Building walls in a stable, sliding joint against the slab or not?

[niblom]

I will be building new interior walls in the stable (against existing outer wooden walls that are in poor condition). The idea is to transfer the load from the old walls to the new interior walls. Now, I am going to build an 8m long wall of 19cm leca. Interior walls will also be erected (they will be stall walls, 15cm leca).

Since these walls will not go all the way around the house but a little here and there, I wonder if one should have a slip joint under the walls or if there should be mortar under the walls.

The base is concrete directly on the ground (existing floor).

 

[jawen]

I would have built without a slip joint/slip layer, however, I would probably have used rebar (drilled down 10mm reinforcing bars 3-4 cm into the slab and 3-4 cm up into the first course of Leca), which would further stabilize the wall if the horses kick it sometime. The capillary action on Leca/Lightweight aggregates means it can only absorb moisture up to about 11 cm in the first course of Leca, and that's said when the stone is standing in water.

The use of a slip layer in connection with the masonry of Leca is widely debated, and those advocating for it do not have much logical argument to present with normal masonry using Leca.

Best regards, jawen

 

[niblom]

It was stated in instructions from Finja on how it should be bricked. But I thought it was strange, especially in this application. I have to consider whether I should dobba or not.