Mechanical behavior and water infiltration of pervious concrete incorporating recycled asphalt pavement aggregate

Bittencourt, Susana Viana; Magalhães, Margareth da Silva; Tavares, Maria Elizabeth da Nóbrega

doi:10.1016/j.cscm.2020.e00473

Cited by 28 publications

(11 citation statements)

References 39 publications

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“…The RAA had a slightly elevated rate of 1.49%; the asphalt residue created interconnected voids in the outer layers that trapped additional water. Similar findings were observed by studying the water infiltration in RAA concretes (Bittencourt et al, 2021). The pore structure characteristics were studied in great detail, using mercury intrusion porosimetry techniques to explain the pore classification and capillaries in the RAA mortar (Abraham & Ransinchung, 2019b).…”

Section: Aggregate Characteristics and Sem Analysessupporting

confidence: 66%

Pyrolysis of Reclaimed Asphalt Aggregates in Mortar

Setiadji¹,

Wibowo²,

Jonkers³

et al. 2022

IJTech

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Asphalt pavement consists of aggregates resulting in a waste material at end of its life. The aggregates can be reused as basic material for asphalt or cementitious binding agents. In both scenarios, the recycled aggregates should provide a good bond with the binder to achieve strength. This study focuses on reusing recycled asphalt aggregates (RAA) in mortar. The major weakness of RAA is the thin oily film originating from the asphalt residue, weakening the bond with cement. The pyrolysis method is accessed in an attempt to overcome this weakness. Three scenarios were investigated; the use of virgin aggregates (VA), RAA, and pyrolysis recycled asphalt aggregate (PRAA) as constituent in mortar. All variables were set a constant except for the aggregate type, the VA mortar function as controlling element. This research is methodologically based on experimental data conducted in the laboratory, while aggregate samples were taken from the field. To analyze the influence of pyrolysis to the aggregate-to-cement bond behaviour, qualitative and quantitative data were collected. The quantitative data were the mechanical properties, the mortar tensile, and compression strength. The qualitative data were obtained from scanning electron microscope readings to visually observe the aggregate surface roughness and voids, including the aggregates cross-section and pre-existing micro-cracks in the aggregate-to-cement interface. Supporting data were the aggregates' abrasion rate and absorption. The RAA resulted in a significant mortar strength decrease. This conclusion was supported by the findings of pre-existing cracks in the interfacial transition zone. The pyrolysis method improved the compression strength but negligibly affected the tensile behavior. The compression and tensile strength increased as a function of time for both RAA and PRAA, and a strength convergence was reached at 28 days. The PRAA is considered an option for reuse in mortar, supporting nature conservation.

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Section: Aggregate Characteristics and Sem Analysessupporting

confidence: 66%

Pyrolysis of Reclaimed Asphalt Aggregates in Mortar

Setiadji¹,

Wibowo²,

Jonkers³

et al. 2022

IJTech

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“…These findings were further validated by 13 effect sizes for flexural strength, out of which six positive effect sizes were obtained. Conversely, PC became less durable with cement and aggregate replacement owing to the inferior properties of IWA and RA in comparison to NA [30,56,61,63,64,66]. To limit the reduction in performance, an RA replacement limited to 50% [10,35] or the addition of fibers was recommended [55].…”

Section: Combined Replacement Of Cement and Aggregates In Pervious Co...mentioning

confidence: 99%

Meta-Analysis of the Performance of Pervious Concrete with Cement and Aggregate Replacements

et al. 2022

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In recent years, pervious concrete (PC) has gained much attention as one of the strategies for low-impact development (LID) in pavements due to its structural, economic, and road-user benefits. This study sought to review and evaluate changes in the mechanical, hydraulic, and durability performance of PC produced with cement and aggregate replacements. A meta-analysis was conducted to elucidate the feasible range of the replacement percentage and the number of materials that could be used to replace cement and aggregates; single or binary replacements were considered. Results indicated that cement-replacing materials, industrial wastes (IWA), and recycled aggregates (RA) met the minimum requirement for the mechanical, hydraulic, and durability properties of PC. The use of a single cement replacement material provided PC with better performance than when cement was replaced with two or more materials or when cement alone was used. Industrial waste was found to be a better replacement to aggregates than RA. The combined replacement of cement and aggregates with IWA and other cement-replacing materials was the most effective method for improving the mechanical, hydraulic, and durability performance of PC. Replacements of up to 40% was considered viable for cement replacement, while up to 50% replacement was considered practical for aggregate and combined replacement. PC incorporating different cement-replacing materials exhibited equivalent or improved mechanical properties and maintained hydraulic performance compared to cement-based PC. Nonetheless, limited studies are available on the durability performance of PC made with cement and/or replacements. Thus, the durability of PC coupled with the applicability of replacement materials acquired from different locations need to be evaluated to address the viability of producing more durable PC with the use of replacements.

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“…According to Hendrickx (7), pervious concrete also reduces road noise. The pervious material structure allows easy escape for air trapped between tire and pavement, causing lower frequency road noise.…”

Section: Introductionmentioning

confidence: 99%

Mix design and physical and mechanical properties of pervious concretes

et al. 2022

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Fast-growing climate changes are known to have diverse impacts worldwide, even in large cities. Pervious concrete can be a successful safety solution for increasingly frequent heavy rains and floods. This study focuses on achieving an optimized pervious concrete within the scope of international standards by analyzing concretes made with different W/C ratios and vibration times. The results of the study show the strong influence of parameters such as porosity, permeability, and mechanical strengths. Concrete with 0.35 W/C ratio and 40 seconds vibration time was selected for its adequate physical and mechanical properties.

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Mechanical behavior and water infiltration of pervious concrete incorporating recycled asphalt pavement aggregate

Cited by 28 publications

References 39 publications

Pyrolysis of Reclaimed Asphalt Aggregates in Mortar

Pyrolysis of Reclaimed Asphalt Aggregates in Mortar

Meta-Analysis of the Performance of Pervious Concrete with Cement and Aggregate Replacements

Mix design and physical and mechanical properties of pervious concretes

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