Concrete joint technology
Concrete joint technology
(OP)
I have been out of the highway/flatwork pavement industry for a few years. I am trying to help a long time client evaluate concrete versus asphalt pavement for a several large projects coming up. They are in the trucking business with terminals.
We are getting pros and cons from both industries.
The concrete guys say they have joint deterioration problems resolved wiith special inserts, saw cutting joints, etc. and can eliminate steel reinforcement with higher strength concrete mixes.
The asphalt guys save they can resolve swaling and rutting with several new methods.
Anyone with real life experience or good studies.
We are getting pros and cons from both industries.
The concrete guys say they have joint deterioration problems resolved wiith special inserts, saw cutting joints, etc. and can eliminate steel reinforcement with higher strength concrete mixes.
The asphalt guys save they can resolve swaling and rutting with several new methods.
Anyone with real life experience or good studies.





RE: Concrete joint technology
The higher strength of concrete is somewhat irrelevant. Use 4000-5000 psi concrete and don't worry about it.
As for the transition between asphalt and concrete, place the concrete first and slope the face of the concrete toward the asphalt by about 15 to 20 degrees off vertical. This will help keep the interface joint sealed, because when traffic goes across the joint, it pushes the asphalt against the concrete, keeping the seal intact.
RE: Concrete joint technology
In thirty years, I've never seen your concrete/asphalt joint solution before in plan or practice, but it's so obviously a good idea I don't know why it isn't always done. I'm going to put that one in my personal bag of tricks. Thanks!
RE: Concrete joint technology
RE: Concrete joint technology
How did you arrive at the 15 - 20 degrees? Have you experimented with a steeper angle?
RE: Concrete joint technology
RE: Concrete joint technology
Thaks again
RE: Concrete joint technology
RE: Concrete joint technology