Expansion Joint Maintenance - Concrete & Paving - Contractor Talk

Expansion Joint Maintenance

 
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Old 04-24-2015, 10:35 PM   #1
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Expansion Joint Maintenance


I'm fixing up some control and expansion joints in a driveway and I'd thought I post a thread on how I do it.

I know many of you probably practice this as well, but for any of you guys on the fence using 2 part polyurethanes and bulk guns, you should really give it a try.

Even though 1 part tube or sausages can contain quality materials, 2 part products are superior in many ways...bulk value is cheaper, bulk guns dispense more efficiently, the products generally tool better than any other sealant you've ever used and they're just damn good sealants...Vulkem, Sika and Dymeric/Tremco are some of my favs.

On the downside, these aren't water based products and you don't lick your fingers while you're smearing the goop Zylene cut's it well and cleans the tools when your done and whatever you mix up must generally be used within 4 hrs. +/-.

Regardless, preparation is key,...I've saw cut or razored out the old sealant, pressure washed the surface, patched some minor surface defects and allowed it to dry.

Backer rod is next and you want it installed at a consistent height relevant to your joint design, Use the proper sized rod so you don't damage the product during installation. With closed cell foam, if you perforate the jacketing, It can out gas and cause major bubbling of your finished work. Open cell or soft type won't out gas but it's consistency is different and doesn't give as uniform of joint base.

Anyway, I stock both types and a bunch of sizes because you really don't want to be wasting time on your knees installing this necessary component. Soon as I'm done that, I apply bond breaker tape to prevent 3 side adhesion and give the surfaces a final shot of compressed air or leaf blower.

Over to the mixing drill, I use a 3/4" makita with a paddle on low speed. Add the liquid and mix very well for 10 min.

Load the bulk gun and grab some spatulas, you're ready to roll

I'll be broadcasting silica sand over the tooled sealant which is purely an option to help disguise the joint, you may or may not decide to do this although on windy days with debris flying around, it helps keep the sealant free of airborne hijackers which can make quite a mess of your hard work.

Enough already...here's some pics
Attached Thumbnails
Expansion joint maintenance-dymonic-sealant-006a.jpg   Expansion joint maintenance-dymonic-sealant-008a.jpg   Expansion joint maintenance-img_1658a.jpg   Expansion joint maintenance-img_1660a.jpg   Expansion joint maintenance-img_1663a.jpg  

Expansion joint maintenance-img_1664a.jpg  
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Old 04-24-2015, 10:52 PM   #2
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Re: Expansion Joint Maintenance


some more less rambling...
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Expansion joint maintenance-img_1665a.jpg   Expansion joint maintenance-img_1667a.jpg   Expansion joint maintenance-img_1668a.jpg   Expansion joint maintenance-img_1669a.jpg   Expansion joint maintenance-img_1671a.jpg  

Expansion joint maintenance-img_1686a.jpg  

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Old 04-24-2015, 11:06 PM   #3
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Re: Expansion Joint Maintenance


It's like whip cream, very easy to tool...
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Expansion joint maintenance-img_1672a.jpg   Expansion joint maintenance-img_1673a.jpg   Expansion joint maintenance-img_1674a.jpg   Expansion joint maintenance-img_1676a.jpg   Expansion joint maintenance-img_1678a.jpg  

Expansion joint maintenance-img_1679a.jpg  
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Old 04-24-2015, 11:29 PM   #4
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Re: Expansion Joint Maintenance


Helps guard against water, weeds and high heels, well, maybe high heels

The blasting sand is blending with the older crete quite nicely.
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Expansion joint maintenance-img_1680a.jpg   Expansion joint maintenance-img_1681a.jpg   Expansion joint maintenance-img_1688a.jpg   Expansion joint maintenance-img_1689a.jpg   Expansion joint maintenance-img_1684a.jpg  

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Old 04-25-2015, 08:24 AM   #5
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Re: Expansion Joint Maintenance


And crap......... You had to go and learn me sumthin on a Saturday morn.:-) :-)
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Old 04-25-2015, 08:28 AM   #6
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Re: Expansion Joint Maintenance


I've got a concrete porch that's eight years old and needs something done with the expansion joints. What are you doing next Saturday??
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Old 04-25-2015, 08:45 AM   #7
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Re: Expansion Joint Maintenance


Nicely done and as usual extreme attention to detail.
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Old 04-25-2015, 08:59 AM   #8
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Re: Expansion Joint Maintenance


Wow! That's some nice work. Extremely clean
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Old 04-25-2015, 01:27 PM   #9
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Re: Expansion Joint Maintenance


That's some great work there.
Never see that attention to detail around here.
Thanks for the walk-through.
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Old 04-25-2015, 06:45 PM   #10
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Re: Expansion Joint Maintenance


Thanks guys, you should she me frost a cake

It's not really rocket science, just takes a little practice and know how, half of what you now know

Hmm... that attention to detail theme sounds familiar

https://www.youtube.com/watch?v=LfFSaRfoGcI
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Old 04-26-2015, 07:07 PM   #11
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Re: Expansion Joint Maintenance


I finished up the driveway and the total tally for sealant came in at 3 gallons /46 pounds, or approx 36 tubes.

Even though it's a fast cure, it still takes about 3 days to fully cure beyond damaging the surface.

I try to keep it down in the joint a bit so cars can immediately run over it but will tell customers to keep the kids and animals away from it for a couple of days.

Most of the joints on this drive required the 3/4" and 1" knife and several of the expansions required the 1 1/4" knife tip to shut them up.

Glad it's done, it's a lot of bending over and knee work so be sure to grab you knee pads- you're gonna need'em...
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Expansion joint maintenance-sealant-work-001a.jpg   Expansion joint maintenance-sealant-work-002a.jpg   Expansion joint maintenance-sealant-work-006a.jpg   Expansion joint maintenance-sealant-work-004a.jpg   Expansion joint maintenance-sealant-work-005a.jpg  

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Old 09-01-2015, 09:24 PM   #12
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Re: Expansion Joint Maintenance


no need to apply bond breaker tape over the baker rod. Other than that your work looks great!
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Old 09-07-2015, 01:04 AM   #13
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Re: Expansion Joint Maintenance


Wow, I am glad this thread was brought back to life. Fricken incredible looking, dang....never ceases to amaze me how good most of you guys are at your choosen craft.

Super, do you save the cut dust to use in the joints? I had never thought of spreading the silica dust over the caulk, that is an amazingly great idea, makes the joint so much nicer.
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Old 09-08-2015, 11:02 PM   #14
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Re: Expansion Joint Maintenance


sand gives it a grout-like appearance.
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Old 10-11-2015, 07:16 PM   #15
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Re: Expansion Joint Maintenance


Quote:
Originally Posted by brhokel606 View Post
Wow, I am glad this thread was brought back to life. Fricken incredible looking, dang....never ceases to amaze me how good most of you guys are at your choosen craft.

Super, do you save the cut dust to use in the joints? I had never thought of spreading the silica dust over the caulk, that is an amazingly great idea, makes the joint so much nicer.
Sorry, I didn't catch the revived thread...no you don't save any dust, it'd be too fine anyway. It's simply #1 blasting sand, pure silica sand. Must be kept dry to perform well.
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Old 10-11-2015, 07:36 PM   #16
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Re: Expansion Joint Maintenance


Quote:
Originally Posted by Empire Seal View Post
no need to apply bond breaker tape over the baker rod. Other than that your work looks great!
I hear ya, not all joints got the backer rod so I had it out for them. The roll would have probably gone to waste since it began telescoping out anyway and was getting old.

Not many real commercial caulkers around here...nice to have you on board!
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Old 10-11-2015, 10:30 PM   #17
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Re: Expansion Joint Maintenance


Thanks for the good information and great photos that so clearly showed what you were doing.
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Old 10-12-2015, 02:48 PM   #18
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Re: Expansion Joint Maintenance


Beautiful work as always Bro!

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