Road planings for filling holes

[woodworm]

We have a concrete roadway with 3 holes about 6' across and 4" deep in it. We have some fresh road planings to put in them, whats the best way to bind the road planings to the concrete and to stop them coming out?

 

[Lincs Lass]

The edges of the concrete will keep breaking away ,planings wont stop in as the holes will get water in and everytime something goes over ,they will swill out ,,be better mixing a few barrow full of strong concrete up and making a solid job of it

 

[Pan mixer]

If they are the right kind of planings (off an old road) then a splash of diesel will do it, however the advice above is good.

 

[Doing it for the kids]

Concrete every time. Plannings just move and look a mess after a while and make the edges break up - bigger hole!

 

[Lincsman]

The best way would be cut the section out and re concrete, tidy and last forever.

 

[MOG]

Brother has laid a fair old slab of concrete made simply using road planings and cement. Can't remember if he added sand. Went down nice and is hard as iron.

 

[Doing it for the kids]

Brother has laid a fair old slab of concrete made simply using road planings and cement. Can't remember if he added sand. Went down nice and is hard as iron.

I thought the tar and concrete reacted?

 

[MOG]

That is what I would have thought. Been down about 10 years now and still looks fine. Not a high wear area though so not sure how it would hold up to traffic.

 

[Lincs Lass]

Brother has laid a fair old slab of concrete made simply using road planings and cement. Can't remember if he added sand. Went down nice and is hard as iron.

Surprised the two worked ,I was told never use bituamouse base materials under concrete as there can be a chemical reaction

 

[Lincsman]

Surprised the two worked ,I was told never use bituamouse base materials under concrete as there can be a chemical reaction

Correct, tarmac must be kept away from the rubble crushing heap. possibly very old stuff is ok???

 

[H200GT]

They use cement bound substrate on roads as a cheaper alternative to bituminous road base. They then overlay that with a bituminous binder course and wearing course.