Estudo da eficiência da tinta intumescente na proteção do concreto em situações de incêndio

Abstract

Fire safety and panic prevention constitute a relatively recent topic in the national context, which, on a global scale, tends to gain greater relevance only after the occurrence of major tragedies. In this scenario, the adoption of technically and economically viable solutions becomes essential to ensure the safe evacuation of the population in fire situations, without compromising the feasibility of projects. Among these solutions, the use of intumescent paints stands out, as they act as thermal protection by preventing the full transfer of heat between environments, contributing to the reduction of temperature in areas not directly exposed to fire. This study aims to evaluate the efficiency of intumescent paint in protecting concrete elements subjected to high temperatures. For this purpose, concrete specimens, with and without intumescent coating, were subjected to different heating levels. After cooling, compressive strength tests were carried out, followed by chemical analysis using X-ray Fluorescence, in order to identify possible changes in the composition of the materials. The results showed that intumescent paint significantly contributes to reducing heat transfer, promoting greater preservation of concrete properties and increasing its resistance under fire conditions. Furthermore, it was verified that the use of this coating favors the creation of safer evacuation routes.