STEAM (Science, Technology, Engineering, Arts and Mathematics) professions play a crucial role in transforming 21st-century society, as they contribute to developing new technologies that support the achievement of the Sustainable Development Goals (SDGs). Aligning engineering education with sustainable development requires raising awareness among students, fostering commitment among future generations of engineers, and promoting technical vocations. In this paper, an educational experience designed with these objectives is presented, in which more than 130 students from five undergraduate degrees in engineering and architecture at the Higher Polytechnic School of Zamora (HPSZ) of the University of Salamanca actively participated. To carry out the project, an online course was designed to train all participating students on general aspects of the 2030 Agenda, and research works were proposed in the ten involved degree subjects. The assessment of students' prior knowledge and learning regarding the 2030 Agenda was conducted through an objective multiple-choice pre-test and post-test. Additionally, their satisfaction with this educational experience was assessed through a questionnaire. The results revealed a considerable improvement in the students' knowledge of the general contents of sustainable development, especially after participating in classroom debate sessions. The initial objective test showed a low average score, indicating the lack of knowledge about the 2030 Agenda and the SDGs among engineering students. However, the final objective test revealed a significant improvement of 3 points out of 10. Regarding the research works, out of a total of 91 students, 53 papers addressing complex issues related to sustainable development and current engineering solutions were presented. This approach facilitated collaborative learning and the celebration of World Engineering Day at the HPSZ. The results of the satisfaction survey demonstrated that the experience was positive for both students and faculty Furthermore, its media impact was essential for increasing engineering vocations' visibility and social recognition.

Water damage is one of the main causes of road deterioration during its lifespan, leading to a decrease in the structural and functional qualities of the road surface. Moreover, the management and disposal of polyethylene terephthalate (PET) bottles at the end of their lifecycle are becoming increasingly complex challenges. Hence, this study investigates the feasibility of incorporating crushed PET bottles into the production of asphalt mixtures, considering different PET quantities (6%, 10%, 14%, 18%, and 22%) and two incorporation processes in the mixture design (dry process and modified dry process). PET-modified mixtures‘ volumetric properties, Marshall parameters, and moisture susceptibility characteristics were evaluated and compared with PET-free asphalt mixtures. The results indicated that PET content significantly influences the properties being assessed, and the modified dry process yields a higher resistance to moisture susceptibility. Finally, the obtained TSR (tensile strength ratio) results based on European standards are compared with those obtained using American standards, in an aim to comprehend and assess the testing methods, result reliability, and applicability.

Water damage is one of the main causes of roads’ deterioration throughout their service life. This effect harms the adhesion and cohesion parameters of the asphalt mix, which leads to a decrease in the structural and functional characteristics of the road surface. This research focuses on studying the water susceptibility of hot mix asphalt mixtures using three different procedures: (1) UNE-EN 12697-12, (2) ASTM D4867, and (3) AASHTO T-283. The tests are carried out on reference mixtures and mixtures modified with polyethylene terephthalate (PET) particles as an additive. The results indicate that the incorporation of 6% PET allows the limits established by the UNE-EN 12697-12 standards to be exceeded, reaching 86% of the tensile strength ratio (TSR). However, for the ASTM D4867 and AASHTO T-283 standards, the results obtained concerning the water susceptibility of the bituminous mixtures were not as satisfactory because the established minimum limits were not reached (< 75%), which indicates that the procedure applied in a test can significantly modify the results of a later application.

Urban regeneration is perceived as an efficient solution addressing multiple problems in today’s cities, offering answers to the social, economic, physical, and environmental challenges faced by consolidated fabrics. This paper utilizes the assessment tool developed in the Urban Regeneration Strategy of Castilla and León to conduct a comparative analysis of proposals formulated since 2014 in neighborhoods built after the Spanish Civil War in this region. The aim is to validate the effectiveness of this methodology to establish the quality and sustainability of these initiatives and to identify the strengths and weaknesses of the cases analyzed. The results obtained endorse the operability of this evaluation process since it makes it possible to assess the scope of the planned measures at an early stage. This makes it possible to introduce improvements during the implementation phase or in future interventions, which will have a positive impact on their outcome. In any case, it is necessary to complement this study with analyses at later stages in order to establish an overall diagnosis of the real relevance of these operations.

The article claims the important work of the municipal administration in the urban renewal begun in Zamora at the end of the 19th century, after the lethargy in which it had been immersed since the Middle Ages. In this regard, the alignment of the main roads of the medieval city was essential to achieve the functional adaptation of space to modern circulatory requirements, using the new urbanistic mechanisms granted by state legislation. The early intervention on Renova Street marked a turning point in the capital revitalization process. Its strategic location, at the confluence of the Plaza Mayor and the main roads of the second precinct, allowed the connection of the urban center with the new communication and transport infrastructures located outside the walls, favoring the recovery of the citizen activity and giving rise to new interventions in the urban location.