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Journal of Infrastructure Preservation and Resilience
Fig. 2 | Journal of Infrastructure Preservation and Resilience

Fig. 2

From: Review of porous asphalt pavements in cold regions: the state of practice and case study repository in design, construction, and maintenance

Fig. 2

Short-term infiltration rate and restorative maintenance for porous asphalt pavements at (a) MnROAD test sections, MN, USA [32] and (b) Alberta1, Canada [10] and Toronto2, Canada [15, 16]. (Acronym: Inf. = infiltration; M.T. = maintenance; VS = vacuum sweeping; HS = hand sweeping; PW = pressure washing; LSVS: low suction vacuum sweeping (airflow of 5.95 m3/min.); HSVS = high suction vacuum sweeping (airflow of 7.93 m3/min.)). 1The infiltration rate of this project is calculated based on the average testing results along the center of the pavement. 2The initial infiltration rate of this project is not available and the dashed line is extrapolated

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