I found a brief from a research project that studied blends of silicone and butyl rubber for Mars applications at https://science.nasa.gov/wp-content/uploads/20

I found a brief from a research project that studied blends of silicone and butyl rubber for Mars applications at https://science.nasa.gov/wp-content/uploads/2023/11/r.anyszka-2023-tech-showcase.pdf?emrc=07f8a3 https://science.nasa.gov/wp-content/uploads/2023/11/r.anyszk... Also a more detailed version https://ris.utwente.nl/ws/portalfiles/portal/459340626/RubberWorld_R.Anyszka.pdf https://ris.utwente.nl/ws/portalfiles/portal/459340626/Rubbe... But this seems to be rubber for gaskets, hoses, tires etc. and not fiber reinforced stuff for construction applications.