Painéis pir (poliisocianurato) na construção pública de Macapá: análise de desempenho termoacústico e segurança contra incêndio

Abstract

Civil construction for public works in Macapá, located in the rigorous Bioclimatic Zone 8, faces historical challenges of low productivity and energy inefficiency due to the predominant use of conventional masonry. The general objective of this study was to analyze the technical feasibility of implementing Polyisocyanurate (PIR) panels in these buildings, with an emphasis on verifying thermal-acoustic performance and fire safety in light of ABNT NBR 15575. The adopted methodology was applied in nature, with a qualitative approach and descriptive character, based on a bibliographic review and documentary analysis of technical standards and local tender notices from 2024 and 2025. The results confirmed the thermal superiority of the PIR system, which achieved an estimated transmittance of 0.44W/m²K, a value significantly better than the regulatory limit of 2.5 W/m²K. Regarding safety, the thermoset behavior of the material was proven, as it chars without dripping, meeting the reaction-to-fire requirements for escape routes. However, the analysis of public tenders indicated that the main barrier to implementation is administrative, as the notices replicate specifications of artisanal methods and omit industrialized solutions. It is concluded that the PIR system is fully technically feasible, recommending the update of Terms of Reference by public agencies to prioritize performance criteria, ensuring faster and more comfortable construction works