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THOUGHT LEADERSHIP IN HYDROPOWER & DAMS: A CASE STUDY
No full textThe presented paper is aimed to the analysis of a case study in the hydroelectric sector, evaluating the achievement of “Thought Leadership”
Geomechanical Challenges and Engineering Solutions for Tunnel Stability in the Himalayas: A Case Study Approach
Get PDFThe Himalayan region, characterized by complex geological formations and high tectonic activity, presents significant challenges for tunnel construction. This paper examines geomechanical issues such as tunnel squeezing, stress-induced instability, and rock bursting, with a focus on hydropower and railway tunnel projects in Nepal and India. Case studies, including the Chameliya Hydroelectric Project, Parbati II Hydroelectric Project, Nilgirikhola Hydroelectric Project, and railway tunnels in the Garhwal Himalaya, highlight the impact of weak, schistose rock masses and extreme overburden pressures. Various engineering methodologies, including empirical, semianalytical, analytical, and numerical modeling approaches, are discussed to assess stress states and deformation behavior. The study underscores the need for adaptive excavation techniques, such as the New Austrian Tunneling Method (NATM) and rock mass classification systems, to ensure tunnel stability. By integrating probabilistic analysis and advanced support systems, this research contributes to optimizing underground construction strategies in geologically challenging terrains
CHAPTER 23: REVALUATION OF RECYCLED REINFORCEMENT FIBERS THROUGH TEXTILE TECHNOLOGIES
No full textThis chapter addresses the environmental and energy challenges posed by the increasing production of composite materials, particularly those reinforced with carbon and glass fibres. Current recycling technologies focused on fibre recovery, such as thermal and chemical methods, now enable the production of fibres suitable for reintegration into the value chain. The chapter details adapted textile technologies for processing these recycled fibres, covering methods from non-woven fabric production to the newest manufacturing technology of yarns and unidirectional tapes. Technologies such as carding and yarn formation are analyzed, highlighting the need for hybridization with virgin materials to enhance the mechanical properties of the final products. While current advances do not yet match the performance of virgin materials, ongoing research continues to optimize these processes, paving the way for the industrialization of more sustainable composites, with applications ranging from lightweight structures to sectors with higher mechanical requirements
CHAPTER 18: REACTIVE THERMOPLASTIC RESINS
No full textOne of the main challenges currently faced by the composite materials sector is to ensure its sustainability, both at the level of the raw materials used, the production means necessary for its transformation, as well as its management and treatment. at the end of its useful life.
Especially critical is the situation of thermostable composite materials, widely used in structural applications due to their excellent performance/weight ratio. There are different fields of research, oriented towards the search for more sustainable alternatives for these matrices so that these high mechanical performances continue to be guaranteed and that they can be transformed by conventional manufacturing processes.
Reactive thermoplastic resins are a sustainable alternative for the manufacture of recyclable, weldable and processable structural composite components by conventional manufacturing technologies (Infusion, RTM. Pultrusion, Fillament Winding
EL ACCESO A LA VIVIENDA ES UNA QUIMERA
Get PDFPurpose of the Paper
Recently, almost everyone, or a good part of the political, economic and social agents and even intellectuals, and various public demonstrations, there is a unanimous clamour about the convenience of providing the population with a stock of social and affordable housing, particularly for young people, and for the most economically disadvantaged.
The objective of the Paper is to get down to work to achieve an «Investment Plan for an Inclusive Europe. Investment Plan of the European Social Housing Pact» that guarantees a decent life for all citizens: access to housing in affordable conditions. And to do so, it is necessary to replicate the Investment «Plan for a Sustainable Europe. Investment Plan of the European Green Pact», so that just as there is the «European green bond» or «BVEu» there is also the «European housing bond» or «BVEu".
The Peper's aim is that all the stakeholders involved can achieve, during the new mandate of the European Parliament, together with the Council, the adoption of a REGULATION (EU) that replicates that of 2023/2631 of 30.11.2023 on "European green bonds", in this case on "European Social Housing Bonds".
And to achieve this, fortunately, at the time of writing the Communication there is a great ace up its sleeve: for the first time in the European Commission there is a Commissioner for Housing, which can be a great 'trump card' - a good card as in the card game - here in a figurative sense - to make it possible to establish a Regulation of the EU, the European Parliament and the Council, for the issuance of "European Social Housing Bonds".
In July 2023, the President of the new European Commission, Ursula von der Leyen, acknowledged before the European Parliament the magnitude of the problem, stating that: "People are struggling to find affordable homes." Following these statements, at the end of 2023, the Commission proposed the first European Plan for Affordable Housing, including creating a dedicated Commissioner to address this challenge.
The new European Commission (2024-2029) has taken a promising step by appointing the Danish Dan Jørgensen as its first Commissioner for Housing and Energy. Although under the principle of subsidiarity, the Union has no direct authority over national housing policy, the Commission and the Commissioner have the tools to play a decisive role in driving a way out of the housing crisis that restores its fundamental role as a cornerstone of social inclusion and an integral part of the European fabric.
The Liège Declaration, signed by EU ministers in March 2024, offers a clear way forward. It recognises housing as a key pillar against poverty and social exclusion and calls for substantial public investment in social and affordable housing.
Dan Jørgensen will be tasked with developing the European Plan for Affordable Housing, proposed by the Commission by the end of 2023, which should provide technical assistance to Member States on investment. In parallel, he will be tasked with working with the European Investment Bank (EIB) to create a pan-European platform for investment in affordable and sustainable housing. The platform aims to attract public and private investment to increase the supply of affordable housing and address investment gaps in the construction sector. Brussels has also proposed doubling cohesion fund investments to construct affordable housing
El Mecanismo Europeo de Ajuste al Carbono en Frontera (CBAM): impactos y propuestas de mejora
No full textEl Mecanismo de Ajuste al Carbono en Frontera (CBAM), recientemente aprobado por la Comisión Europea, pretende gravar los productos importados en función de sus emisiones, sometiéndolos al mismo precio que los bienes europeos que ya pagan por ellas en un mercado interno de derechos de CO2. Sin embargo, su diseño actual presenta varios retos a gestionar, entre otros el efecto sobre la competitividad industrial o el aumento de costes de los productos domésticos. En este trabajo evaluamos el diseño del CBAM, presentamos una estimación del impacto del mecanismo en los costes industriales y en los hogares españoles, y finalizamos con algunas propuestas de mejor
