I have made the mistake of casting a new slab next to an existing one without joining them together with rebar. It's taken 12 months plus but the new slab has moved causing a crack in the floor (and new wall) of my shed / workshop.
What can I do to join the slabs together and prevent further movement? Would cutting slots at 90 deg to the joint and epoxying in lengths of rebar work?
I am also getting water ingress through the joint (occasionally we get very high water tables, flash floods stuff) If the rebar idea would work, could I open out the joint with a saw (about 5mmx10mm?) and fill with a Polysulphide joint sealer?
Ignorance is bliss, until you have to deal with the consequences....
The main slab is 2.5m x 5m with 12" deep trench around edges and 4" slab. The new slab is 2.5mx1.5m, tacked onto the end and is a straight 6" thick on clay soil. Loads are single skin thermalite block wall, foot traffic and perhaps a motorbike.
What can I do to join the slabs together and prevent further movement? Would cutting slots at 90 deg to the joint and epoxying in lengths of rebar work?
I am also getting water ingress through the joint (occasionally we get very high water tables, flash floods stuff) If the rebar idea would work, could I open out the joint with a saw (about 5mmx10mm?) and fill with a Polysulphide joint sealer?
Ignorance is bliss, until you have to deal with the consequences....
The main slab is 2.5m x 5m with 12" deep trench around edges and 4" slab. The new slab is 2.5mx1.5m, tacked onto the end and is a straight 6" thick on clay soil. Loads are single skin thermalite block wall, foot traffic and perhaps a motorbike.