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Effect of groove width and shape on concrete pavement skid resistance

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Author: 
Erhan Burak Pancar, Zeki Karaca and Muhammet Vefa Akpinar
Abstract: 

The importance of surface texture characteristics of concrete pavement to reduce wet-weather accidents caused by skidding is well recognized by civil engineers. Sufficient transverse and longitudinal grooving provide good friction characteristics during wet weather conditions. Although considerable information exists on asphalt pavement surface friction characteristics on safety by British Pendulum Test, very limited attempt has been made to address concrete pavement friction characteristics on the longitudinal and transvers grooved surface effects. In this study, British Pendulum Tests were conducted on longitudinal and transvers grooved concrete samples with different groove width and shape. According to the regression analyses same skid resistance values are expected for wet and dry conditions at groove width of 11 mm for longitudinal grooves with sharp corner. If the longitudinal groove corner is rounded, higher British Pendulum Number (BPN) can be obtained for wet and dry conditions with smaller groove width. Transverse grooves have higher BPN than longitudinal grooves for the same groove width. BPN increases by increasing transverse groove width and the effect of groove shape is different for different groove widths.

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