Mechanical performance of sustainable asphalt mixtures manufactured with copper slag and high percentages of reclaimed asphalt pavement

Muñoz-Cáceres, Osvaldo; Raposeiras, A.C.; Movilla-Quesada, D.; Castro‐Fresno, Daniel; Lagos-Varas, Manuel; Andrés‐Valeri, Valerio C.; Valdés-Vidal, Gonzalo

doi:10.1016/j.conbuildmat.2021.124653

Cited by 17 publications

(10 citation statements)

References 58 publications

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“…When the mass ratio of rejuvenator to virgin bitumen is the same, the rejuvenated bitumen with the RJ exhibits a more considerable penetration value than rejuvenator RX. It is attributed to the softer characteristic of pure rejuvenator RJ, which is consistent with the viscosity result [ 13 ]. To restate the penetration-grade of aged bitumen to the virgin bitumen level (6.7 mm), the optimum dosages of compound RJ-based rejuvenators are 24 wt%, 27 wt%, 36 wt%, 43 wt%, 54 wt%, and 68 wt%, respectively.…”

Section: Resultssupporting

confidence: 84%

“…Herein, the structural stability of recycled asphalt is better than the fresh one, which agrees well with the rutting evaluation results. As expected, the Marshall stability of the wet asphalt mixture is smaller than the dry sample, which is attributed to the adhesive performance loss because of moisture erosion [ 13 ]. However, the residue Marshall stability ratio of control and recycled asphalt mixture is higher than the standard requirement of 75%.…”

Section: Resultsmentioning

confidence: 69%

“…It was reported that incorporating RAP materials into asphalt mixtures could reduce the consumption of binder and aggregate and improve the dynamic modulus and rutting resistance [ 7 , 8 , 9 ]. Nevertheless, the aged bitumen in RAP materials strongly increases the risks of low-temperature and fatigue cracking [ 10 , 11 , 12 , 13 ]. Furthermore, the aging reactions of bitumen led to the mutual transformation and proportion imbalance between different chemical components.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture

Ren

Liu

et al. 2022

Materials

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This study aims to comprehensively investigate the rejuvenation efficiency of various self-developed compound rejuvenators on the physical, mechanical, and aging properties of aged bitumen, asphalt mortar, and mixture. The results revealed that the restoration capacity of vacuum distilled-oil rejuvenators on high-and-low temperature performance-grade of aged bitumen is more significant. In contrast, an aromatic-oil based rejuvenator is good at enhancing low-temperature grade and aging resistance. Moreover, the temperature and time of the curing conditions for mixing recycling of asphalt mixture were optimized as 150 °C and 120 min. Furthermore, the sufficient anti-rutting, structural stability, and moisture resistance of recycled asphalt mixture affirmed the rejuvenation efficiency of compound rejuvenators.

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Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture

Ren

Liu

et al. 2022

Materials

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“…First, the decreased grindability of blended cement owing to the lower grindability of the MGCS consumes more electricity during grinding and milling. Second, fewer used clinkers due to MGCS addition leads to a lower quantity of raw coal depletion for calcination [ 46 ]. Considering these two aspects, the energy consumption of blended cement production can be reduced by 16% in comparison to OPC production.…”

Section: Resultsmentioning

confidence: 99%

Environmental Benefit Assessment of Blended Cement with Modified Granulated Copper Slag

Zhang

Wang

2022

Materials

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This study aimed to investigate the environmental impact of modified granulated copper slag (MGCS) utilization in blended cement production at a representative cement plant in China. Sensitivity analysis was performed on the substance inputs, and the life cycle impact assessment (LCIA) model was applied. A detailed comparative analysis was conducted of the environmental impact of cement production in other studies, and ordinary Portland cement production at the same cement plant. Results showed that calcination has the largest contribution impact of all the impact categories, especially in causing global warming (93.67%), which was the most prominent impact category. The life cycle assessment (LCA) result of blended cement was sensitive to the chosen LCIA model and the depletion of limestone and energy. In this study, producing blended cement with MGCS effectively mitigated the environmental impact for all the selected impact categories. Results also show a reduction in abiotic depletion (46.50%) and a slight growth (6.52%) in human toxicity. The adoption of MGCS in blended cement would therefore generally decrease the comprehensive environmental impact of cement, which contributes to the development of sustainable building materials.

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“…In addition, copper slag is also proposed to utilize in widely used asphalt mixtures pavements for sustainable road infrastructure. Cáceres et al 24 . developed hot mix asphalt pavements with copper slag replacing partial aggregate.…”

Section: Introductionmentioning

confidence: 99%

Utilization of copper slag in the fabrication of silica refractory: Characteristics and performance evaluation

Lv,

Gu,

Zhang

et al. 2023

Int J Applied Ceramic Tech

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It is urgently necessary for environmental resource utilization of copper slag with incremental quantities of stacked copper slag. In this paper, copper slag has been used as mineralizer and raw material to prepare silica refractory. The effect of copper slag on phase composition, microstructure, mechanical and load deformation performance has been investigated. The results indicate that the components of copper slag as mineralizer promote the formation of tridymite. Simultaneously, copper slag promotes the densification of silica refractory and glass phase increases due to the mineralizer and impurities in copper slag. The increased glass phase promotes the cold crushing strength and cold modulus of rupture for silica refractory. While the hot modulus of rupture slightly decreases by 1.5 MPa with 6 wt% copper slag. The load softening temperature and high‐temperature creep attains 1632.6°C and ‐5.5%, respectively. It is estimated that the potential application of silica refractory with copper slag on upper part of copper stove (low‐temperature and low‐load region) is acceptable in consideration of environmental utilization of solid waste.This article is protected by copyright. All rights reserved

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Mechanical performance of sustainable asphalt mixtures manufactured with copper slag and high percentages of reclaimed asphalt pavement

Cited by 17 publications

References 58 publications

A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture

A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture

Environmental Benefit Assessment of Blended Cement with Modified Granulated Copper Slag

Utilization of copper slag in the fabrication of silica refractory: Characteristics and performance evaluation

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