concrete cover

huangyhg

concrete cover
hi,
i have a situation where a concrete beam has been poured without the specified cover for reinforcing steel stirrups on one side. i have checked shear and torsion and one leg of the ties would be sufficient. can one consider rendering the beam with a 3:1 sand:concrete mortar to provide the necessary cover?
thanks
it could be ok... small diametre main bars? is bond an issue? and any problem with fire resistance?
dik
render is quite porous, so i dont think it will have any benefit at all.
you should use a concrete repair mortar and bonding agent made specifically for patching spalled concrete. google it.
could you simply paint it with intumescent paint?
jae
i am more concerned about corrosion since the structure is close to the sea. any comment about the render?
thnx
a few examples of products to do it the correct way.
there are placement tolerances for cover and stuff like that.  chapter 4 or 5, i think.  depends on how much you have in the first place.
if you are going to bother fixing it then use a proper product such as the ones mentioned. you generally need a bonding agent too so it sticks properly.
what is the cover?
hi
we have about 15mm right now
i agree with csd's recommendation for a repair-type mortar with a corrosion inhibitor included in the material.