Evaluation of in-situ permeability measurement methods for pervious concrete pavement
URBAN WATER JOURNAL(2023)
Abstract
The permeability coefficient is the foundation of evaluating the clogging and maintenance. In this study, 384 field tests were carried out on 9 positions using single-ring and double-ring permeameters with different diameters. Both falling head and constant head methods were evaluated. At the same time, core samples were drilled from the 9 test positions, and their permeability coefficients were measured in the laboratory. The results show that there is a good correlation between falling head method and constant head method, both of them can be used to measure in-situ permeability coefficient of pervious pavement. Although the double-ring method can reduce the transverse seepage inside the pavement, the effect of double-ring permeameters with different cylinder diameters is different, and permeameters with larger cylinder diameters are better. For sites with permeability greater than 2 mm/s, it is not recommended to use permeameters with small cylinder diameters..
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Key words
Pervious concrete pavement, permeability, falling head method, constant head method, double-ring permeameters
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