Isolation Joint b't'n Asphalt and Concrete

[dik]

Is there a product similar to flexcell that is placed between a concrete structure and new asphalt pavement?

Dik

 

[SlideRuleEra]

Dik - For the uses I'm familiar with asphalt pavement is placed right up to a concrete structure - nothing between them. This is in a warm climate where the asphalt remains reasonably flexible all year. Maybe different in colder regions.

http://www.SlideRuleEra.net

http://www.VacuumTubeEra.net

 

[hokie66]

I agree with SRE that the flexible material between concrete and asphalt is normally....asphalt.

 

[dik]

Thanks... its the cold climate I was concerned about.

Dik

 

[MotorCity]

How about some sort of bond break like felt paper?

 

[dik]

I went out last night to see what the city does with asphalt to concrete curb and they don't do anything. I think I will avoid a bond breaker and make sure the curb has a tack coat below the asphalt layer (I should have left the typo... I was using a tack cat.)

Dik

 

[ACtrafficengr]

Attack cat? Like the time I had to take our Sammy to the vet?

NYSDOT is specifying hot melt asphalt joint adhesive at top course cold joints, including curb. Upstate NY certainly counts as cold climate.

 

[DDBPE]

Typically we just tack coat for asphalt to concrete interface (curb and gutter, concrete pads, etc.).
Unless for airports, they require a routed joint (after paving) with joint sealer between the two.

 

[dik]

Thanks gentlemen...

Dik

 

[Ron]

dik...just prime the concrete before asphalt placement. If you transition from asphalt to concrete in the traffic lane slope the concrete at 15-20 degrees off vertical so when traffic rolls over it pushes the asphalt against the concrete

 

[dik]

Thanks, Ron... that's what I did... not usually involved with asphalt... but had to repair some roadway that was cut out for access to a concrete wall. Used 4" HL3 over 12" Cmpt Gran 'A'. Should be good for small trucks and passenger vehicles.

Dik