scholarly journals Investigation of Particle-Related Clogging of Sustainable Concrete Pavements

2018 ◽  
Vol 10 (12) ◽  
pp. 4845 ◽  
Author(s):  
Aryssa Marcaida ◽  
Tan Nguyen ◽  
Jaehun Ahn
Keyword(s):  
Permeability Coefficient ◽  
Low Impact Development ◽  
Concrete Pavements ◽  
Permeability Reduction ◽  
Permeable Pavement ◽  
Sustainable Concrete ◽  
Discharge Velocity ◽  
Severe Reduction ◽  
Sand Particles ◽  
Surface Permeability

Permeable pavement has been considered an effective low impact development (LID) strategy in attempts to mitigate the environmental impacts of natural surface depletion brought about by urbanization. A concern associated with the pavement’s hydraulic performance is its sensitivity to clogging. This study aims to investigate the permeability reduction due to particle-related clogging of pervious concrete (PC), a type of sustainable pavement surface. Permeability tests revealed that the flow within PC samples shows turbulence, and a nonlinear relationship between discharge velocity and hydraulic gradient is necessary to measure the permeability coefficient. Permeability loss due to particle-clogging is influenced by the size of both PC aggregates and clogging particles. Clogging with graded sand particles causes more severe reduction compared to single-sized sands.

Study on Permeability Coefficient of Different Bamboo/Fir Veneer Surface

2011 ◽  
Vol 311-313 ◽  
pp. 1634-1637 ◽  
Author(s):  
Li Hong Yao ◽  
Xi Ming Wang ◽  
Ben Hua Fei
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Permeability Coefficient ◽  
Phenolic Resin ◽  
Chinese Fir ◽  
Raw Material ◽  
Important Indicator ◽  
Veneer Surface ◽  
Surface Permeability ◽  
Analysis Models

Permeability coefficient is an important indicator of surface wettability and permeability, which influenced by the surface roughness. In this paper, bamboo and fir veneer as raw material, the contact angle of phenolic resin adhesives in different surface roughness of outer cuticle of bamboo, inner skin of bamboo, tight side of Chinese fir veneer and loose side of Chinese fir veneer were measured, and then use the software Spass non-linear fitting for permeability coefficient, and analysis of variance of the results by SAS software. The results show that permeability coefficient of four different kinds of surface variance analysis models are significantly, permeability coefficient of fir veneer is larger than bamboo surface; permeability coefficient of tight side of fir veneer is larger than loose side; permeability coefficient of inner skin of bamboo is larger than outer cuticle of bamboo. Permeability coefficients decrease first and then increased when mesh sandpaper increasing.

scholarly journals Evaluation model of LID facilities based on the influence of water resource value

2021 ◽  
Author(s):  
Yanyan Pei ◽  
Hai Yu ◽  
Yongpeng Lv ◽  
Jiangnan Wu ◽  
Longbin Yang ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Resource ◽  
Evaluation Model ◽  
Low Impact Development ◽  
Green Roofs ◽  
Recurrence Interval ◽  
Resource Value ◽  
Permeable Pavement ◽  
Bay Area ◽  
Value Of Water

Abstract Low-impact development (LID) facilities can not only effectively control rainwater runoff and its pollution, but also enhance the value of urban water resources in water systems. Current studies usually pay more attention to the effect of pollution control indicators, and there are few reports on the evaluation of LID facilities from the perspective of enhancing the value of water resources. Taking the Maluan Bay area of Haicang, Xiamen as an example, an evaluation model of water resource value was established based on the SWMM software and the pollution loss model. From the perspective of economic quantification, the value of water resources brought by three types of LID facilities, such as green roofs, permeable pavement and infiltration gallery, under rainfall conditions in different recurrence intervals was simulated and calculated. In the single rainfall event of 1–10a recurrence interval, the water resource value brought by the green roofs is 679.14–787.49 RMB/hm2, the permeable pavement is 79.07–383.37 RMB/hm2 and the infiltration gallery is 825.45–1,021.79 RMB/hm2. The results show that the value of water resources brought by the three types of LID facilities decreases with the increase of rainfall recurrence interval.

scholarly journals Different Approaches to Develop More Sustainable Concrete Alternatives

2021 ◽  
Author(s):  
Mauricio Pradena ◽  
Andrés César
Keyword(s):  
Sustainable Development ◽  
Structural Design ◽  
Concrete Durability ◽  
Concrete Pavements ◽  
Self Healing ◽  
Domestic Waste ◽  
Concrete Material ◽  
Sustainable Concrete

As important as it is, sustainability related with the concrete material is more than reducing the amount of cement in concrete mixes. In effect, there can be other types of contributions to a sustainable development using this fundamental material. The purpose of this book chapter is to analyse some of these approaches, in particular, concrete durability, reducing the amount of required concrete (and then cement) through innovative structural design, and reducing the amount of aggregates used in the concrete material. More specifically, examples and results obtained in Chile with biological self-healing concrete, thinner concrete pavements and concrete with industrial and domestic waste as partial aggregate replacement are included in the chapter. Due to its importance, the geo-dependency of the concrete material is addressed as well.

scholarly journals Prediction Models Based on Regression and Artificial Neural Network for Moduli of Layers Constituted by Open-Graded Aggregates

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1199
Author(s):  
Yunje Lee ◽  
Yongjin Choi ◽  
Donghyun Ahn ◽  
Jaehun Ahn
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Urban Area ◽  
Low Impact Development ◽  
Load Test ◽  
Engineering Properties ◽  
Rapid Urbanization ◽  
Permeable Pavement ◽  
Material Type ◽  
Artificial Neural

The impermeable cover in urban area has been growing due to rapid urbanization, which prevents stormwater from being naturally infiltrated into the ground. There is a higher chance of flooding in urban area covered with conventional concretes and asphalts. The permeable pavement is one of Low-Impact Development (LID) technologies that can reduce surface runoff and water pollution by allowing stormwater into pavement systems. Unlike traditional pavements, permeable pavement bases employ open-graded aggregates (OGAs) with highly uniform particle sizes. There is very little information on the engineering properties of compacted OGAs. In this study, the moduli of open-graded aggregates under various compaction energies are investigated based on the Plate Load Test (PLT) and Light-Weight Deflectometer (LWD). Artificial Neural Network (ANN) and Linear Regression (LR) models are employed for estimation of the moduli of the aggregates based on the material type and level of compaction. Overall, the moduli from PLT and LWD steeply increase until the number of roller passes reaches 4, and they gradually increase until the number of roller passes becomes 8. A set of simple linear equations are proposed to evaluate the moduli of open-graded aggregates from PLT and LWD based on the material type and the number of roller passes.

scholarly journals Selection of best stormwater management alternative based on storm control measures (SCM) efficiency indices

Water Policy ◽  
2020 ◽  
Vol 22 (4) ◽  
pp. 702-715
Author(s):  
Abhinav Wadhwa ◽  
K. Pavan Kumar
Keyword(s):  
Stormwater Management ◽  
Tamil Nadu ◽  
Low Impact Development ◽  
Control Measures ◽  
Percentage Increase ◽  
Permeable Pavement ◽  
Runoff Reduction ◽  
Management Alternative ◽  
Institute Of Technology ◽  
Peak Runoff

Abstract Overcoming conventional stormwater management problems and finding appropriate control methods for safely discharging excess runoff from impervious areas is an essential part of any sustainable urban planning. This study aims to analyze the performance of different storm control measures (SCMs) applied to Vellore Institute of Technology (VIT) campus situated in Vellore, Tamil Nadu, which is a highly urbanized catchment. Different SCMs were designed for the VIT campus based on low impact development (LID) options available in stormwater management model (SWMM) software. The most suitable SCM was selected based on its ability to match pre-urbanized hydrographs as close as possible. The SCM location was identified by a localized survey, in such a way that there is least disturbance to the existing storm sewer network. The percentage reduction of peak flow under each proposed SCM were obtained as follows: bio-retention (19.8%), rain garden (18.69%), green roof (49.17%), infiltration trench (20.02%), permeable pavement (22.6%), rain barrel (12.95%), rooftop-disconnection (10.79%) and vegetative swales (17.23%). The results indicated that Option 9 (combination of permeable pavement and bioretention) and Option 10 (permeable pavement and infiltration trench) were better at reducing peak runoff and increasing infiltration. The peak runoff reduction for Options 9 and 10 were observed to be 32.05 and 39.81%, whereas the percentage increase in infiltration was observed to be 25.7 and 29.45% respectively.

scholarly journals Improving Restorative Maintenance Practices for Mature Permeable Interlocking Concrete Pavements

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1588 ◽  
Author(s):  
Kirti Sehgal ◽  
Jennifer Drake ◽  
Tim Seters ◽  
William Vander Linden
Keyword(s):  
Surface Treatment ◽  
Low Impact Development ◽  
Surface Treatments ◽  
Concrete Pavements ◽  
Infiltration Capacity ◽  
Parking Lot ◽  
Treatment Technologies ◽  
Over Time ◽  
Effect Of Surface

Permeable Interlocking Concrete Pavements (PICP) are a Low Impact Development (LID) technology that reduce the total volume of stormwater discharge and peak flows from urban hardscapes. Over time, particulates accumulate in the PICP joints, decreasing the pavement’s surface infiltration capacity and negatively affecting its overall functionality. Maintenance with two surface treatment technologies, a hand-held power brush and pressure washer-used in combination with vacuum street sweepers were compared to maintenance with vacuum street sweepers alone at four PICP parking lots. Both surface treatments along with vacuum street sweeping significantly improved the restoration of infiltration capacity for the young (i.e., <4 years) PICP section. Pressure washing in combination with vacuum sweeping was effective for PICP sections with larger (13–14 mm) joint openings. Power brushing, however, provided inconsistent results between the PICP sections. The effect of surface treatments was not significant for older (i.e., >6 years) installations with small (3–4 mm) joint openings. Though surface treatment resulted in significant improvement with a pressure washer and vacuum street sweeper combination, usage intensity of the parking lot was deemed as an important factor in restoring infiltration capacity. These findings re-emphasize that regular maintenance is essential to ensure long-term hydraulic functionality of PICP.

scholarly journals Cumulative Effects of Low Impact Development on Watershed Hydrology in a Mixed Land-Cover System

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 991 ◽  
Author(s):  
Nahal Hoghooghi ◽  
Heather Golden ◽  
Brian Bledsoe ◽  
Bradley Barnhart ◽  
Allen Brookes ◽  
...  
Keyword(s):  
Land Cover ◽  
Management Practices ◽  
Agricultural Land ◽  
Low Impact Development ◽  
Riparian Buffers ◽  
Watershed Scale ◽  
Rain Gardens ◽  
Watershed Hydrology ◽  
Permeable Pavement ◽  
Stormwater Management Practices

Low Impact Development (LID) is an alternative to conventional urban stormwater management practices, which aims at mitigating the impacts of urbanization on water quantity and quality. Plot and local scale studies provide evidence of LID effectiveness; however, little is known about the overall watershed scale influence of LID practices. This is particularly true in watersheds with a land cover that is more diverse than that of urban or suburban classifications alone. We address this watershed-scale gap by assessing the effects of three common LID practices (rain gardens, permeable pavement, and riparian buffers) on the hydrology of a 0.94 km2 mixed land cover watershed. We used a spatially-explicit ecohydrological model, called Visualizing Ecosystems for Land Management Assessments (VELMA), to compare changes in watershed hydrologic responses before and after the implementation of LID practices. For the LID scenarios, we examined different spatial configurations, using 25%, 50%, 75% and 100% implementation extents, to convert sidewalks into rain gardens, and parking lots and driveways into permeable pavement. We further applied 20 m and 40 m riparian buffers along streams that were adjacent to agricultural land cover. The results showed overall increases in shallow subsurface runoff and infiltration, as well as evapotranspiration, and decreases in peak flows and surface runoff across all types and configurations of LID. Among individual LID practices, rain gardens had the greatest influence on each component of the overall watershed water balance. As anticipated, the combination of LID practices at the highest implementation level resulted in the most substantial changes to the overall watershed hydrology. It is notable that all hydrological changes from the LID implementation, ranging from 0.01 to 0.06 km2 across the study watershed, were modest, which suggests a potentially limited efficacy of LID practices in mixed land cover watersheds.

Sign in / Sign up

Export Citation Format

Share Document