ESR12 Project

OPTIMIZATION OF BITUMINOUS SUB-BALLAST IN RAILWAYS INFRASTRUCTURES UNDER SUSTAINABILITY CRITERIA

ESR12: Luca Pirozzolo


My name is Luca, I am graduate in Civil Engineering (Road Design and Transportation Systems Engineering), at the University of Roma Tre. I’m the Early Stage Researcher 12 in the SUP&R ITN project. I am from Italy but I am working in Spain, in LabIC research group in Universidad de Granada.

My background is characterized by the meticulous study of engineering problems and the practical experience acquired after months of experimenting research at the University of Granada. My skills range from technical knowledge of computer with the following software: Office, Autocad, Photoshop, Sap2000, operating systems etc., to the knowledge of the use of instruments and laboratory equipment.

As a good enthusiastic tech I like to learn how to use new and more complex software and instrumentations.

PARTNERS INVOLVED


lab  nott ugr

RESEARCH LINES


In recent years, the railway sector has focused on more sustainable constructive techniques and more durable solutions such as the inclusion of bituminous sub-ballast in order to reduce track degradation whilst improving its quality. The use of bituminous layer in railways tracks is regarded as an appropriate solution for improving the strength of the section. In comparison with traditional granular sub-ballast, these materials allow for both an increase in bearing capacity and greater protection of the substructure. However, the fact that these materials are manufactured at a temperature of 160°C means that their application can incur significant construction costs, along with a rise in pollution and energy consumption. In this regard, there is a need for the use of new techniques to produce asphalt, such as the reuse of waste materials or manufacturing with low-temperature technology, both of which allow for lower energy expenditure without changing its in-service mechanical performance, as well as reducing the general costs of this layer. In this context, this project therefore aims to, on the one hand, study the possibility of using sustainable bituminous sub-ballast manufactured from waste materials such as crumb rubber, which is recycled rubber produced from scrap tires and reclaimed asphalt pavement (RAP) from road pavement at the end of their service life. A further aim is to study the possibility of using WMA manufactured at lower temperatures, as bituminous sub-ballast. To this end, this thesis is focused on evaluating the mechanical behaviour of bituminous materials (under both routine and adverse temperatures) in comparison with that presented by conventional sub-ballast. In particular, performance is examined with respect to the main requirements that need to be met by these materials (resistance to plastic and punching deformations, bearing capacity, stress dissipation, cracking resistance, and waterproof properties) for their use in railway tracks.

The results demonstrated that all the sustainable solutions studied, offer a suitable performance as sub-ballast for railways tracks from a mechanical behaviour point of view. In addition, they can offer advantages such as reducing greenhouse emissions, fuel consumption and waste as in the case of HWMA 100% RAP. furthermore, the use of rubberized bituminous mixtures (DRA and WRA) make more durable sub-ballast layer, at the same time that allow for waste recovery. Finally, the use of WMA, despite its performances was slightly lower respect the others solutions studied, achieved acceptable results for its use as a sub-ballast layer. Moreover, it is a solution that guarantees to reduce pollution and energy consumption thanks to its ability to reduce mixing and compaction temperatures.

The main aim of the present project is is the optimization of bituminous sub-ballast in railway infrastructure under sustainability criteria through the reuse of waste, reducing energy consumption and gas emissions. Therefore, the purpose is to obtain a new solution that is economically and environmentally more competitive and with an adequate mechanical behaviour that is at least equivalent to that presented by the granular configuration.

My work consists of three different phases.

CONTACT

lucap@ugr.es

lucapirozzolo@gmail.com

Follow me:  @LucaPirozzolo

 

PUBLICATIONS

Title: “Advanced characterization of bituminous sub-ballast for its application in railway tracks: the influence of temperature”, 2015. Journal: Construction & Building Materials.

Title: “A study into the mechanical performance of different configurations for the railway track section: a laboratory approach”, 2016.  Journal : Engineering Structures.

Title: “Evaluation of bituminous sub-ballast manufactured at low temperatures as an alternative for the construction of more sustainable railway structures.”, 2017.  Journal : Materiales de Construcción. 

X International Conference on the Bearing Capacity of Roads, Railways and Airfields
28 – 30 June 2017 – Athens – Greece
Title : “ Effect of stiffness and bearing capacity of railway components on track behaviour: a laboratory approach for design optimization of railway tracks“.
Type of participation: Publication.

X Jornadas Internacionales “Ingeniería para Alta Velocidad”
Fundación Caminos de Hierro – 15, 16, 17 June 2016 – Córdoba – Spain
Title : “Análisis de la respuesta mecánica de subbalasto bituminoso ante sus principales formas de fallo para su aplicación en vías de alta velocidad“.
Type of participation: Publication.

 

X Jornadas Internacionales “Ingeniería para Alta Velocidad”
Fundación Caminos de Hierro – 15, 16, 17 June 2016 – Córdoba – Spain
Title: “Desarrollo de una técnica alternativa para reducir el mantenimiento de vías ferroviarias“
Type of participation: Publication.

11th World Congress on Railway Research
29/05/2016 – 02/06/2016 – Milano – Italia
Title: “Study into the viability of using Warm Mix Asphalt as bituminous subballast in railway tracks”
Type of participation: Publication.

11th World Congress on Railway Research
29/05/2016 – 02/06/2016 – Milan – Italy
Title: “ Stone-Rubber Blowing: a New Maintenance Task for Railway Tracks”
Type of participation: Publication.

XI Jornada Nacional de ASEFMA
11, 12 May 2016 – Madrid – Spain
Title: “Desarrollo de sub-balasto bituminoso a partir de mezclas a baja temperatura para su utilización en infraestructuras ferroviarias”
Type of participation: Publication.

The Third International Conference on Railway Technology
5-8 Aprile 2016 – Cagliari – Italy
Title: “ Stone-Rubber Blowing: a New Maintenance Task for Railway Tracks”
Type of participation: Publication.

The Third International Conference on Railway Technology
5-8 April 2016 – Cagliari – Italy
Title: “A Study for the Viability of using Warm Mix Asphalt as Bituminous Sub-Ballast for Railway Track”.
Type of participation: Publication.

Transportation Research Board TRB
94th Annual Meeting. 11-15 January 2015 – Washington, D.C. – United States
Title: “Reducing Railway Maintenance: Effectiveness of Combining Stoneblowing Technique with Rubber Elements from Waste”
Type of participation: Publication.

Testing and Characterization of Sustainable & Innovative Bituminous Materials
8th International RILEM Symposium. 7-8-9 Ottobre 2015 – Ancona – Italia
Title: “Optimization of bituminous subballast in railways infrastructures under sustainability criteria”
Type of participation: Poster.

Pre-Conference Workshop on “Testing and Characterization of Sustainable & Innovative Bituminous Materials”
8th International RILEM Symposium. 6 October 2015 – Ancona – Italy
Title: “Optimization of bituminous subballast in railways infrastructures under sustainability criteria”
Type of participation: Oral communication.

X Jornada Nacional de ASEFMA
02/07/2015 – Zaragoza – Spain
Title: “Caracterización avanzada de la respuesta mecánica de subbalasto bituminoso para su utilización en infraestructuras ferroviarias“
Type of participation: Publication.

IX Jornadas Internacionales “Ingeniería para Alta Velocidad”
Fundación Caminos de Hierro – 17, 18, 19 June 2015 – Córdoba – Spain
Title: “Análisis del comportamiento mecánico de neumáticos usados para su empleo como elementos elásticos en vías de alta velocidad. “
Type of participation: Publication.