Konstantina Georgouli

National Technical University of Athens | NTUA · Department of Transportation Planning

Non-destructive testing (NDT) systems are essential tools and are widely used for assessing the condition and structural integrity of pavement structures without causing any damage. They are cost-effective, provide comprehensive data, and are time efficient. The bearing capacity and structural condition of a flexible pavement depends on several int...

Asphalt mix air void content is a dominant parameter for asphalt mix design. The air void content of the mix affects the mechanical property of stiffness, while both characterize compacted asphalt mix materials. On the other hand, asphalt mix as a composite material can be characterized by its dielectric value. Considering the above, the aim of the...

Pavement condition largely determines its long-term behavior and is of paramount importance for rehabilitation and maintenance management. The use of non-destructive testing (NDT) systems to assess pavement condition has gained much popularity. Often, well-known NDT systems are combined to take full advantage of the capabilities of each system. Com...

Recent research studies have provided useful insights into the impact of the Autonomous Trucks ’s (AT) wheel wander on pavement performance. However, only a single road structure, asphalt mix stiffness and asphalt mix thickness are considered in these studies. With these in mind, the present study aims to extend previous limited research results an...

Rutting is one of the failure modes in flexible pavements and is associated with reduced pavement serviceability since it results in aquaplaning, reduced skid resistance and increased roughness. Variations in material characteristics influence significantly the rutting resistance of asphalt mixes. Dynamic modulus (E*) is a fundamental property of H...

Autonomous vehicles (AVs), including trucks, are already available and their adoption is coming at a rapid pace. Despite the fact that this new transportation technology will travel on existing pavement infrastructure assets, the study and investigation of the AVs structural impact on pavements has not reached the same level of attention and maturi...

The present study deals with the quantification of skid resistance seasonal variation in asphalt pavements. Consequently, skid resistance data were collected twice per year (after “wet” and “dry” seasons) along four trial sections of an urban highway with a GripTester system (during a six-year field experiment). For the estimation of a percentage r...

The current paper outlines the necessity to incorporate Ground Penetrating Radar (GPR) during assessment procedures in order to increase the accuracy of backcalculated results through the increased accuracy provided for test location thickness data. The focus is on the assessment of a pavement that has undergone full depth reclamation with foamed a...

The dynamic modulus (\(E^{*}\)) of Hot Mix Asphalt (HMA) mixtures is a key input parameter in the Mechanistic-Empirical (M-E) pavement design and analysis processes for the prediction of fatigue and rutting damage. The determination of \(E^{*}\) in the laboratory requires specialized equipment and is an overall time consuming procedure. With this i...

The aim of the present study is the evaluation of the Witczak 1-37A, Bari & Witczak, NCHRP 1-40D and Hirsch models for the estimation of dynamic modulus (E∗) and the subsequent calibration of the model to best fit with laboratory reference data of the material under investigation. For this purpose asphalt mixture specimens for both asphalt base and...

Pavement management activities consist mainly of three sequential yet interconnected processes: condition assessment, performance prediction and needs analysis. On this basis, knowledge of the evolution of skid resistance over time is important for pavement maintenance/rehabilitation planning. Seasonal and long term variations have a significant ef...

The pavement structural condition is one of the main factors to be taken into account for pavement maintenance planning. Therefore, more efficient methods for pavement monitoring and structural evaluation are required in order to ensure a good serviceability and to provide adequate maintenance solutions for the pavements. Non destructive testing (N...

The stiffness modulus is an important factor for asphalt mixture characterization, and multiple procedures and theories have been developed, as shown in international literature, to determine the stiffness moduli. Among these, the dynamic modulus (E*) has played an increasingly important role in recent years, with the E*being introduced as a key el...

Ground Penetrating Radar (GPR) is a Non Destructive Testing (NDT) technique that has been developed and improved upon over the past 30 years. The technique is frequently utilized in order to evaluate and assess pavement structures. GPR, for pavement evaluation purposes, can be described as a remote sensing system that emits a short pulse, of electr...