A5011935109- Asphalt Pavement Performance Evaluation
- Infrastructure Maintenance and Monitoring
- Innovative concrete reinforcement materials
- Geotechnical Engineering and Underground Structures
- Smart Materials for Construction
- Transport Systems and Technology
- Concrete and Cement Materials Research
- Rheology and Fluid Dynamics Studies
- Composite Material Mechanics
- Material Properties and Failure Mechanisms
- Natural Fiber Reinforced Composites
- Material Properties and Processing
- Polymer Nanocomposites and Properties
- Concrete Corrosion and Durability
- Numerical methods in engineering
- Tribology and Wear Analysis
- Urban Transport Systems Analysis
- Probabilistic and Robust Engineering Design
- Engineering and Material Science Research
- Recycled Aggregate Concrete Performance
- Diverse Research Studies Overview
- Acoustic Wave Phenomena Research
- Concrete Properties and Behavior
- Hydrogen embrittlement and corrosion behaviors in metals
- Transportation Planning and Optimization
University of Pisa
2014-2025
Aalto University
2022
Technische Universität Braunschweig
2017-2021
University of Florence
2016
This paper presents an investigation on the low-temperature properties of asphalt mixture determined with indirect tensile (IDT) and semi-circular bending (SCB) experimental methods. First, IDT notched unnotched SCB tests are performed a set ten different mixtures. Then, maximum stress (strength) along crack surface specimens is estimated using commercial finite-element software cohesive zone modelling. Finally, simple linear relations between numerically strength nominal value...
Significant volumes of waste materials such as plastics is generated every year worldwide with a potentially harmful impact on the environment. At same time, demand for asphalt modifiers has seen an increase over consequent higher costs these types additives. Therefore, combining large amounts available binder extender or modifier would improve paving material properties while limiting disposed waste. While several rheological studies have been performed in past, they were restricted to...
In this paper, the effect of combined use re-recycled Reclaimed Asphalt Pavement (RAP) on performance properties Warm Mix (WMA) was experimentally investigated at both binder and mixture scales. First, a virgin 50/70 Pen Grade fresh Gabbro aggregates were used to prepare conventional Hot (HMA) for surface layers as reference mixture. Then, same mix type produce designed with 40% RAP, 160/220 binder, Sasobit first generation (WMA-1) Next, WMA-1 artificially aged simulate design adopted second...
In this paper, the effect of physical hardening and aging temperatures on low temperature rheological properties asphalt binder is experimentally investigated modelled. First, Dynamic Shear Rheometer (DSR) tests are performed from −30°C to 80°C four virgin binders corresponding long-term aged binders, which were previously short-term at three different (123°C, 143°C, 163°C). Master curves generated evaluate impact temperatures, while also addressed through a simple testing procedure. Then,...
In this paper, the combined effect of aging temperatures and cooling medium on rheological properties asphalt binder was experimentally investigated evaluated. Two 70/100 penetration grade binders, which were part core materials used by active RILEM committee CMB-252, selected for purpose. The artificially aged to six different conditions, first with Rolling Thin Film Oven Test (RTFOT) at three (123°C, 143°C, 163°C), then, standard Pressure Aging Vessel (PAV). Next, temperature frequency...
In the present study, effects of adding fibers and Reclaimed Asphalt Pavement (RAP) on low temperature performances open graded asphalt mixtures for surface layer dense surface, binder, base layers were investigated. Two different kinds used: a combination aramid polyolefins utilized preparing fiber reinforced porous mixtures, while polyacrylonitrile employed producing conventional layers. Reference made with virgin materials as benchmark to study fibers' addition. Moreover, composed 30% RAP...
In order to improve the reclaimed asphalt pavement (RAP) dosing and road performance of recycled mixtures, this study prepared epoxy binder (ERB) mixtures (ERMs) by asphalt, respectively. The rheological characteristics microstructure ERB were comprehensively analyzed using a dynamic shear rheometer (DSR), bending beam (BBR), fluorescence microscopy (FM). ERM was evaluated four-point test, rutting trabecular freeze-thaw splitting an immersion Marshall uniaxial compression modulus test. Grey...
The interest in using bio materials asphalt pavements is growing considerably for economic reasons and environmental benefits. In literature, many coming from different sources obtained with processes can be found they served as additive, modifier or substitute of the fossil based binder. Most studies focusing on binder's additives modifiers percentage less than 10%. Some patented bio-binders are able to partially completely binder, but most them expensive resin synthetic polymers. It would...
The characterisation of asphalt binder at low temperature is fundamental importance for selecting and designing materials with good durable performance in regions experiencing severely cold climates. current specification addresses this issue based on the Performance Grading (PG) system, developed during Strategic Highway Research Program, low-temperature creep tests performed Bending Beam Rheometer (BBR). Recently, an alternative experimental method was proposed to relate complex modulus,...
The current experimental method used in Europe to characterise asphalt binder at high temperature is based on the Ring & Ball softening point. However, for modified binders it was demonstrated that such a unable correctly material. In present work, an alternative solution determine high-temperature properties of using dynamic shear rheometer (DSR) proposed: Binder-Fast-Characterisation-Test (BTSV) (Bitumen-Typisierungs-Schnell-Verfahren, German). Two parameters are identified rheological...
In this paper, the combined use of reclaimed asphalt pavement (RAP) and rejuvenators for producing hot recycled mixture is investigated based on new Bitumen Typisierungs Schnell Verfahren – BTSV method (Binder-Fast-Characterization-Test), recently proposed in Germany, through laboratory experimentation. For purpose, a set three different mixtures prepared with amounts RAP types rejuvenators. Then, used to obtain rheological properties binder extracted from mixtures. Resistance permanent...
This paper presents an experimental investigation on the combined use of high content reclaimed asphalt pavement (RAP) and rejuvenators, for producing mixtures wearing courses. First, new Binder-Fast-Characterization-Test (Bitumen Typisierungs Schnell Verfahren in German) BTSV method, recently proposed Germany, is used to determine amount rejuvenator required design recycled a specific RAP source. Then, set seven course prepared with different amounts three types rejuvenators. The procedure...
The possibility of using the dynamic shear rheometer (DSR) with 4 mm parallel plates and 3 gap is investigated as an alternative experimental method to measure rheological properties asphalt binders at low temperature. A special butterfly silicone mold was prepared for this purpose corresponding testing procedure also developed. Five different binders, which are part two active research projects, were selected. Frequency temperature sweep tests conducted DSR three plate–plate geometries: mm,...
The relationship between the different phases of asphalt materials, from binder to mastic and mixture, has received significant interest over years. Shift-Homothety-Shift in time-Shift (SHStS) transformation developed by research team École Nationale des Travaux Publics de l’État been found provide a very effective tool relate rheological properties binders those corresponding mixtures. In this paper, possibility using SHStS link behaviour that is investigated with objective proposing simple...
In this paper, the possibility of using air as an alternative cooling medium for testing asphalt binder in bending beam rheometer (BBR) is considered and evaluated. For purpose, five binders were characterized with BBR; creep stiffness, m-value, performance grade (PG), thermal stress, critical cracking temperature computed both ethanol air. addition, rheological Huet model was fitted to experimental measurements further investigate effect medium. It found that result stiffer materials,...
In this paper, the possibility of improving global response asphalt materials for pavement applications through use hydrated lime and Electric Arc-Furnace Steel Slag (EAFSS) was investigated. For purpose, a set mortars prepared by mixing two different binders with fine granite aggregate together or EAFSS at three percentages. Bending Beam Rheometer (BBR) creep tests Dynamic Shear (DSR) complex modulus were performed to evaluate material both low high temperature. Then, rheological Huet model...
In this present study, the effects of polyacrylonitrile fibres and high content (50%) Reclaimed Asphalt Pavement (RAP) on mechanical properties asphalt mixtures in binder base layers were studied. This is first time that effect RAP fibre reinforced (FRAM) was evaluated, while low temperature performance not usually conducted previous studies. Results indicated addition worsens moisture susceptibility resistance, but improves rutting, stiffness properties, fatigue performances, cumulative...