Relationship of Aggregate Microtexture to Asphalt Pavement Skid Resistance

Abstract

Aggregate properties are one of the important factors that influence the asphalt pavement skid resistance. This paper presents a detailed analysis of aggregate texture and its relationship to pavement skid resistance. A new method is developed for the evaluation of aggregate resistance to polishing. This method relies on the Micro-Deval test as the mechanism for polishing aggregates and the Aggregate Imaging System (AIMS) for quantifying the change in texture due to polishing. The results show that the Micro-Deval test is an effective method for polishing aggregates within a short time. Also, the AIMS texture analysis is able to rapidly and accurately quantify the influence of polishing on texture. The verification of the new method was achieved through measuring the skid resistance of pavements constructed using three different aggregate sources and three different aggregate gradations. The skid resistance was found to be related not only to average aggregate texture, but also to the texture distribution within an aggregate sample. The developed method can be used in models for predicting the change in asphalt pavement skid resistance as a function of aggregate texture, mixture properties, and environmental conditions.

A skid resistance prediction model for an entire road network

“…However, as the micro-texture has a vital role in the skid resistance, the aggregate properties become a fundamental characteristic. Aggregate properties like hardness and mineralogy, shape, texture, angularity, abrasion or wear resistance, and soundness were demonstrated to have an influence on the available friction [3,16,[25][26][27][28][29][30][31][32]. Nevertheless, the most important property is the polish resistance, defined as the capability to retain its microtexture after being grinded and sheared by repeated traffic loadings [18].…”

Site Assessment of Surface Texture and Skid Resistance by Varying the Grit Parameters of an SMA

“…Skid resistance is developed when the wheel prevents rotating along the pavement surface; it is one of the most important indicators of traffic safety. Skid resistance of a pavement depends on a wide variety of factors such as surface texture, material properties, type of pavement, and traffic (Luce et al 2007;Mahboob Kanafi et al 2015;Wang et al 2015). Skid resistance of a pavement decreases with repetitions of traffic and increases the risk of skidding of vehicles, especially on wet surfaces.…”

Avaliação Do Comportamento Característico De Rochas Vulcânicas Da Formação Serra Geral E Sua Implementação Em Obras Rodoviárias

“…Tais afloramentos são passíveis de variações litológicas, estruturais, de mineralogia do preenchimento e de grau de alteração que tendem a imprimir mudanças comportamentais na qualidade da matéria prima rochosa e, por sua vez, no agregado britado, afetando significativamente o desempenho e qualidade dos pavimentais aos quais serão implementados (Al-Harthi, 2001;Pan et al, 2006;Masad et al, 2007).…”