Masa DunDun | Construction and DIY projects | Forums

It's in Portuguese so I can only translate the cognatives from Spanish but it's an epoxy instead of the standard troweling grout. Built for easy application and to resist sheer/tension/torsion loads. So strong that the bricks break before the seam does. I'm guessing you're still suppose to run some sort of grout to fill in the gaps between the blocks or some form of surface covering when you're done. Cool idea.

They don't say what material the bricks are but they look like the same ones that I came across in Bolivia that were clay (same material as those red Spanish clay tile roofs). Other things I picked up listening to it for a third time: full strength in 3 days, 1.5 kilos is enough to do a cubic meter of blocks, and somehow or other it's eco friendly.