contents (20%, 40%, 60%, and 80%), in addition to a control mix (without RAP). Marshall Test method was used to investigate the volumetric and mechanical properties of the prepared asphalt mixtures containing RAP. The load-displacement analysis was performed to investigate and evaluate the indices of cracking resistance, fracture energy and fracture work density by using Indirect Tensile Testing program. The results indicated that the volumetric and mechanical properties; stability, Stiffness, and density of the mixtures containing RAP are greatly similar to those of the hot asphalt mixture without RAP. The analysis of indirect tensile strength results indicated that the cracking parameters; CT Index, CRI Index and FST Index containing 40% RAP are higher than those of the other RAP mixtures. Statistical analysis showed that Stiffness, stability, air void and flow of RAP mixtures were significant. Also, the fracture energy, indirect tensile strength and fracture work density of RAP mixes were not significantly different from the control mix except in some cases.
Evaluation of the Cracking Resistance and Fracture Energy of Sustainable Asphalt Mixtures Containing Reclaimed Asphalt Pavement
Mohamed Elewa (author) / Ahmed Abdallah (author) / Hassan Hassanin (author)
2025
Article (Journal)
Electronic Resource
Unknown
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| Taylor & Francis Verlag | 2019
Cracking Resistance Evaluation of Mixtures with High Percentages of Reclaimed Asphalt Pavement
| British Library Online Contents | 2017
Cracking Resistance Evaluation of Mixtures with High Percentages of Reclaimed Asphalt Pavement
| Online Contents | 2016