Environmental optimization of warm mix asphalt (WMA) design with recycled concrete aggregates (RCA) inclusion through artificial intelligence (AI) techniques

Polo-Mendoza, Rodrigo; Martínez-Arguelles, Gilberto; Peñabaena‐Niebles, Rita

doi:10.1016/j.rineng.2023.100984

Cited by 30 publications

(11 citation statements)

References 82 publications

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“…In addition to its application in pavement layers, RCA has been proposed for asphaltpavement applications [77,[170][171][172][173]. The following section describes the latest research progress on the application of RCA in asphalt pavements.…”

Section: The Use Of Rca For Sustainable Asphalt Pavementsmentioning

confidence: 99%

“…Therefore, the use of a higher percentage of RCA (e.g., ≥75%) may not be suitable for the manufacturing of asphalt mixtures with outstanding water stability [174][175][176]. Some approaches have been proposed to apply RCA effectively, such as the coating of RCA with different cementitious pastes or polymer solutions [173][174][175][176]. For example, the coating of RCA with a cementitious slurry can improve the water stability of asphalt concrete by approximately 7% [177].…”

Section: The Use Of Rca For Sustainable Asphalt Pavementsmentioning

confidence: 99%

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Performance Improvement of Recycled Concrete Aggregates and Their Potential Applications in Infrastructure: A Review

Han

Zhao²,

et al. 2023

Buildings

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In the construction industry, natural aggregates (NA) can be replaced by recycled concrete aggregates (RCA), which can address the issue of construction-waste disposal and resolve the dilemma between demand and supply. This paper aims to systematically review the modification of RCA techniques and their application in producing recycled aggregate concrete (RAC). First, the pretreatment approaches for enhancing the properties of RCA are introduced. Next, the improved efficiency of these approaches and their influences on the workability, mechanical strengths, and permeability of RAC are analyzed and discussed. Subsequently, the effectiveness of different techniques and their cost/environmental impact are compared. Finally, some case studies of the application of RCA in infrastructure are presented, and the remaining challenges and perspectives are discussed. The results of this review work can extend the knowledge of RCA and RAC, as well as serving as a source of inspiration for further studies.

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Section: The Use Of Rca For Sustainable Asphalt Pavementsmentioning

confidence: 99%

Section: The Use Of Rca For Sustainable Asphalt Pavementsmentioning

confidence: 99%

Performance Improvement of Recycled Concrete Aggregates and Their Potential Applications in Infrastructure: A Review

Han

Zhao²,

et al. 2023

Buildings

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“…The literature on environmentally sustainable construction practices is rich with strategies for enhancing concrete properties [27]. One notable approach is employing hemp fiber rope (HFR) as a reinforcement in recycled brick aggregate concrete (RAC-FCSB), which has been shown to improve the compressive stress-strain behavior substantially [28]. Research identifies two effective HFR reinforcement techniques: strip reinforcement and complete wrapping.…”

Section: Introductionmentioning

confidence: 99%

Evaluating Recycled Concrete Aggregate and Sand for Sustainable Construction Performance and Environmental Benefits

Singh,

Mahgoub

et al. 2024

CivilEng

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This research investigates the potential of utilizing recycled concrete aggregate (RCA) and recycled sand (RS), derived from crushed concrete cubes, as sustainable alternatives in construction materials. The study comprehensively evaluates the properties of RCA and RS, focusing on workability, impact resistance, abrasion resistance, and compressive strength to determine their viability as substitute construction materials. A notable finding is RS’s enhanced fire and heat resistance when used as a fine aggregate in mortar blends, mixed with cement and Sinicon PP in a 3:1 ratio. The experimental analysis included thorough assessments of uniformity, durability, and curing time, alongside Scanning Electron Microscopy (SEM) for structural examination. Results show that RCA has an Aggregate Impact Value (AIV) of 5.76% and a Los Angeles Abrasion Value (LAA) of 21.78%, demonstrating excellent strength of the recycled aggregates. The mortar mix was also prepared using recycled sand, cement, and Sinicon PP, and its stability was confirmed through soundness tests, which resulted in a 0.53 mm expansion and a satisfactory consistency level of 44%. Ultrasonic pulse velocity (UPV) tests also indicated high-quality concrete formation using RCA and RS. SEM imaging corroborated this by revealing a bond between the cement paste and the aggregates. Incorporating RS and RCA in concrete mixtures impressively yielded a compressive strength of 26.22 N/mm2 in M20-grade concrete. The study concludes that using RCA and RS waste materials in the construction sector underlines that sustainable practices can be integrated without compromising material quality. This approach aligns with sustainable development goals and fosters a more environmentally friendly construction industry.

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“…It is critical to achieve net-zero emissions to limit global warming and prevent further environmental damage [2,3]. In recent years, both academia and industry have recognized the value of a holistic approach to sustainability management, which includes considering environmental, economic, and social factors [4]. Thus, sustainability criteria are required in the context of road construction and used to support national growth and development, since they offer access to occupation, communal, health, and education facilities [5].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Overview of the Utilization of Recycled Waste Materials and Technologies in Asphalt Pavements: Towards Environmental and Sustainable Low-Carbon Roads

Yaro,

Sutanto,

Baloo

et al. 2023

Processes

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Given the prevailing concerns about greenhouse gas emissions, global warming, and the growing demand for renewable resources, the pavement industry, among others, is actively engaged in researching and exploring low-carbon materials and technologies. Despite the growing interest in low-carbon asphalt pavement, there is still a significant knowledge gap regarding the use of various waste materials and technologies to achieve this goal. This study aims to close this gap by conducting a systematic review and scientometric assessment of the existing studies on the use of waste materials and technologies for low-carbon asphalt pavement. The study spans the years 2008 to 2023, and the scientometric analysis was conducted using the VOS viewer application. The study identifies materials and technologies in this area by examining co-authored country studies, publication sources, and keyword co-occurrence. It should be noted that a limited number of waste materials that allow CO2 emissions reduction was analyzed in this study. However, other waste categories, such as bio-oils and polymers, which can provide positive either environmental or economic impacts on the production of paving materials, were not considered in the scope of the study. Based on the current review, it was found that integrating recycled waste materials like recycled asphalt pavement, biochar, or crumb rubber with alternative mixing technologies such as warm mix asphalt and cleaner energy can significantly reduce CO2 emissions. China and the United States were identified as key research contributors to the low-carbon pavement. Furthermore, biomass-based fuel and electric construction equipment lower carbon and greenhouse gas emissions by 36–90% and 67–95%, respectively. However, before various recycled waste materials and technologies can be widely used in the asphalt industry, various challenges need to be addressed, including cost concerns, performance and durability concerns, standardization and regulations, availability, integration with existing facilities, and insufficient field and long-term data. The review identified critical research gaps, such as the absence of a homogeneous and reliable standard method for low-carbon asphalt pavement, limited field performance data, and a life cycle assessment approach in analyzing the emission reduction effects. The reviews will aid in the paradigm shift to a more carbon-friendly pavement industry that uses recycled waste materials and technologies.

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Environmental optimization of warm mix asphalt (WMA) design with recycled concrete aggregates (RCA) inclusion through artificial intelligence (AI) techniques

Cited by 30 publications

References 82 publications

Performance Improvement of Recycled Concrete Aggregates and Their Potential Applications in Infrastructure: A Review

Performance Improvement of Recycled Concrete Aggregates and Their Potential Applications in Infrastructure: A Review

Evaluating Recycled Concrete Aggregate and Sand for Sustainable Construction Performance and Environmental Benefits

A Comprehensive Overview of the Utilization of Recycled Waste Materials and Technologies in Asphalt Pavements: Towards Environmental and Sustainable Low-Carbon Roads

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