Life cycle assessment and multi-index performance evaluation of semi-flexible pavement after composite modification by using fly ash, rubber particles, warm mixing asphalt and recycled asphalt pavement

Zhao, Weitian; Yang, Qun

doi:10.1016/j.conbuildmat.2022.129945

Cited by 15 publications

(2 citation statements)

References 50 publications

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“…It occurs when asphalt pavement is subjected to water or freeze-thaw cycles. Due to the dynamic load of vehicles, the moisture entering the pavement gaps generates dynamic water pressure or vacuum negative pressure suction [49]. At the interface of the aggregate, the adhesion of the asphalt is reduced, and the bonding force is gradually lost [29].…”

Section: Immersed Marshall Stability Testmentioning

confidence: 99%

Viscoelastic Characteristics and Mechanical Performances of Asphalt Mastic and Mixtures with Fly Ash from Municipal Solid Waste Incineration Residues

Xu,

Du,

Bruno

et al. 2024

Buildings

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The extraction and utilization of non-renewable mineral resources impose significant transportation and economic challenges in infrastructure construction. At the same time, recycling fly ash derived from the bottom ash in municipal solid waste incineration residues (MSWIRs) presents a waste management hurdle. This study investigates the viscoelastic characteristics and mechanical performances at different scales of asphalt mastic and mixture with fly ash from MSWIRs. Firstly, Fourier transform infrared spectrometry (FTIR) was adopted to distinguish the physically blended states of asphalt and fillers. Then, a frequency test using a dynamic shear rheometer (DSR) was conducted to construct viscoelastic master curves, focusing on asphalt mastic. A dynamic modulus test characterized the viscoelastic behavior at the asphalt mixture scale. Furthermore, the mechanical performances of asphalt mixtures were evaluated, including the resilient modulus through indirect tension tests, moisture susceptibility via the immersed Marshall stability test, and anti-cracking properties with a low-temperature bending test. The FA incorporation in the mixture decreased the immersion residual stability by 7.40%, and increased the flexural tensile strength by 5.03% and the stiffness modulus by 78.67%. The mechanical evaluation of the mixture with FA could meet the application requirements of the asphalt layer. Finally, statistical analyses were conducted to present strong correlations (coefficient R2 over 0.70) among the mechanical results. Fly ash in asphalt mixtures revealed potential as a sustainable approach for waste reuse in road construction. Additionally, substituting mineral fillers at the mastic scale significantly influences the viscoelastic characteristics and mechanical performances of asphalt materials at the mixture scale.

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Section: Immersed Marshall Stability Testmentioning

confidence: 99%

Viscoelastic Characteristics and Mechanical Performances of Asphalt Mastic and Mixtures with Fly Ash from Municipal Solid Waste Incineration Residues

Xu,

Du,

Bruno

et al. 2024

Buildings

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show abstract

“…By conducting a life cycle assessment (LCA), it becomes possible to systematically evaluate the environmental impact of asphalt mixtures that utilize SW throughout their entire life cycle, from manufacturing to disposal, and to identify areas for improvement in the design of eco-friendly asphalt pavements [46,47]. A wealth of literature has explored the environmental impact of asphalt pavements, focusing on the different phases of the life cycle, including the extraction of raw materials (RME), production of asphalt mixtures (APC), maintenance-rehabilitation (M&R), recycling, and end-of-life (EOL) [48][49][50]. To estimate the environmental performance of asphalt mixtures, multiple factors must be considered, such as carbon footprint [51], resource and energy consumption [52], and other environmental benefits [53][54][55].…”

Section: Introductionmentioning

confidence: 99%

Recycling the electric arc furnace waste after geopolymerization in bitumen: experimental analyses and LCA study

Katanalp,

Tastan,

Ahmedzade

2024

Mater Struct

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The conversion of solid waste materials into cleaner products for road paving. applications appears to be a promising and sustainable option. However, there is still a lack of attention given to quantifying the potential environmental benefits of recycling solid wastes in asphalt pavements, regarding the impact on asphalt performance. To address this gap, the present study investigates the effects of recycling electric arc waste based geopolymers on asphalt binder and mixture characteristics, as well as environmental outputs. For this purpose, geopolymers were incorporated into both neat and SBS-modified binders. A comprehensive rheological investigation was conducted using cutting-edge multiple stress creep recovery (MSCR) and linear amplitude sweep (LAS) analyses. Stability, Marshall quotient, and flow values, as well as dry and wetconditioned tensile strength were considered, to determine asphalt mixture properties. In the Life Cycle Assessment (LCA), greenhouse gases resulting from fuel and energy consumption in each inventory phase were determined. The varying service lifetimes, maintenance and rehabilitation plans, and production and construction requirements of the different asphalt schemes were taken into account. Subsequently, the environmental impacts of the asphalt mixtures, including global warming potential, acidification, eutrophication, and smog formation potential, along with the total energy demand, were calculated across different stages of the LCA. The results show that the geopolymerization process results in important contributions in terms of both environmental savings and pavement performance.

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Hydroxyapatite‐spent cathode carbon block modified asphalt and molecular dynamics simulation study

Li,

Ren,

Wang

et al. 2024

J of Applied Polymer Sci

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The highly toxic substances contained in spent cathode carbon blocks (SCCB) pose a serious threat to human health and the ecological environment, and are difficult to recycle. To address this issue, we utilize H2O2 to oxidize cyanides and grow hydroxyapatite (HAP) on spent cathode carbon blocks to adsorb fluoride ions, achieving controlled removal of cyanides and fluorides. Subsequently, the hydroxyapatite‐spent cathode carbon block composite material (H‐SCCB) is applied to modified asphalt, and simulations of the interaction between hydroxyapatite interfaces and asphalt components are conducted. The results indicate that the total cyanide and fluoride ion concentrations in the experimental wastewater meet the discharge standards for industrial wastewater in China. Hydroxyapatite successfully grows on SCCB, presenting a rich porous structure and significantly increased surface area. Mechanical testing shows that 4% H‐SCCB exhibits optimal performance, with a 23.28% increase in complex modulus (G*) compared to the matrix asphalt. Creep recovery capability (R) increases by 54.32% and 7%, respectively. Additionally, molecular dynamics simulations reveal that the interface adsorption between hydroxyapatite and asphalt binder is primarily influenced by electrostatic forces. Under the influence of hydroxyapatite, the diffusion abilities of asphalt four components are as follows: resin > aromatic > saturate > asphaltene.

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Life cycle assessment and multi-index performance evaluation of semi-flexible pavement after composite modification by using fly ash, rubber particles, warm mixing asphalt and recycled asphalt pavement

Cited by 15 publications

References 50 publications

Viscoelastic Characteristics and Mechanical Performances of Asphalt Mastic and Mixtures with Fly Ash from Municipal Solid Waste Incineration Residues

Viscoelastic Characteristics and Mechanical Performances of Asphalt Mastic and Mixtures with Fly Ash from Municipal Solid Waste Incineration Residues

Recycling the electric arc furnace waste after geopolymerization in bitumen: experimental analyses and LCA study

Hydroxyapatite‐spent cathode carbon block modified asphalt and molecular dynamics simulation study

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