Ph.D. José Carlos Rubio modified the structure of cement in order to help it absorb solar energy and return it to the environment as light. Rubio took note of the main issue of cement being that its opaque body doesn't allow light to pierce it's interior.
He got around this flaw by eliminating the crystals that are produced during the dissolving phase when it starts to become gel and making it become gel completely, thus allowing it to return solar energy as light. The researcher explained how the cement has such a long lifespan:
Rubio detailed that most fluorescent materials are made out of plastic and have an average of three years of life because they decay over time with exposure to UV rays; this new cement is sun resistant and has an estimated lifespan of 100 years.