Comparing Curing Compounds for Concrete

Curing compounds are a widely used method to evaluate the performance of concrete. This video compares three different curing compounds in their ability to reduce moisture loss and also prevent curling in paste beams. Next, the experiments are repeated with different coverage amounts of curing compounds. The results show that the PAMS curing compound shows the best performance and may be able to be used at lower coverage rates than the manufacturer recommends and still obtain satisfactory performance.
You can learn more about this in this paper:
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A huge thanks to Hailey Goodale, my director of awesome, for editing this video.

[@den2929]

Curing is one of the most overlooked aspects of concrete slab construction. Good explanation, including material options and costs. Thank you Professor.

[@dirkcrawford1254]

Thank you Tyler for promoting curing and the concrete industry in general. The work that you and your students do and the resources that OSU puts into concrete has helped to make me a fan of the Cowboys and a supporter of Oklahoma State.

[@TylerLey]

Thanks Dirk for your kind words. Go Cowboys!!!!

[@AK-47ISTHEWAY]

I once drank a concrete milkshake. My digestive system has never been the same...

[@ehsnils]

I see the advantage of curing compounds to improve the concrete, but then the next factor would be what a curing compound would do to the ability to put a coating on the concrete like an epoxy coating. A wax coating may cause problems for some coatings to stick to the concrete.

[@TylerLey]

True! It depends on what you want to do and your timing.

[@doctordoom2710]

I love your videos man!!!!

[@TylerLey]

Thank you so much!!!

[@douglaspohl1827]

You could blow the socks off with the real characteristics of AERATED CONCRETE aka aircrete with basic mix tests which would clearly demonstrate the best practises for this product. I think a student would enjoy this education with so much AIRCRETE DIY on social media. Any of your students interested in becoming an AIRCRETE freek, Professor Ley?

[@TylerLey]

Mixes have already been cast. Video is being put together now. It won't cover everything but I think you will like it.

[@douglaspohl1827]

@@TylerLey Looking forward to seeing real world tests. Thank you!

[@scorpio6587]

@@TylerLey I can't wait!

[@rebel1333frank]

Thanks for the videos Tyler! I've been learning so much

[@scorpio6587]

Another fascinating video. I am not able to click on your student's video.

[@DonovanSexton]

Getting ready for your World of Concrete presentation? Sadly, I won't be able to go due to prior commitments. Very sad. A question for you as a concrete expert and World of Concrete presenter. I didn't see any opportunity to purchase a post-conference presentation video. Many of the conferences I go to for my industry sell such videos in case there are some presentations you missed that you wanted to attend. Plus it's a great additional money maker for the conference. Appreciate all you do and will be building an ICF home in the next couple years in earthquake territory and I'm super excited with all the new technologies and expanded knowledge coming to concrete. --A fellow lover of concrete.

[@shahbaloch11]

Is curing compound better than water curing?

[@richardross7219]

When I was in grad school forty years ago, I ended up building equipment for civil engineering research. Budget was low so I did a lot of recycling of scrap from other departments(aka scrounging). I had the machinist/mechanical skills to make the needed parts in our departments machine shop. Your curing compound spray jig seemed interesting. Did you move it by hand or did you use a power feed mechanism? I would think that a worn(and cheap) Bridgeport Milling machine would work well for you if the cutter head was replaced with your spray nozzles. The miller gives you precise power feed control in x, y, and z directions. Good Luck, Rick

[@TylerLey]

Thanks Rick, We moved it by hand. There is always a balance between simplicity and complexity. If we ever need to take things to the next level I will think about the milling machine.

[@richardross7219]

@@TylerLey I am a believer in KISS. When you are trying to put things together on a shoestring budget, start looking for things well ahead of time. The Bridgeport would give very high accuracy. It would also allow you to make rate changes easily. I could be wrong and you may have a big budget. I am used to the civil engineers having to make up for the over budgeting of others. It was especially that way in the Army. BTW Have you looked a the New Orleans pictures? It looks like the typical inadequate reshore problem that seems to strike every couple years. When I was doing forming and shoring design, 15 years ago, they still didn't have an industry standard for reshoring and I refused to design it. It was too dangerous, especially because contractors don't follow directions and owners don't pay for adequate inspections. Good Luck, Rick

[@marcredgate7288]

How would pulp curing stack up against PAMS in a temperate environment?

[@FilmFactry]

QUESTION: With your expertise, What admixture would you say can aid in a quick set-up/cure for extruding concrete with a 3D printer. The need for one layer to set-up enough for the next lift not to deform the layer below. Thanks!!!

[@TylerLey]

WE are working on this. Look for a video soon.

[@AndreasFragou]

Nice video. I tried to find PAMS but I cant find it. Is there any specific supplier that provides that?

[@RobertWilliams-mk8pl]

I'd like to know what you have to say about the collapse of the Hard Rock Cafe. Did it have to do with rushing a curing process?

[@TylerLey]

Thanks, I think it is too early to tell. I have not seen video of the collapse yet.

[@wolvenar]

Nice hint toward the concrete milkshakes. 😁

[@beurky]

This my favorite video of yours

[@stevewaclo167]

Hi Tyler, It’s me again with the R&R driveway in the high, dry desert of northern NV. Contractor applied a curing compound (only one coat I fear...I wasn’t there 😟) and the surface appeared wet for 3-4 days then gradually and in random sections, went white over a week. It’s going on a month now and I want to know when a sealant would be appropriate. Contractor said a month. Any recommendation on a product? I’ll lay dow two coats, of course 👍👍👍.

[@TylerLey]

A month is a good time. I would use a silane. See my sealer video: kzbin.info/www/bejne/gIqTiZqfdt2Nb5Y

[@hernanmujicah1]

Hi Tyler. Thanks a lot for all your very interesting videos. I enjoy them. Have you hear about Ductilcrete system? What do you think about it? Regards.

[@aetius31]

3:50 Are there no health problems associated with the use of pams?(for the workers mainly)?

[@TylerLey]

Good question. We have used it a lot and in confined spaces with not enough air flow then it can make people dizzy. For external construction or places with lots of air flow then I would be less concerned.

[@arthurwhitfield2184]

If you apply a curing compound on to concrete road how many days do it takes to make it passable to any kind of vehicles

[@heshamabdualla3849]

Does moisture or relative humidity effect CTE measurement? Why does AASHTO T336/CTE test require running the test while the sample submerged in water during testing? Unless they want to exclude the effect of moisture-related shrinkage, not sure!!. In reality, concrete is not really fully saturated so measuring CTE at room temperature or dry condition may represent the actual field behavior. Sorry, it is not related to the top. Thank you for your amazing presentation

[@wearemilesfromnowhere4630]

Amir link?

[@TylerLey]

The paper link is in the notes. Amir did an awesome job on this work for his dissertation. I also linked to his video in my last video.

[@AlexP-yb7gh]

Dang i guess im that dummy who didn't deep dive into researching concrete curing, i had my concrete poured 6 days ago and the contractor didn't even bother to wet cure it, about 16hrs after they poured it i stumbled on this channel and i got the water hose and water as often as i could so cross my fingers now that it takes a couple of years before it starts to chip away from the top

[@ZamaNRaPBanD]

wet curing does damage to the slab in hot environments?

[@kriswantosantoso8901]

Hi Tyler, how about using admixture that claim can do internal curing. Are they reliable too? Have you seen concrete slab using internal curing? How's the result compare to the others?

[@raw4sxr]

Pls make video on cracks in accropode and how to avoid.pls advise

[@brennandc]

Can silane/siloxane type sealers be used as a cure & seal upon finishing concrete? If not why?

[@thomasparks4209]

Tyler Ley hey I am a power washer and I have a guy wanting me to remove curing compound from 10,000 sq ft concrete is this possible with my 3500psi steam washer?

[@ahlamddj]

can you cure old concrete ? can curing be restarted resumed??

[@martbosman8373]

There is a oaper on the web about adding sugar to the mix to slow curing and according to the paper when the right amount is added it also makes the concrete stronger after 28 days. What can you say about it?

[@TylerLey]

This is true! There are lots of other carbohydrates that impact the setting of concrete like glucose and citric acid. If you slow the reaction down earlier then the long term strength will be higher. I am not sure that we need to be focused on that because if we design our concrete right then we will get plenty of strength. Thanks for the question!

[@martbosman8373]

@@TylerLey The reason that i am asking the question is because i regularly work in remote areas ,where additives are not readily availible. I have been using sugar to slow down the reaction when the local minimix can only deliver 2m3 at the time and it is 30 degrees Celsius at 7 am. ( Australia). I would like to know the optimum quantity of sugar per m3.

[@galvanizedgnome]

I drank your milkshake

[@NomenNescio99]

Why do I have a extreme urge to drink a milk shake right now?

[@TylerLey]

Nice!!!

[@saadhadi1274]

Just as always, why don't you give a specific data so the informations become useful on site rather than general information,

[@Meaderf]

Saul Goodman

[@bryanekers3472]

Fourteen bucks for a milkshake?! Is there bourbon in it?

[@stevemartin6178]

Diesel fuel as concrete is curing.

[@stevemartin6178]

Diesel fuel- works great for sealing concrete. Ancient Chinese secret.

[@amm2472]

you just talk and talk and don't show us anything or any real examples