Analysis of the use of cupola furnace slags, green sand and reclaimed asphalt pavement in asphalt concrete mixtures for low intensity traffic

Vega-Zamanillo, Ángel; Calzada-Pérez, Miguel Ángel; Lastra-González, Pedro; Indacoechea-Vega, Irune; Fernández-Ortega, José Ángel

doi:10.7764/rdlc.16.2.229

Cited by 12 publications

(4 citation statements)

References 12 publications

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“…Although the only natural aggregate is limestone, this greatly hinders the performance of these mixtures. Laboratory results show that they can be successfully used in the construction of low-traffic intensity roads as bonding layers [4].…”

Section: Related Workmentioning

confidence: 99%

Viscoelastic-Thermodynamic Model and Crack Propagation in Asphalt Concrete Pavement

Yuan

Zhao

2022

Security and Communication Networks

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Asphalt concrete pavement has a wide range of applications in the construction of high-grade highways. Asphalt concrete pavement has elastic properties, and its viscoelasticity and viscoplasticity are obviously affected by temperature. To determine whether a structure can continue to be used safely, it is most important to determine whether microscopic or macroscopic cracks present in the structure continue to propagate and cause structural failure. The purpose of this study was to study the effects of different ambient temperatures and mobile vehicles on the stress around the crack tip and the propagation path of different types of asphalt pavements. Based on the theory of fracture mechanics and viscoelasticity, this work studies the problem of crack propagation from a macroscopic perspective. It proposes to use the finite element method to analyze the crack problem in the pavement structure. With the help of ABAQUS software, a curved beam model with cracks was established for calculation, and moving loads and ambient temperature fields were added for analysis. The experimental results in this study show that with the decrease in the ambient temperature, the stress at the crack tip increases continuously. As the analysis time increases, the stress also increases. When the crack is smaller, the stress value at the tip is larger. When a = 15 mm, the stress value at the crack tip is the largest. However, when a = 20 mm and a = 25 mm, the stress at the crack tip is significantly reduced. It shows that the crack is easier to crack when the crack value is smaller. After the crack has grown to a certain length, the growth rate will slow down.

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Section: Related Workmentioning

confidence: 99%

Viscoelastic-Thermodynamic Model and Crack Propagation in Asphalt Concrete Pavement

Yuan

Zhao

2022

Security and Communication Networks

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“…The objective of these type of aims is to decrease the amount of excess material in landfills and to lower the total cost of engineering products (Herráiz, Herráiz, Domingo, & Domingo, 2016). Vega-Zamanillo, Calzada-Pérez, Lastra-González, Indacoechea-Vega, & Fernández Ortega (2017) investigated the use of cupola furnace slags, green sand and reclaimed asphalt pavement in low traffic intensity roads. Using Marshall Method, the mix design and voids percentage of the mixtures were determined.…”

Section: Introductionmentioning

confidence: 99%

Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures

Aslan

Aktaş

2019

rdlc

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Stone Mastic Asphalt (SMA) mixtures are susceptible to drain down since they contain more bitumen comparing to Hot Mix Asphalt (HMA) mixtures. To prevent this problem, stabilizers are used in SMA mixtures. Stabilizers are costly materials and needed to be manufactured with several processes. In this study, pumice and diatomite materials were evaluated to see whether they could be used in SMA mixtures as stabilizers. The optimum bitumen contents of the mixtures having different amounts of pumice (1, 1.5 and 2%) and diatomite (0.25, 0.50, 0.75 and 1.00%) were determined in accordance with Marshall design method. Then, the drain down characteristics of SMA mixtures at optimum bitumen content were found. Finally, the resistance of the mixtures to moisture-induced damage is analyzed by conducting the Tensile Strength Ratio (TSR) test. The results indicate that there is a high potential of using certain amounts of pumice and diatomite in SMA mixtures as stabilizers.

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“…RAP usually has lower road performance due to the aging of bitumen [ 4 , 5 , 6 ]. A rejuvenator that can reconstitute the chemical component and colloidal structure of aged bitumen to regenerate its performance [ 7 , 8 ] is crucial for the recycling of RAP.…”

Section: Introductionmentioning

confidence: 99%

Diffusibility Enhancement of Rejuvenator by Epoxidized Soybean Oil and Its Influence on the Performance of Recycled Hot Mix Asphalt Mixtures

et al. 2018

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Epoxidized soybean oil (ESO) was employed as a novel penetrant cooperating with a conventional rejuvenator (CR) for the recycling of reclaimed asphalt pavement (RAP). The influence of ESO on the diffusibility and the regenerating effects of CR on RAP were investigated. The diffusibility testing result shows that the diffusibility of CR is enhanced by the addition of ESO because the epoxy group in ESO can facilitate asphaltene dispersion due to its high polarity, which simultaneously reduces the viscosity and improves the fluidity of aged bitumen so as to allow diffusion of the rejuvenator into the aged bitumen. Road performance testing of a recycled hot mix asphalt mixture (RHMA) indicates that the fatigue and cracking resistance properties as well as the water stability of RHMA containing CR can be improved by the addition of ESO due to the diffusibility enhancement of CR, which boosts the regenerating effect of CR on aged bitumen in RAP. The fatigue and cracking resistance properties as well as the water stability of the recycled hot mix asphalt mixture containing CR with 7 wt % ESO approximate those of the hot mix asphalt mixture composed of the same virgin aggregates and bitumen. Taking into account the rutting resistance decline versus the addition of ESO, the content of ESO should not exceed 7 wt % of the conventional rejuvenator.

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Analysis of the use of cupola furnace slags, green sand and reclaimed asphalt pavement in asphalt concrete mixtures for low intensity traffic

Cited by 12 publications

References 12 publications

Viscoelastic-Thermodynamic Model and Crack Propagation in Asphalt Concrete Pavement

Viscoelastic-Thermodynamic Model and Crack Propagation in Asphalt Concrete Pavement

Use of diatomite and pumice as stabilizers in stone mastic asphalt mixtures

Diffusibility Enhancement of Rejuvenator by Epoxidized Soybean Oil and Its Influence on the Performance of Recycled Hot Mix Asphalt Mixtures

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