Spall Repair in Vertical Curbs 1

[BuckeyeDev]

One of our contractors installed vertical concrete curbs in our development. Upon inspection it was discovered there were small cracks in the curbs. These cracks are more surface cracking and pose no loss of structural integrity. The cracking was due to the concrete finisher not putting the expansion joints in during construction. This has been corrected. I am looking for a product that will fill these cracks. Hopefully something with a proven durability rating. DAP has a concrete patcher but they have not completed durability testing. Anything else out there that would do a better job? Thanks for your help

 

[jheidt2543]

There are a number of concrete patching materials that might be used. The main question to answer is; are you patching to maintain structural integrety or for aesthetic reasons? The cost differenc can be significant.

I would contact your local reps for Sika, Master Builders and Chemrex Companies and have them look at the problem and suggest repair options.

 

[BuckeyeDev]

Thanks for the reply. It is more for aesthetic reasons. I have a call into Sika. Couple of contractors gave me the Sikaflex 1-a product name for this job.

 

[jheidt2543]

If aesthetics is the concern, take a look at using Thoroseal, a product by Degussa Building Systems. Take a look at their website,

http://www.DegussaBuildingSystems.com

for product data and installation instructions.

We used Thoroseal on concrete foundation walls with Acryl 60 and sand as a finish coating that looks like a hand rubbed finish, but is quicker to install with a brush and less expensive. The result is a consistant looking sand finish.

Just another thought!

 

[Ron]

BuckeyeDev...anything you put ON the cracks will likely come back off with time. If you want to repair the cracks, you should inject epoxy into them as it is likely they are not wide cracks and won't accept flowable epoxy.

The cracks were caused by shrinkage and the contractor did not sawcut appropriate CONTROL joints in the curbs at the proper time. Expansion joints are generally not needed except about every 200 feet.

I agree with jheidt2543 that Sika has some good products that will work for this.