At low temperatures, concrete tends to set unevenly, which can lead to a collapse. A team of engineers from RUDN University suggested using infrared light and adding silicon and ash to concrete to solve this issue. The technology can be used for cast-in-situ construction. The results of the study were published in the Fibers journal.
source https://techxplore.com/news/2021-03-technology-high-performance-concrete-winter.html
