Concrete Paving Question

[buckrub]

We are paving a truck lot. Trucks are parking on an 8" thick steel mesh reinforced concrete slab with integral curb. The width of the concrete parking area is 32 ft. from the face of curb. The contractor has proposed the following construction sequence, instead of pouring the concrete in a single pour:

"We are now preparing to install this work and we would like to separately form and pour the integral curb sections of the 8” paving up to the first control joint (8’ from backside of curb) in lieu of forming and pouring the entire 32’ wide section.
We propose to place the reinforcing mesh, continuous through this joint into the adjacent slab sandwiched between two, 2x4 form boards. The adjacent slab would be poured separately using our screed machine. Each edges would be tooled and the joint subsequently filled with joint sealant."


Does anyone see a problem with this? My first concern was the joint between the two pours where the steel would be subjected to potential corrosion. However, this method can't be much different than road paving where there is a similar joint following each day of construction.

Any input either way is welcomed.

 

[cvg]

I take it the mesh is for shrinkage crack control. I don't believe it needs to be continuous through the joints. Holding it back 2 inches from the edge would prevent corrosion. However, I might be concerned with differential slab settlement. You may want dowels between the slabs if your truck loads are heavy enough.

 

[GeoPaveTraffic]

Don't run the mesh through the joints. However you will need to install smooth dowel bars through the cold joints. Given that you are using 8-inch pavement, you should be using 5/8" to 3/4" dowel bars. Also the bars should be epoxy coated.

 

[jartgo]

You're calling it a 32' wide section...what's the length? You certainly don't want to pour a large "patio," you need joints.

I'm not a concrete expert, but you typically wouldn't span more than 20 feet in a paving lane...I think ACI recommends 18 feet or maybe even less, I don't remember.

I concur with stopping the mesh short of the joints and adding dowels for load carrying through the joint. I've had pretty good luck with speed dowels (a trade name).