Analysis of permeability reduction in drainage asphalt mixtures due to decrease in void volume

While rainwater harvesting can provide additional water resources, this approach is largely undertaken using water from roofs. More recently, the potential for using stormwater harvested from permeable pavements was recognised as a potential additional water resource. The objective of this study was to estimate the reduction of environmental impacts caused by traditional drainage systems and centralised water utilities if permeable pavement systems were used to harvest stormwater for nonpotable purposes in buildings. The lifecycle environmental impacts and costs associated with the proposed pavements and hydraulic systems were assessed. The city of Glasgow was chosen as a case study. We used the Netuno computer programme to estimate the potential for potable water savings considering the use of stormwater for nonpotable purposes and the SimaPro software to perform a lifecycle assessment (LCA). With the implementation of permeable pavements and stormwater utilisation, great reductions in lifecycle emissions (i.e., CO2-, SO2-, and PM2.5-equivalent emissions) were observed. The proposed system also proved to be economically feasible, i.e., a payback period equal to 16.9 years. The results show the economic and environmental feasibility of permeable pavements when used on a large scale, proving to be an important strategy to reduce water and environmental stresses caused by centralised water utilities and traditional drainage systems.

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“…The 20% losses include aggregate absorption and evaporation. The pavement is cleaned twice a year, as recommended by Garcia et al [34].…”

Section: Potential For Potable Water Savingsmentioning

confidence: 99%

Reduction of Environmental Impacts Due to Using Permeable Pavements to Harvest Stormwater

Antunes

Sydney

Ghisi

et al. 2020

Water

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“…As the filtration volume increased, the permeability coefficient values greatly decreased, and the slope of the permeability coefficient curve at the initial stage was significantly higher than that at the later stage. During the initial infiltration process, the interior of the permeable brick was relatively clean, and large particles quickly precipitated in the voids inside the brick and blocked the outflow pores of the effluent, which led to a rapid decrease in the permeability coefficient [24,25]. With the increase of the filtration volume, small particles were either tightly adhering to the pores or captured and bonded by the large particles, which gradually blocked the pores of permeable brick.…”

Section: Permeability Coefficient Of Permeable Brickmentioning

confidence: 99%

Study on the Process and Characteristics of Clogging for Ceramic Permeable Brick

Lin

Yang²,

Chen

2021

Advances in Civil Engineering

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A ceramic permeable brick was selected for study in a device that was designed to fully investigate the process and characteristics of clogging in permeable bricks. In order to evaluate the permeability influenced by clogging, a simulated rainfall was filtered through the permeable brick placed in an innovative device. The macroscopic and microscopic changes in the brick and the filtrate were all measured to fully investigate the causes and process of clogging. Then, the mechanism of clogging in the permeable brick pores was further discussed. The results showed that the clogging risk of permeable brick was extremely high, and it can result in a complete clogging in only 5–10 years under the experimental conditions. The permeability coefficient and porosity both decreased exponentially with the increase in filtrate, which was attributed to the clogging of the internal pore structure due to particle interception. The chord size distribution results stressed that the blockage mainly occurred in the upper layer pores in the range of 0.5–1.5 mm, which is relatively sensitive to clogging due to the particle size distribution in rain water. The particle size distribution of the influent and effluent indicated that the clogging process could completely remove particles larger than 88 µm but showed variable removal efficiency for particles with sizes of 20–88 µm. This research offers new insight into the clogging of permeable bricks and provides theoretical guidance for restoring the brick permeability.

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“…Studies that evaluate the service life and methods to reduce the effects of clogging are essential to understand the effectiveness of the system, as well as the establishment of a strict control plan to not prematurely end the pavement efficiency. Permeable coatings and pavements present a high volume of voids, [17,48] with clogging responsible for filling the communicating voids and consequently decreasing the whole system's permeability.…”

Section: Cloggingmentioning

confidence: 99%

“…Antunes et al [46] indicate the need to vacuum the permeable pavement twice a year, in order to maintain permeability, a more conservative measure than the one indicated by Garcia et al [48]. Also, the environmental impacts of pavement maintenance were not great compared to the other steps of the project.…”

Section: Clogging Maintenance and Operational Aspectsmentioning

confidence: 99%

“…All papers state similar periods of maintenance, between 2 and 3 times a year. Also, the considerations favour pavement safety and durability, as the Garcia et al [48] study state once a year as the minimum period required. All research works emphasised the difficulty of finding Brazilian companies specialized in cleaning permeable pavements.…”

Section: Clogging Maintenance and Operational Aspectsmentioning

confidence: 99%

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Permeable Pavements as a Means to Save Water in Buildings: State of the Art

Vaz¹,

Antunes²,

Ghisi³

et al. 2021

Preprint

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Permeable pavements have been the subject of numerous studies in recent decades. The possibility of dissipating stormwater more smoothly and generating numerous benefits to the environment and users makes the use of permeable pavements an excellent possibility of integration into sustainable and resilient water management systems in cities. In Brazil, numerous studies on the quantity and quality of infiltrated water, permeability of the coating, clogging, environmental burden, feasibility, among other characteristics, have been researched. Within this theme, the Federal University of Santa Catarina (UFSC) has contributed with ten papers in the research of permeable pavements in the last six years, which address various topics about the effectiveness and applicability of permeable pavements. This paper reviews the studies conducted at UFSC on permeable pavements and discusses the different results within the main issues found. In general, the selected documents addressed seven themes in the studies: potential for potable water savings, clogging, quantity and quality of the water infiltrated into the pavement, Life Cycle Assessment (LCA) and its variants, and hydraulic and structural design details. More specifically, many selected papers assess the potential use of stormwater harvested through permeable pavements in non-potable uses of buildings. The possibility of aligning the benefits of green infrastructure with the rational use of water expands the advantages of the system and can help prevent future water scarcity, as well as reduce the environmental impacts of paving.

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Analysis of permeability reduction in drainage asphalt mixtures due to decrease in void volume

Cited by 28 publications

References 9 publications

Reduction of Environmental Impacts Due to Using Permeable Pavements to Harvest Stormwater

Reduction of Environmental Impacts Due to Using Permeable Pavements to Harvest Stormwater

Study on the Process and Characteristics of Clogging for Ceramic Permeable Brick

Permeable Pavements as a Means to Save Water in Buildings: State of the Art

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