Concrete Question

[luscsmith]

I am having a concrete drive poured and would like to know if I can substitute rebar and/or wire with thicker higher psi concrete with fiber.

Thanks, Scott

 

[crusty 1]

I am having a concrete drive poured and would like to know if I can substitute rebar and/or wire with thicker higher psi concrete with fiber.

Thanks, Scott

Don,t know where you live but will tell you here in N.MN. the fiber mesh doesn,t hold up as well as the wire mesh.And I was told by the cement guy,s that sun light isn,t good for the fiber.I,v had both poured and will stick with wire or rebar.Dave

 

[s78wingrider]

Agree with Dave, no matter where you are, for a drive

 

[Egon]

Scott, supposedly rebar or wire are placed in tension areas of the concrete pour as cement is considered to have zero strength in tension.

On your question I'm so many years out of date I'll not hazard a guess.

 

[oldnslo]

I am having a concrete drive poured and would like to know if I can substitute rebar and/or wire with thicker higher psi concrete with fiber.

Thanks, Scott

Scott,
I talked to a friend of mine that does concrete work for a living. His reply was that the fibre works fairly well inside of building but does not last as well when exposed to the elements.

I have not seen them but he said there is a company or companies that are experimenting with plastic or fibre rebar. The reason being it would be imune to raod salt and in theory would last longer.

For today I would use rebar and or heavy mesh wire with good concrete mix. aound here the difference in price from 5 bag to 6 bag mix is $6 / yard.

Roy

 

[Hillfarmer]

Utilizing a higher strength concrete will improve the compressive strength of the concrete but will not appreciably change the tensile strength. A 2*0=0 sort of thing. The steel reinforcing takes the tension up in the concrete to prevent differintial settling and to deal with some internal stesses. I tried fiber instead of rebar for a sidewalk one time and it improved the strenght of the concrete but did not prevent the individual sections from settling at different rates causing the edge of one section to be slightly higher than the edge of the adjoining section. To sum up I would recommend utilizing the rebar/welded wire.

 

[zzvyb6]

Unless the steel is pre-stressed (Pulled and held in tension while the cement hardens), the only thing the steel does is keep the broken concrete sections reasonably together. I've used the higher strength cement mixes without steel at the same thickness and been surprized at how crack free its been. But, these were small sections which replaced old broken ones, and the setlement of the underlayment probably had a lot to do with it, too.

 

[Duffster]

Unless the steel is pre-stressed (Pulled and held in tension while the cement hardens), the only thing the steel does is keep the broken concrete sections reasonably together.

Ummmm.....No.

If that was the case parking ramps would fall down under their own weight.

 

[luscsmith]

I am planning to pour 5" of 4,000 psi, will that be good for a drive?

Scott

 

[radman1]

I am planning to pour 5" of 4,000 psi, will that be good for a drive?

Scott

That is what I used on my driveway last fall. 14' wide, wire mesh and used 2 rows of rebar near the outside edges. 14' is probably wider than needed but nice for larger trailers.