AI Insight
This study investigates the effects of boron oxide (B2O3) and colemanite (2CaO·3B2O3·5H2O) as additives on perlite-based geopolymer lightweight concrete, evaluating aerating behavior, mechanical strength, post-fire performance, and microstructural characteristics. The research demonstrates how boron-containing compounds influence the geopolymerization process and the resulting pore structure, which in turn affects density and compressive strength. Post-fire analysis reveals how these additives alter the thermal stability and residual mechanical properties of the concrete matrix at elevated temperatures.
Why it matters
Geopolymer lightweight concrete with boron-based additives has potential applications in fire-resistant and thermally insulating construction materials, offering an alternative to ordinary Portland cement with a lower carbon footprint. Understanding the role of boron compounds in such systems could contribute to the development of more durable and sustainable building materials for high-temperature environments.