Roles of artificial intelligence in construction engineering and management: A critical review and future trends

100% recycled hot mix asphalt lab samples were modified with five generic and one proprietary rejuvenators at 12% dose and tested for binder and mixture properties. Waste Vegetable Oil, Waste Vegetable Grease, Organic Oil, Distilled Tall Oil, and Aromatic Extract reduced the Superpave performance grade (PG) from 94–12 of extracted binder to PG 64-22 while waste engine oil required higher dose. All products ensured excellent rutting resistance while providing longer fatigue life when compared to virgin mixtures and most lowered critical cracking temperature. Rejuvenated samples required more compaction energy compared to virgin and some oils reduced moisture resistance slightly.

Influence of Six Rejuvenators on the Performance Properties of Reclaimed Asphalt Pavement (RAP) Binder and 100% Recycled Asphalt Mixtures

Energy consumption and environmental impact of rubberized asphalt pavement

Application of rejuvenators to improve the rheological and mechanical properties of asphalt binders and mixtures: A review

A Literature Review on Cold Recycling Technology of Asphalt Pavement

An experimental study on fatigue properties of emulsion and foam cold recycled mixes

Traditionally, asphalt pavement maintenance mainly considers pavement performance and cost and largely ignores the environment while substantial amount of environmental burdens are released in the process. In this study, a multi-objective optimization model was developed integrating the three elements in order to optimize the asphalt pavement maintenance plans at the project level. Pavement performance element was decided as the multiplier of pavement serviceability index and traffic volume. Cost element was represented by the net present value, including components of agency cost, vehicle operation cost and salvage value. Environmental element, integrating energy consumption, global warming potential, acidification potential and respiratory effects potential, was measured by the life cycle assessment model. A hypothetic asphalt pavement maintenance case study was conducted using the developed multi-objective optimization model and harvested 103 sets of feasible combinations of maintenance plans, each of which is non-dominated by the others. Trade-offs analysis was performed among the three objectives and visualized in both two- and three-dimension forms. It is found there is an opportunity of reducing the cost and environmental impacts to 80.3% and 77.8% and increasing the pavement performance to 146.6% compared to the base case. However, they are mutually compromised and cannot be reached simultaneously. The developed model reveals the quantitatively interactive relationship of the three objectives and helps optimize the asphalt pavement maintenance plans.

Multi-objective optimization for asphalt pavement maintenance plans at project level: Integrating performance, cost and environment

Inappropriate maintenance and rehabilitation strategies cause many problems such as maintenance budget waste, ineffective pavement distress treatments, and so forth. A method based on a ma...

Deep reinforcement learning for long‐term pavement maintenance planning

Reflective cracking is a combination of Mode I (opening) and Mode II (sliding) fracture, or Mixed-Mode fracture. The Single-Edge Notch Beam [SE(B)] test was used to analyze Mixed-Mode fracture characteristics of three asphalt concrete mixtures in the laboratory. The peak loads were similar across all three mixtures, emphasizing the importance of fracture mechanics when analyzing low temperature characteristics of asphalt concrete. The fracture work successfully differentiated the three mixtures, and showed that the fracture work increased as the level of Mode II increased. Simulations showed the damage in the mixtures evolved differently, with the more compliant mixtures showing a higher percentage of dissipated creep damage, and the more quasi-brittle mixture showing a higher percentage of dissipated fracture damage.

Fujian Ni

Papers

An experimental study on fatigue properties of emulsion and foam cold recycled mixes

Multi-objective optimization for asphalt pavement maintenance plans at project level: Integrating performance, cost and environment

Deep reinforcement learning for long‐term pavement maintenance planning

Laboratory Mixed-Mode Cracking of Asphalt Concrete Using the Single-Edge Notch Beam

Effect of the contact structure characteristics on rutting performance in asphalt mixtures using 2D imaging analysis