What to use to fill drill holes in concrete?

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Hi all,

The outer walls of my house are concrete, and one particular wall in one of the bedrooms has accumulated a fair amount of drill holes over the years, mainly from putting up battening to create a false wall for hiding cables as well as a TV bracket and a shelf for two Technics turntables and a mixer. The holes for the latter were quite deep (100mm).

What would be the best thing to use to fill them in? Something epoxy based maybe?

Any suggestions welcome.
 
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If you really think they should be filled in, consider using resin in tubes that's used to secure bolts in concrete or whatever.......economical, and applied by using a mastic gun. The constituents mix courtesy of a special nozzle.
Please note, there are different sizes so choose one that fits your gun!
John :)
 
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more economically, you can use sand and cement mortar.

wet the hole thoroughly first or it will suck the water out of the mix and it will be too stiff to push in (and will not cure strong)

ram it in well but leave half an inch or less below the surface. fill that the next day and the final fill will not shrink much

if you remember to mist it for a couple of days that will keep it damp and it will cure better
 
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... and a slight cheat - gunnable mortar:
Very simple to use and decent looking results. It can be quite stiff to use, so it's best to use with a good quality gun.
 

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