Poor braking performance on runways during winter is one of the most significant factors causing runway excursions. The International Civil Aviation Organization (ICAO) proposed a standardized method, named Global Reporting Format (GRF), to establish surface conditions based human observers. GRF includes description conditions. This work aimed at reproducing in laboratory, and monitor effect co...

Construction and demolition waste (CDW) materials account for a considerable part of throughout the world. As these are not usually recycled, reusing them in construction projects is major significance. In this study, recycled concrete, bricks, glass were used as 100% aggregates chip seal, which corrective or preventive pavement maintenance method. A cationic rapid setting (CRS-2) bitumen emuls...

Skid resistance and road condition are common indices of road safety; therefore providing adequate skidding resistance will reduce the incidence of road accidents. The surface macrotexture has a large effect on the characteristics of road surface skidding, which is the focus of this research. During the study, the mean texture depth of the road surface was measured, in order to determine the co...

Both short-term and long-term variations have been observed in measured friction on pavement surface. These variations have been attributed to different factors, such as traffic, rainfall and temperature. Due to the fact that Hot Mix Asphalt (HMA) pavement surface and rubber tires are viscoelastic materials, it is believed that temperature may affect the measured frictional properties. Some res...

Anti-skid performance is the most critical indicator that reflects safety of road surface. A good anti-skid surface guarantees safe and fast driving vehicles. However, asphalt pavement highways has gradually exposed attenuation, which affects safety. Therefore, this study aims to accurately evaluate durability mixtures based on a 1/3-size accelerated loading test with different surfaces as rese...

To overcome the limitations of pavement skid resistance prediction using friction coefficient, a genetic-algorithm-improved neural network (GAI-NN) was developed in this study. First, three-dimensional (3D) point-cloud data an asphalt surface were obtained smart sensor (Gocator 3110). The coefficient then pendulum tester. 3D dataset analyzed to recover missing and perform denoising. In particul...

OBJECTIVES To challenge the problem of slipperiness, various slipmeters have been developed to assess slip hazard. The performance of in-situ slipmeter is, however, still unclear under the various floor conditions. The main objectives of this study were to evaluate the performance of three kinds of slipmeters under real conditions, and to find their dynamic and kinematic characteristics, which ...