Sub- and supercritical hydrothermal route for the synthesis of xonotlite nanofibers for application to green concrete materials

Despite a wide range of applications, naturally occurring minerals suffer from some limitations for industrial use. Consequently, many research efforts have been conducted to develop fast, optimized, and sustainable methodology produce synthetic minerals. In the case calcium silicate hydrates (CSH), hydrothermal flow approach allows mimic environment at high temperature pressure natural geological processes synthesis xonotlite under sub- supercritical conditions in only few seconds. The ultra-fast, flexible, effective production particles reported this work expands its use towards requirements, especially applications cement-based materials. context, CSH nanominerals can be used impart new functionality or accelerate hydration process cement developing green This study sheds light on acceleration effect crystalline seed, measured using isothermal calorimetry synchrotron radiation based X-ray microtomography, as means lowering content without compromising performance paste. • Xonotlite was produced by synthesis. effective, scalable method shorten time. Operating parameters, T, p t, control nature properties mineral. materials’ applications. fibers an autocatalytic seeding effect.