Integrated Approach to Using Technology of Reclaimed Asphalt Pavement (RAP)

Lyubarskaya, Maria; Merkusheva, V.S.; Osian, P.A.; Ilin, Aleksey; Свинцов, Е С

doi:10.1016/j.proeng.2017.05.134

Cited by 11 publications

(3 citation statements)

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“…Several studies have shown that the production of HMA with RAP brings significant energy, financial, and environmental benefits. For example, it results in decreased production costs for new HMA, preserves natural resources by reducing the need for asphalt binder and mineral aggregate, reduces CO 2 and greenhouse gas emissions, and decreases the amount of construction debris placed in landfills [5][6][7][8][9][10]. Finally, reclaimed asphalt pavement reduces energy and fossil fuel consumption, making the pavement industry more sustainable [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of Compaction Energy on the Mechanical Performance of Hot Mix Asphalt with a Reclaimed Asphalt Pavement (RAP) and Rejuvenating Additive

Limón-Covarrubias,

Ochoa-Ambriz,

Avalos-Cueva

et al. 2023

Infrastructures

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The Mexican asphalt paving industry is increasingly interested in using reclaimed asphalt pavement (RAP) to produce hot mix asphalt (HMA) due to its economic and environmental advantages. However, an ill-defined methodology for integrating RAP into the HMA mix design has hindered its use. This paper investigates how compaction energy affects both rejuvenated and non-rejuvenated recycled HMA mixtures. A Superpave gyratory compactor was used to determine the optimal binder content and find a balance between flexibility and stiffness that meets cracking and rutting resistance requirements. Various recycled HMA mixtures were subjected to different compaction energy levels (75, 100, and 125 gyros), different RAP contents (15%, 30%, and 45%), and various dosages (10%, 15%, and 36%) of the rejuvenating additive Maro-1000®, following the blending chart. Performance was evaluated using the Hamburg wheel tracking test (HWTT) and the fracture energy flexibility index test (I-FIT). The results demonstrate that mixtures with RAP, a rejuvenating admixture, and varying compaction energies exhibit favorable mechanical behavior. However, both rejuvenated and non-rejuvenated mixes with 15% RAP showed performance comparable to conventional mixtures. They improved stiffness by up to 46% while reducing the flexibility index to 25%, striking a balanced equilibrium between rutting resistance and cracking susceptibility.

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Section: Introductionmentioning

confidence: 99%

Influence of Compaction Energy on the Mechanical Performance of Hot Mix Asphalt with a Reclaimed Asphalt Pavement (RAP) and Rejuvenating Additive

Limón-Covarrubias,

Ochoa-Ambriz,

Avalos-Cueva

et al. 2023

Infrastructures

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“…One of these technologies i.e., cold emulsified-bitumen mixtures (CEBM) can be used either in the construction of the base course or surface and binder-course (Mohammad and Nazzal, 2017). The base/surface courses with CEBM can facilitate to minimize the utilization of natural aggregates by replacing with recycled aggregates (Lyubarskaya et al, 2017;Flores et al, 2020). Further, the production of cold mix asphalt doesn't involve in heating of the aggregates which leads to reduction in energy consumption, temperature, and emissions of greenhouse gases (Zapata and Gambatese, 2005;Swaroopa et al, 2015;Ma et al, 2016;Chehovits and Galehouse 2010;Peng et al, 2015;Thives and Ghisi, 2017).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of cold emulsified bitumen mixes using recycled con-crete aggregates as a base course

Chakravarthi,

Kumar Galipelli,

Sabavath

2023

rdlc

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The utilization of cold bituminous mixes in road construction is an environmentally and economically viable alternative to other stabilization processes. Besides, the incorporation of recycled materials into the cold mixes increases sustainability and decreases waste generation. The stabilization of Recycled Concrete Aggregates (RCA) with cement for pavement bases is a known one. However, the stabilization of RCA using bitumen emulsion is limited in nature. The present study evaluated the mechanical properties of the cold mixes prepared using RCA in different proportions (25%, 50%) with varying bitumen emulsion contents (5, 6, 7%). The compacted and cured samples are investigated for mechanical characteristics like density, Marshall Stability, Indirect Tensile Strength (ITS), Resilient Modulus, and permanent deformation. The dynamics of moisture evaporation and durability in terms of tensile strength ratios are studied. In the end, the vertical compressive and horizontal tensile strains of the pavement sections with bitumen emulsion stabilized bases are analyzed using IITPAVE software. The obtained results are compared using the critical strains calculated from the performance equations given by IRC (2018). It is noted that there is a decrease in the overall thickness of the pavement for the design traffic that varies from 5msa to 50msa. From this study, the base courses are recommended with bitumen emulsion treated RCA mixes, for traffic levels, up to 20 msa which would result in both -reductions in cost as well as the reduction in pavement overall-thickness. The present study also concluded that the optimum emulsion content of 6% does not show better resistance to permanent deformation. From the results, it is also suggested multi-variant mix-design criteria rather than a single indicative parameter.

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“…Due to these limitations, it is bitumen modifiers such as rejuvenators and antistripping additives to improve their rheological properties and provide a more balanced performance. Many of these commonly used modifiers are polymeric in nature and their incorporation in RAP mixtures are known to enhance their rheological properties (Lyubarskaya et al, 2017). The main objective of this study is to develop polymeric additives by adding waste plastic to the bituminous mix containing RAP and development of Bitumen replaced by Waste Plastic and natural aggregates replaced by Reclaimed asphalt pavement (RAP) for sustainable construction purpose.…”

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confidence: 99%

Experimental Study of Partial Replacement of Natural Aggregates and Bitumen With Reclaimed Asphalt Pavement and Waste Plastic in Flexible Pavement – A Review

Misal¹,

Datta²

2019

IJRTER

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Accordingly, existing road levels at approaches of these structures are required to be raised making the existing pavement materials redundant. Annually a huge amount of new roads are overlaid on existing road pavement in which a layer of existing bitumen pavement is removed for road development purposes. Utilization of such waste as Reclaimed Asphalt Pavement to replace natural aggregates partially could be helpful both for environmental and economic aspects in the construction industry. Also disposal of waste materials including waste plastic bags has become a serious problem and waste plastics are burnt for apparent disposal which cause environmental pollution. Utilization of waste plastic in bituminous mixes has proved that these enhance the properties of mix in addition to solving disposal problems in various studies. The seasonal change in temperature and loading nature has a significant effect on asphalt behavior because of its viscoelastic nature. Several types of flexible pavement failure/distress occur due to this behavior of asphalt binder, among which rutting and fatigue cracks are very common. The present study is to assess the suitability of using these redundant pavement materials also called Reclaimed Asphalt Pavement (RAP) as potential subbase / base course materials for flexible pavement and perform various laboratory experiments to analyze its strength and durability factors and compare the results with the conventional bituminous mix The purpose of this article is to review global experience with RAP, identify common issues of implementation of this technology and develop methods to ensure a comprehensive approach to the use of RAP.

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Integrated Approach to Using Technology of Reclaimed Asphalt Pavement (RAP)

Cited by 11 publications

References 0 publications

Influence of Compaction Energy on the Mechanical Performance of Hot Mix Asphalt with a Reclaimed Asphalt Pavement (RAP) and Rejuvenating Additive

Influence of Compaction Energy on the Mechanical Performance of Hot Mix Asphalt with a Reclaimed Asphalt Pavement (RAP) and Rejuvenating Additive

Evaluation of cold emulsified bitumen mixes using recycled con-crete aggregates as a base course

Experimental Study of Partial Replacement of Natural Aggregates and Bitumen With Reclaimed Asphalt Pavement and Waste Plastic in Flexible Pavement – A Review

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