## 4 Discussion
[33] and [PERSON] et al. [53], the consumption condition is not independent and is aligned with the interaction of different social aspects of value. Technical contributions, institutional endorsements, and certifications confer consumer confidence. By 2023, Chile had included the Roads Manual Vol 9 in the compendium of technical requirements for road construction, which encompasses sustainable criteria that repurpose waste materials in alignment with the SDG [54]. In addition, the Ministry of Environment and the Chamber of the Tire Industry of Chile have promoted the circular economy of tires by progressively implementing the Extended Producer Responsibility Law (REP). This legislation contains mechanisms that directly target the collection and recovery of ELT; by 2025, the aim is to achieve 50% collection and 35% recovery of ELTs [17; 18]. Specifically, when assessing the indicators of the case study in the assessment systems, the results (Figure 6) show that the criterion with the lowest long-term contribution is _Social Spending_. Indeed, in the short term, the mixture containing Fityre exhibits a higher contribution, which diminishes in the long term, ultimately aligning with the performance of the other fibers. Due to the redistribution of spending, these results are equivalent to the contribution to direct public spending promoted by the savings from asphalt mixtures [3]. Moreover, in other cases, including ELT components in asphalt mixes has increased the production value of a conventional mix by 40% and can be passed on to the user [6]. However, when considering the externalities that promote the circular economy (reduced landfill waste and improved public health), social expenditure can be favored due to the ecological and economic benefits [21]. Similar behavior occurs with _Media Impact and Awareness, Innovation and Development_, and _Conditions for Use_. The absence of long-term differentiation may be influenced by temporal factors and the technology of the evaluated products, which shape societal value judgments [55]. In the case of the _Conditions for Use_, the lack of confidence in Fityre is demonstrated by the lack of certificates with institutional endorsements and transfer to public knowledge, which confer confidence on its performance in the short term. Nevertheless, the contribution of Fityre stands out over the other fibers when estimating the contribution to the criteria _Revaluation_, _Impact on Health_, and _Public Policy_. In these cases, Figure 6 presents, in the long term, an insurmountable gap in favor of the TfELT-based additive compared to imported ones. This is clarified by the structural constraints of the model interactions, in which the imported fiber production components are virgin and devoid of recycled materials; thus, the imported fibers fail to contribute to waste reduction, gas reduction, or other health-promoting effects, unlike the eco-friendly additive. This result is consistent with the findings of [PERSON] et al. [23], who, by assessing the contribution of TfELT to asphalt mixtures, identify reductions in global warming, acidification, and incineration while also promoting the revaluation of TfELTs compared to other fibers. Furthermore, national legislation encourages the sustainable use and reuse of materials [18]. In this sense, public policies will not be impacted by the use of imported fibers. In all cases in Figure 6, the narrowing of gaps in the long term takes, as a reference, the initial moment of assessment, when the differences are highlighted and in the long term, the situation becomes normalized. Based on stakeholder interests (Table 3), imported additives contribute mainly to _Consumers_ and _Producers of asphalt mix and additives_, both in the short and long term. Similarly, the national additive (Fityre) contributes to the interests of _Recyclers_, _Additive Producers_, and _Regulatory Agencies_ in the same order.