A review of eco-friendly functional road materials

Jian, Wei; Huang, Yue; Sha, Aimin

doi:10.1016/j.conbuildmat.2018.10.082

Cited by 49 publications

(16 citation statements)

References 93 publications

(117 reference statements)

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“…It is now confirmed that porous asphalt mixture has good performance in permeability, antisliding, and noise reduction [1][2][3][4]. erefore, adding asphalt rubber with good viscoelastic property into the porous asphalt mixture can not only improve the noise reduction effect but also dispose the waste tire, which would contribute to environment protection [5,6].…”

Section: Introductionmentioning

confidence: 88%

Prediction Model for Connected Voids Ratio of the Porous Asphalt Mixture

2020

Advances in Civil Engineering

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The practice showed that the difficulty to precisely predict the water permeability of the asphalt mixture by porosity creates the problem of the discrepancy between the material design and its function. And in the porous asphalt mixture, it is the connected voids ratio that truly bears the function of water permeability. However, there are many factors influencing the connected voids, and their influence laws remain to be known. Having analyzed the effects of different technical parameter on connected voids, 135°C rotation viscosity parameter was chosen in this paper to study the influences of properties of the asphalt mixture on connected voids. The equivalent width among framework gaps was quantified. The relation between the equivalent width, passing ratio of key sieve, and connected voids was discussed, and hence the prediction model for connected voids was established. The research showed that asphalt mixture with high 135°C rotation viscosity of asphalt had smaller connected voids, but the viscosity had less influence on connected voids ratio of asphalt mixture with larger equivalent width among framework gaps. The larger the equivalent width among framework gaps, the bigger the connected voids ratio. The passing rate of 2.36 mm sieve increased; both voids ratio and connected voids ratio became smaller and the difference value between them increased. Since the limitations of the composite specimens limited the prediction range, when the passing rate of 2.36 mm gradation was too small, there was a huge difference between the prediction value and the actual value. This model can predict the connected voids ratio under the stage of gradation design, thus saving the experiment time, shortening the design period, and providing some guidance to the adjustment of the raw material choosing and gradation.

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Section: Introductionmentioning

confidence: 88%

Prediction Model for Connected Voids Ratio of the Porous Asphalt Mixture

2020

Advances in Civil Engineering

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“…Concerning the subfield of pavements although being one of the major civil infrastructures represents a small subset in the larger field of civil engineering. It is worth noting that according to [21], the total mileage of roads has reached 70 million kilometers. Still, other authors [22] are more modest mentioning that asphalt roads span a distance of more than three times around the sun (around 13 million kilometers).…”

Section: Scientific Production On Civil Engineering and Pavementsmentioning

confidence: 99%

“…And also why on June 13, 2019, it was considered one of the 100 Radical Innovation Breakthroughs (RIBs) for the future by a report of the European Commission [45]. Jiang et al [21] recently presented a review on the performance, applications, and challenges of six environmentally friendly functional pavement materials, namely the permeable asphalt concrete, noise-reducing pavement materials, low heatÀabsorbing pavement materials, exhaust gasÀdecomposing pavement materials, deicing pavement materials, and energy harvesting pavement materials. For energy harvesting, they have included piezoelectric pavements, photovoltaic powergenerating pavements and also thermoelectricity pavements.…”

Section: Scientific Production On Civil Engineering and Pavementsmentioning

confidence: 99%

Introduction to eco-efficient pavement materials

Pacheco-Torgal

Amirkhanian

2020

Eco-Efficient Pavement Construction Materials

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Almost 50 years ago several scientists used a system dynamics computer model to simulate the interactions of population, food production, industrial production, pollution, and consumption of nonrenewable natural resources, having predicted that during the 21st century the Earth's capacity would be exhausted, resulting in the collapse of human civilization [1]. Two decades later, in an update of this study, the same authors showed that some limits had already been crossed [2]. Meadows et al. [3] conducted a 30-year update of the original study and concluded that period was nothing than a waste of time and that Humanity has done very little to avoid the collapse of the Planet's environment. Turner [4] also studied Meadows' projections with 30 years of real events and concluded that the global system is on an unsustainable trajectory unless there is a substantial and rapid reduction in consumptive behavior. One year later Rockström et al. [5] suggested an innovative approach for global sustainability defining nine interdependent planetary boundaries. They also stated that humanity has already transgressed three planetary boundaries for changes to the global nitrogen cycle, rate of biodiversity loss, and above all climate change. More details on the suggested planetary boundaries framework can be found in Ref. [6]. The UN Intergovernmental Panel on Climate Change released a special report warning that "Limiting global warming to 1.5 C would require rapid, far-reaching, and unprecedented changes in all aspects of society" [7]. The target of 1.5 C is being the threshold beyond which climate change would imperil species survival. Randers et al. [8] stated that the world will not reach all Sustainable Development Goals by 2030, nor by 2050, and that the global safety margin will continue to decline. And in truth, Distelkamp and Meyer [9] mentioned that although the global average CO 2 intensity is projected to decline against 2015, it is expected that global CO 2 emissions will further increase by 44% up to 53 Gt in 2050. In order to keep economy running, several institutions such as UNEP, World Bank or the European Commission thus claim for green economy and green growth that is expected to do more with less while improving human wellbeing and social equity but some believe that that is not compatible with the ecologic limits of the Planet [10]. Some authors [11] stated that using a low-tech approach can not only contribute to an increase in resilience but can also create the Eco-efficient Pavement Construction Materials.

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“…With the objective of improving the electric conductance of asphalt concrete, Rew et al experimented powdered carbon‐based additives and found that the electric conductance could be significantly improved by adding 2% to 3% of filler size flake graphite by volume of asphalt concrete. A recent review by Jiang et al has provided exhaustive information on the potential eco‐friendly and energy harvesting pavement materials. Use of phase change materials (PCM) in pavements has been widely explored in the recent past to improve the heat storage as well as self‐healing characteristics of pavements …”

Section: Materials For Pavement Energy Harvestingmentioning

confidence: 99%

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

2019

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Summary Energy harvesting from pavements has been a topic of extensive research in the recent past. This domain has attracted not only the research community but also the industry and governmental authorities. The various sources exploited for energy harvesting from pavements and roadways are solar radiation, mechanical energy dissipated due to moving vehicles and pedestrians, geothermal energy, rainwater, and wind. This article presents an exhaustive and updated review of all potential means of energy harvesting from these sources. Following the introductory section, the article sequentially covers the energy harvesting methods and their research progress, materials, development of practical systems, commercial status, comparison of technologies, challenges, and concluding remarks. This study reveals that there is wide scope for further research and feasibility studies, which could lead to a wide‐spread implementation of the various technologies for energy harvesting from pavements and roads.

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A review of eco-friendly functional road materials

Cited by 49 publications

References 93 publications

Prediction Model for Connected Voids Ratio of the Porous Asphalt Mixture

Prediction Model for Connected Voids Ratio of the Porous Asphalt Mixture

Introduction to eco-efficient pavement materials

Energy harvesting from pavements and roadways: A comprehensive review of technologies, materials, and challenges

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