Prior to wetting the concrete you can easily drive rebar into the bags as reinforcement.
Concrete bag retaining wall with rebar.
Once the bags are laid you wet everything down thoroughly with a hose saturating all of the bags.
Once the concrete sets up you can either wait for the paper to biodegrade peel it off or burn it off.
Perforate and tamp bags as thoroughly as possible.
When steel makes contact with concrete a non reactive film develops on the surface of the rebar that helps protect it from corroding.
Step 3 stack the second level of concrete bags on the first level.
Concrete and rebar reinforced steel is manufactured as bars rebar or welded wire mesh.
Concrete bags for a retaining wall saw an article in this old house magazine.
Smooth the top with a trowel.
Place bags wet for 5 days straight and when cured peal off the paper solid wall will be doing around the huge oak tree at edge of back yard then plant lots of giant elephant ears.
Stagger the second level bags over the bags on the first level.
If your wall is over 20 feet long it will add the amount of overlap required.
The deformations in rebar bond to concrete and the strong bond enables loads to be transferred between the two materials.
This calculator assumes that you are using 20 foot long lengths of rebar.
Lay the first level of concrete bags out where the wall will be built up.
See more ideas about retaining wall concrete bags concrete retaining walls.
Calculate the amount of rebar needed for reinforcing a wall.
Mix the fill mortar slightly wetter than what you d use for joints.
Retaining wall of unopened sacks of concrete i built a seawall using 80 sakrete bags many years ago.
For best results drive steel reinforcing rods through each bag to anchor them.
As each tier is laid backfill with tamped in dirt to assure a solid bank.
The concept is fairly straightforward.
Spread additional mortar and lay cap block to finish the wall.
Anchor the bags to the slope with 3 8 rebar.
Stack the bags alternate rows by half a bag just like laying brick or block and drive some 3 rebar down through every 3rd or 4th bag.
Set bags in a running bond pattern with the ends butted together and corners interlocked.