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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. [ABSTRACT FROM AUTHOR]

Styrene–butadiene–styrene copolymer (SBS) can be used to improve the mechanical and deformation properties of the binder used in its manufacture. However, the high cost of and variability in processing limit its performance. A secondary modifier to solve these problems is nano- and micromaterials that allow for the generation of unique properties in polymeric systems. Based on this, this study experimented with fly ash micro-filler (μFA) in low proportions as a binder modifier with SBS for use in PA mixes. The FA residue is considered in 3% and 5% dosages on a base binder with 5% SBS. Rheological results show that μFA improves classical, linear viscoelastic (LVE), and progressive damage properties compared with the modified binder. The PA blends with μFA reduce binder runout, resulting in a thicker film, thus showing better abrasion resistance in dry and wet conditions. Samples with μFA increase the post-cracking energy in indirect tension due to higher ductility. However, they decrease the fracture energy due to higher cracking before failure. In addition, μFA manages to decrease the difference between dry and wet ITS. [ABSTRACT FROM AUTHOR]