A revolutionary heritage preservation technology known as carbon-mineralization is being deployed for the first time at the site of Chan Chan in Peru. The ancient Chimu capital, built entirely of adobe, has faced increasing threats from heavy rains and humidity caused by intensifying El Niño cycles. The new treatment involves spraying a bio-compatible solution that reacts with atmospheric CO2 to form a microscopic, breathable mineral shield over the fragile mud-brick walls.
Unlike traditional sealants, this technology does not trap moisture inside the structure, which previously led to internal crumbling. Structural engineers at the site report that the treatment has increased the surface hardness of the adobe by 40% without altering its aesthetic appearance. This innovation is being hailed as a potential 'lifeline' for earth-built heritage sites across the globe that are vulnerable to climate-driven weather extremes.