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Roadway Joint
3

Roadway Joint

Roadway Joint

(OP)
I'm using a roadway expansion joint at 75' o/c.  Sawcuts are at 15'.  Expansion joints are for summer heat.

The roadway is for a mining project and won't see a lot of traffic, but the environment is 'less than friendly'.

Looking at two systems (both have 1" joint):

System 1:
Preformed neoprene with a 2" gap at the surface and 1/2" shoulders for support and nothing below.

System 2:
1" joint with a urethane foam backer rod and 1/2" thick Sika 1c SL recessed 1/2" below the roadway.

Any comments on which should be used, or is there a better joint.

RE: Roadway Joint

dik...if large temperature swings, I would shy away from the pre-formed joint filler.  In my experience, they tend to work their way out.  With little traffic, this might be a worse problem because they don't get pushed back down.
 

RE: Roadway Joint

(OP)
Thanks, gentlemen... will run with the hot applied.  What is typically used as a backer rod/bar?

Dik

RE: Roadway Joint

dik...agree with cvg's recommendation of hot poured sealant. Provided the material has a record of service for application in the frozen north!!

RE: Roadway Joint

(OP)
Thanks, BB... good link.

Ron:
I picked up a bit of info from Wisconson and Michigan DOT's and it was based on this that I was going to use the preformed stuff... it works well, apparently.  I've got a call in to see about using an adhesive for securing the neoprene gasket.  Work for the joint can wait until spring when it warms up a bit.  The joint can be flushed/blown out.

The hot applied seems to be more common and I will check with local DOT's to see what is more common and why.  It's also less costly to use...

Dik

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