Astronomy:AstroCrete

From HandWiki
Graphical abstract of AstroCrete concept

AstroCrete is a concrete-like material proposed to be used on Moon or Mars made from regolith and human serum albumin (HSA), a protein from human blood. Scientists demonstrated that such material had compressive strengths as high as 25 MPa, while ordinary concrete had 20–32 MPa. By adding urea (byproduct in urine, sweat, and tears), the resulted material became substantially stronger than ordinary concrete, with 40 MPa of compressive strength.[1][2][3]

As noted by the authors:[2]

Researchers also experimented with synthetic spider silk and bovine serum albumin as regolith binders, noting that these materials could also be produced on Mars after advancements in biomanufacturing technology.[2]

The idea behind AstroCrete is not new, that is acknowledged by authors: "adhesives and binders of biological origin were widely utilized by humanity for millennia before the development of synthetic petroleum-derived adhesives. Tree resins, collagen from hooves, casein from cheese, and animal blood were all used as binders and additives for various applications".[2]

Researchers calculated that a crew of 6 astronauts could produce over 500 kg of AstroCrete over the course of a two-year mission on the surface of Mars.[1] Each astronaut "could produce enough additional habitat space to support another astronaut, potentially allowing the steady expansion of an early Martian colony".[3]

See also

References

  1. 1.0 1.1 "Affordable housing in outer space: Scientists develop cosmic concrete from space dust and astronaut blood". The University of Manchester. https://www.manchester.ac.uk/discover/news/affordable-housing-in-outer-space-scientists-develop-cosmic-concrete-from-space-dust-and-astronaut-blood/. 
  2. 2.0 2.1 2.2 2.3 Roberts, A.D.; Whittall, D.R.; Breitling, R.; Takano, E.; Blaker, J.J.; Hay, S.; Scrutton, N.S. (September 2021). "Blood, sweat, and tears: extraterrestrial regolith biocomposites with in vivo binders". Materials Today Bio 12: 100136. doi:10.1016/j.mtbio.2021.100136. 
  3. 3.0 3.1 Blakemore, Erin (September 18, 2021). "Astronauts’ bodily fluids might help build concrete-type shelters on other planets". Washington Post. https://www.washingtonpost.com/science/astronauts-planets-construction-materials/2021/09/17/543a8390-164a-11ec-a5e5-ceecb895922f_story.html.