Enhancing heatstroke safety for construction workers: Assessing visibility and contrast of thermochromic pigment

BackgroundHeat-related illness is a significant occupational hazard requiring effective prevention. The World Health Organization emphasizes that reducing a worker's ability to perform tasks due to extreme heat or cold is a "health effect" of climate conditions. This study proposes a novel safety management approach in construction to prevent heatstroke among workers using thermochromic fibers that change color in response to body temperature, enabling the visual detection of rising heat levels.ObjectiveThis study evaluated the visibility and contrast of blue and pink (red spectrum) fibers at different distances. The hypothesis was that workers could help prevent heat-related illnesses by monitoring the color changes in their clothing.MethodsThe study involved visibility and contrast tests of garments dyed with thermochromic pigments, observed at different distances. Data analysis was conducted using ANOVA and regression analysis.ResultsThe findings indicate that while blue fibers initially have higher visibility, their visibility diminishes more rapidly with distance than pink fibers. Owing to psychological associations, pink fiber may be more effective in heat stroke safety management.ConclusionsSelecting appropriate colors for thermochromic fibers enhances their effectiveness as safety indicators. Additionally, empowering workers to monitor each other through visual cues may improve safety outcomes, representing a shift from traditional management methods.