In this paper, a 2D-wavelet transform approach is proposed to. In this study, five asphalt mixture types of AC-5, AC-13, AC-16, SMA-13, SMA-16 were prepared under three conditions of the original state, ice and snow. Smooth dark grey asphalt pavement texture background with small rocks. In ice and snow weather, the surface texture characteristics of asphalt pavement change, which will significantly affect the skid resistance performance of asphalt pavement.
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Finally, experimental tyre/road noise and enveloped texture data obtained with the indenter algorithm have been used to elaborate a linear model that relates low and high frequency noise to texture one-third octave bands. Find & Download Free Graphic Resources for Asphalt. Correlation patterns show that rolling noise can be separated in three main contributions: low, middle and high frequency noise. The first algorithm, proposed by Von Meier and based on the limitation of the second order derivative of the profile signal, shows poor correlation with high frequency noise, while the second algorithm, based on a novel method proposed by Sandberg and Goubert and called indenter method, enhances correlation with low frequency noise and preserves information at higher frequencies. Tyre deformation has also been addressed by analysing two already existing tyre envelopment algorithms. Fine-Graded Aggregate: A gradation having a continuous grading in sizes of particles from coarse through fine with more material smaller than the primary. The present work studies the correlation between road texture and tyre/road noise from an experimental point of view, by analysing texture and noise spectra on ten different road surfaces. Several studies tried to find a correlation between road texture and broadband noise data, trying to provide guidelines for the development of acoustically optimised road surfaces.
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The main source of road traffic noise is tyre/road interaction thus, the use of low noise road surfaces represents an optimal solution for its mitigation. Finally, the calculation of the road surface texture index parameters were performed in 3D reconstruction software module. Road traffic noise is the most common source of environmental pollution in urban areas and therefore, the study of noise mitigation actions is fundamental for urban planning.
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