> Studies carried out by the Secretariat of Ecology and Environment of Quintana Roo state, Mexico, found that the resistance of the bricks is 75–120 kgf/cm2
That's far below concrete, isn't it?
could just use that.
- The compressive strength of a second-rate brick is 70 kg/cm².
- Common building bricks have a compressive strength of 35 kg/cm²
- The compressive strength of sun-dried brick is between 15 and 25 kg/cm².
Source: https://housing.com/news/compressive-strength-of-bricks-mean...
I'd expect it to be less strong than concrete, so I guess more fair comparisons might be mud bricks, other mud-brick + X formulations, and traditional clay bricks?
edit: but worth noting that the paper you linked does mention that someone else is making "sargacreto" that is 40% sargassum and 60% concrete, though it says there aren't numbers to cite for its strength yet.
[0] https://civilplanets.com/compressive-strength-of-concrete/
[1] https://theconstructor.org/concrete/grades-concrete-strength...
https://www.researchgate.net/publication/236950808_Beyond_th...
https://blogs.agu.org/geospace/2019/03/04/seemingly-dormant-...
Additionaly, if the structures are fairly small, and the walls are properly tied together, that may be enough.