Utilisation of Recycled Concrete Aggregates for Sustainable Porous Asphalt Pavements

A systematic review is carried out to determine the influence of recycled aggregate on the properties of concrete designed for pedestrian pavers, selecting highly relevant investigations, filtering them by years, focus and results. Which contribute to make a comparison of results in the properties of resistance to compression and percentage of absorption of pavers subjected to different percentages of replacement of recycled aggregate in its structure, in order to determine the influence, they have on said properties. Through the analysis and synthesis of results, the influence of the recycled aggregate is validated, affecting the decrease in its resistance to compression and the increase in the percentage of absorption. However, taking into account the information presented and based on the statistics, it is valid to conclude that by replacing up to 25% of the coarse aggregate with recycled aggregate, an adequate mixture can be achieved, complying with the parameters estimated by NTP. 399,611 according to their properties. Likewise, it is valid to mention that, at a higher percentage of replacement, the properties vary unfavorably

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“…[8] refer to coarse aggregate mix. However, both mention the increase of air voids and reduction of permeability as well as the article of [12].…”

Section: Discussionmentioning

confidence: 99%

Influence of recycled aggregate on the compressive strength and absorption percentage of Lima 2020 pedestrian pavers

Aguilar-Cipriano¹,

Neyra-Torres²,

Campos-Vasquez³

2022

Proceedings of the 20th LACCEI International Multi-Conference for Engineering, Education and Technology: “Education, Research A

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“…The field performance of on-site pavement testing sections built with recycled base layers was evaluated [7]. Up to 100% of granite was substituted with recycled concrete aggregates (RCA) to produce sustainable porous pavements [8]. However, some approaches were more direct and included the re-use of quarry dust and/or its by-products into different types of pavements.…”

Section: Introductionmentioning

confidence: 99%

Thermally Treated Waste Silt as Geopolymer Grouting Material and Filler for Semiflexible Pavements

2022

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Considering the future shortage of natural aggregates, various researchers have promoted the recycling of by-products into various asphalt pavement types. This paper promoted a double-recycling technique, where thermally treated waste silt was used as a filler for the bituminous skeleton and grouting material of a geopolymer-based semiflexible pavement. Semiflexible pavements (SFP) inherit the flexibility of common asphalt pavements and simultaneously benefit from the rigidity of cement concrete pavements. For this purpose, waste silt obtained from a local asphalt plant was thermally treated at 750 °C and was used as the filler to produce the porous skeleton. Two different materials, including conventional cement-based and a geopolymer-based cement, were used as the grouting material. The geopolymer grout was produced by mixing metakaolin (MK), potassium-based liquid hardener and calcined silt as filler. The porous and grouted samples were characterized in terms of indirect tensile strength (ITS), the indirect tensile strength modulus (ITSM) and moisture sensitivity. The use of thermally treated waste silt as filler in porous asphalt demonstrated promising results and was comparable to the control samples produced with limestone as the filler. However, the control samples grouted with cement-based material outperformed the geopolymer grout in all aspects. Moreover, the addition of calcined silt improved the low-temperature fatigue performance of porous and grouted asphalt pavements.

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Alternative Building Materials for a Sustainable Built Environment: A Literature Review

Rivera-Lutap,

Dela Cruz,

Jacinto

et al. 2024

Environmental Science and Engineering

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Utilisation of Recycled Concrete Aggregates for Sustainable Porous Asphalt Pavements

Cited by 5 publications

References 37 publications

Influence of recycled aggregate on the compressive strength and absorption percentage of Lima 2020 pedestrian pavers

Influence of recycled aggregate on the compressive strength and absorption percentage of Lima 2020 pedestrian pavers

Thermally Treated Waste Silt as Geopolymer Grouting Material and Filler for Semiflexible Pavements

Alternative Building Materials for a Sustainable Built Environment: A Literature Review

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