Abstract
Standard method to assess the pavement profile is to calculate the MPD (Mean Profile Depth) index based on results obtained usually by usage of laser techniques. In analysis the models of the surface pavements have been used in order to calculate the s1, s2, s3 parameters values corresponding to mega-, macro- and microtexture respectively. The values of the developed parameters s1, s2, s3 are calculated from the specific power spectral density values of surface roughness obtained for the threshold pavement roughness wavelength equal to 0.1, 0.05, 0.005 and 0.0005 m. The skid resistance has been correlated to the s1, s2, s3 parameters using 11 varied cases related to asphalt and concrete pavements. Skid resistance tests have been performed using CSR (Continuous Skid Resistance) device with fixed slip ratio equal to 13%. Three different test speed values 45, 65 and 95 km/h have been used. The obtained results lead to factorial correlation equations between developed parameters and skid resistance indices. Correlation results for uncontaminated pavement surface can be characterized by the coefficient of determination values in range between 0.55 and 0.94. The results can be used for contactless determination of pavement skid resistance in Pavement Management System.
Highlights
Road pavement diagnosis is a part of Pavement Management System (PMS)
Based on the results of the skid resistance tests and pavement roughness obtained from photogrammetric method the relationship between these values was specified
Three different types of equations were used in order to calculate skid resistance index from values based on the power spectral density of pavement roughness
Summary
Road pavement diagnosis is a part of Pavement Management System (PMS). To manage the road network there is need to assess each parameter in reliable and effective way. In this paper there has been performed an attempt to evaluate skid resistance by using the model of pavement surface roughness. Laser based parameters are widely used to assess the pavement surface profile. Other method is to measure force needed to drag the rubber elements on the pavement surface. In this case DFT [2] and British Pendulum Tester [4] should be mentioned. Results of measurement consisting of both methods have been correlated with (commonly used on Polish national roads) skid resistance tester - SRT [5]
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