How to get sustainable concrete

[@Wild_Bill57]

So good to see you back! Great video!

[@TylerLey]

Thanks!

[@ourhandsbuilteverything7461]

You have my attention Tyler! Great explanation on the CO2 binder conundrum. Concrete. Can. Become. Sustainable. Now that’s an achievement.

[@TylerLey]

Thanks for the comment. I think this is a great place to start.

[@grizzlygrizzle]

I'm not entirely convinced of the severity of the CO2 problem. Climate science has been censored, and dissent suppressed, since the 90s. Censored science isn't trustworthy science (as we saw with covid "science"), and usually indicates some kind of political or financial agenda behind whatever policy is being pushed by the distorted "science." There are climate scientists who are dissenters on the CO2 issue. Not biologists, psychologists, and so on, but scientists in directly pertinent specializations.

[@danw8012]

Hi Tyler, really wanted to thank you for making and sharing this with us all on KZbin. I'm in Australia and have taken a big step in my career from just testing Concrete, Aggregates and Soils in a Laboratory to becoming a Technical Supervisor for a large company. They are giving me further training in my new role. But your videos are great, I find your content very helpful and engaging to watch. I've learnt alot just from you. Thanks 🏆

[@solarsign]

yoooooo welcome back man!!! missed you and hope you’ve been well!!!

[@Real_Tim_S]

This is good stuff... I'm just in the process of designing a new structural concrete home, and wanted to be able to answer the "but concrete creates so much CO2" naysayers... this video dropped at exactly the right time!

[@ghettohey2388]

Hey Tyler. Why dont you do a video on your recommendations for say concrete mix for footers, slabs, stem walls, basement walls. Like what mixture and additives you would put in or not have in the mix if you were pouring

[@gregstringer7392]

Yes please

[@TylerLey]

Thanks for the video idea! The answer will depend on the size and equipment that they will be using but I'll see what I can do.

[@YoDada]

Dr tyler can you please do a video on your favourite textbooks on reinforced concrete design? Thanks

[@JohnnyKarate44]

Dr Ley!!! It’s been awhile we missed you! ❤️

[@TylerLey]

Thanks so much!

[@richhagenchicago]

I missed your videos, glad to see this one!

[@kiranrampp19]

Good video and watching your video after a long time!

[@barbarianater]

Good to see tyler is back :) 👍

[@omerkaradag5207]

you are the greatest. you are an idol for a junior lecturer, to me. most of the time concrete is considered non-environmentally friend building material mistakenly. it's the scapegoat of building industry. it's the most common building material, therefore it's not surprising that it's responsible for 5% CO2 emission annually. probably any material with heavy usage will result in with that amount of CO2 emission. if it's optimised, it has the potential to be environmentally friendly (with utilization of SCMs, aggregates, as you mentioned). people have a bias towards concrete. but thanks to concrete freaks like you, this may change in future!

[@yassineel2178]

Hi Tyler, great videos. Can you please talk about crystalline concrete admixture. Thanks

[@faqadyousuf2073]

Welcome back professor.

[@jairodominguez9489]

Can you make a video on how to make the mix for the making of hollow block with vibration and compression and hydration percent for high strength?

[@njsconstruction1201]

Your videos are very informative. Thank you.

[@BrandonAdawi]

How do I fix crazing on a concrete patio that was just poured?

[@michaelcarr2466]

Do you have any videos about adding rubber pieces to the mix? Sounds weird and interesting.

[@khaingshwezinmyint5664]

Thank you very much, Mr. Tyler.

[@alisgara]

Do you have any videos on "air crete"?

[@driftingmelodies]

Awesome video ..I researched on how to make fibre cement planks ..but I couldn't find any information on how to cure it ..should I water it like I do with normal concrete or just let it be?

[@danthecarpenter71]

Tyler, love the videos. Can you address slab curl and how to reduce it? Thank You

[@charlesviner1565]

All your videos are awesome

[@TylerLey]

Glad you like them!

[@kentmate645]

sidewalk around earth 1300 times a year?! Love your passion, I just got a job in reo

[@alexeizuzin]

Could you tell about concrete boats?

[@hawsaromerhama725]

welcome back, iam glad your back

[@TylerLey]

Thanks!

[@haniabobakr]

I love your explanation. thank you prof Taylor

[@TylerLey]

Thanks!!!

[@jeremyfranklinross]

Tyler! When are you going to tackle fabric formed concrete? Always great content, thanks!

[@Male_Canada]

Great videos. Im a grad student, I really enjoy your channel.

[@TylerLey]

Thanks for watching!

[@21stcenturyentertainment14]

Pls do tutors on weekly basis 😊 Really informative

[@TylerLey]

Thanks for the note and encouragement!

[@H0mework]

Have you done a video on sealants? Just read about crystalaline sealants. They know why roman cement works the way it does, I think one of your early videos talked about crack size.

[@troy1868]

Hey mate, Do you know if it's possible to lay a non self leveling mortar at 2mm (about 1/16 inch) thickness Would adding microfibres and latex help?

[@stratelyze2095]

This may be off topic but building pickleball courts is a big thing these days. From what I have studied is Post Tension Concrete the best products or are their cheaper ways to have a long life community court with low maintenance, long life and crack resistance.

[@ernestocantu1336]

Grande Taylor ley, bastante interesante tu conferencia de secretos del concreto reforzado en el ENACE, muy importante la explicación de el uso de dosificación de la microfibra y macrofibras un saludo desde Saltillo,coahuila México, I LOVE CONCRETE!!!!

[@VenomCruster]

Hi Tyler, I am building a house in Australia, I will be using a concrete slab as the foundation. Can you give me a list of the most important things I should consider/do?

[@abelberhanemeskel1426]

Thank you for the video. I know it is off topic for this video but can you do a video on concrete stress strain behaviour being influenced by testing machine confinement? Thanks

[@IronMan-yg4qw]

what you think of geopolymer concrete?? better than standard concrete by far!

[@stormbreaker1773]

Thank you for the tools

[@montaseermeraz2565]

Hi,is it possible to produce UHPC with this electric mini collomix mixture?

[@TylerLey]

I am not sure. You need an insane amount of mixing energy to make UHPC. In a drum mixer it can take hours to make it.

[@alialloul9037]

Great video, Thank you

[@pirjee99]

I want to make a large light weight flowerpot with concrete. Can anybody give me a formula for the concrete mix? Is there anything that I can add so that it will not crack? Thanks in advance for your help.

[@mabenba]

Great video as always! Thanks for your amazing content Tyler. I have a question. Couldn't we use more powerful admixtures in order to reduce the amount of Binder needed? I mean, for example, use some Concera (from GCP, I don't know any other brands) to enhance flowability and cohesion while reducing cement and maintaining slump and strength.

[@nelsonhuezo5385]

Great video Tyler! What do you think about RCA recycled concrete aggregates for sustainable concrete?

[@shiklo2862]

once again an amazing video. Can you plz make a video on engineered cementitious composite (ECC)

[@TylerLey]

Thanks! They are really cool. What would you like to know?

[@shiklo2862]

@@TylerLey How we can reduce it cost with ,a little bit compromising, or without compromising its strength. And further where we can use it? whether it is going to replace RCC? and much more.

[@shiklo2862]

the link of your website is not working. can you please check it?

[@TylerLey]

It works for me. It should take you to a DropBox folder.

[@anatolyv7021]

Hi sir! Thanks for great video. It'll be very interesting to highlight your opinion about protective solutions for aerated concrete from carbonisation and etc. Anyway good luck!

[@madpete6438]

Missed you. Thanks

[@TylerLey]

Thanks!

[@carsongbaker]

Yes!!! Go Tyler! Such a great summary. Do you have a source for those fly ash / slag quantity targets? Are there disadvantages to using that many SCMs to be wary of?

[@TylerLey]

Those are the high end of what people use in the industry. Higher amounts of SCMs can delay set time and also early age strength gain.

[@carsongbaker]

@@TylerLey thank you! I'm a structural engineer, and really trying hard to change our specs to enable higher use of SCMs. Are there any guidelines/rules in ACI or elsewhere that I can point to for justifying SCMs in high quantities like you've mentioned? If I say "up to 50% slag acceptable" someone will ask where that comes from...

[@Dmanish54]

Hi sir Can you make video on some new technologies? (Eg Mivan technique) Please do if get time that would be really helpful .

[@imadkhan2644]

I doubt when you say 90%of co2 comes from binder alone, this may be the case if we use only portland cement but if we change the binder composition reducing the co2 emission, contribution percentage will come down from 90.

[@randygifford9799]

Great video and info. Check your info at 13:22, two different sets of numbers.

[@kevinshaw5178]

Good afternoon Tyler. If injecting carbon dioxide into the cement makes calcium carbonate then why is that any better than just adding in calcium carbonate rich mineral in substitute for cement? Is adding the unhydrated powdered limestone an equivalent effect. Maybe the purity of natural minerals content of calcium carbonate vs the calcium carbonate formed via C02 injection is a factor in the end product? I must be honest I am a skeptic with this technology not because of the science but because of the business end of this. Tracking where the Co2 came from and its own manufacturing carbon footprint as well as it's accidental release to atmosphere is concerning but maybe I just need some guidance. Thanks for any help with this topic. Best Kevin

[@kellytkachenko]

I DO have a real question ""question of recycling of concrete " you have no video of that

[@roguethinker6284]

I love this guy. I used to know precisely 0 jack about concrete. Now I see it everyday in a different light and all thanks to Prof Ley. Incredible what a passionate man can do with a curious mind

[@TylerLey]

Thanks so much!!!

[@realethiopia]

Thank you man!

[@TylerLey]

Thanks so much!

[@AbubakarSalhassan]

Hey sir, can u please make a video on partilal replacement of cement with rice husk Ash. I wants to make concrete hollow blocks with more strength at a reduced cost that's why you as a professional. Thank u, may Allah rewards you.

[@tronghieule6998]

Thanks Bro 👍👍

[@bencheevers6693]

I'd imagine that the energy required to make the concrete is what causes the vast amount of CO2 because concrete is so energy intensive so this could be a really good candidate for renewables because it's probably made mostly during the day and finding things that use a lot of energy that can directly be replaced with renewables without the need to store power is probably the only path forward for renewables because storage is so difficult and expensive.

[@fritzpak4821]

actually, most of the C02 produced from concrete is from cement manufacturing. Cement is made when C02 is released from limestone.

[@bencheevers6693]

@@fritzpak4821 I misread your comment and went on a long diatribe about what I thought you had said, you're addressing exactly what I said, cement manufacturing is incedibly energy intensive and is done mostly during the day so renewables that could pump directly into the kilns could be a good application because it doesn't require expensive energy storage. I know you're talking about limestone which is CaCO3 or something like that converting into cement and releasing it's carbon directly but that's gotta be a fraction of the CO2 released from burning fossil fuels to heat that limestone up to 1400 degrees C, like that's a ridiculous amount of energy

[@fritzpak4821]

@@bencheevers6693It really is an insane amount of energy consumed. We actually offer several products that can be used to reduce extra cement requirements in high strength as part of our commitment to helping the industry go greener.

[@richardheinen1126]

Glad your back!!! I have a video suggestion or a suggestion for your class experiments. The farmers almanac has best days to pour concrete, can you run some tests and see if there’s anything to it? And see if you can figure out why it’s better, if it is?

[@TylerLey]

Very interesting idea. What if I did a video about the best days to pour and then we could see if they line up? Take care!!!

[@richardheinen1126]

@@TylerLey sounds like a plan!

[@technosaurus3805]

Concerns about toxicity of contaminants in SCMs for interior spaces?

[@TylerLey]

No concern!

[@billsmith5166]

Tyler. I'm a PITA and I know you're not likely to answer this question, and if you do, you might be concerned with your liability. Please understand all I'm looking for is general advice, not design advice. Hopefully you'll consider it.. Here we go. I've got a 42 inch block foundation under a hip roof garage that's bowing outward on 2 sides. Don't think it's much, if at all in the last 8 years. It's shifted away from the slab about 2 inches in the centers. It was built 50 years ago. The estimates to have plates on the exterior with threaded rod running in to ground anchors under the slab and then poured over similar to a pier are $7,500ish. Too much. My thought after 3 months of dreams and wandering thoughts, is to drill 3-4 inch holes in the plate, fill the block cavities with 1 1/2 bags of Quikrete with 2 fiberglass rebar buried and a full length allthread coming up through the hole in the plate. Then I've got 2 choices. Drill through the filled block horizontally, bolt it to a 10' x 10" plate on the outside, and run it through a bracket that's been cone anchored to the slab floor. Tighten the thread rod holding the outside plate to 80 lbs. Other choice: Bolt a bracket onto the allthread coming out the hole in the wood plate capping the filled block. The bracket would be L shaped 1/4" steel bent downward toward the slab, then place another L shaped bracket anchored to the slab, run allthread through both brackets, put a bolt on each side of the brackets and tighten to 80lbs. The top of the plate to the slab is about 5 inches, so not entirely lateral force. What do you think, and which might you consider using? I will have one follow up question following this, if you are actually willing to respond, which I'm sure you won't, and I don't blame you.

[@pavelnikulin8240]

Still waiting a video on foam concrete aka cellular concrete

[@TylerLey]

Keep waiting... I don't like to tell people that their baby is ugly.

[@claudiapuga9524]

Very nice your chanel, but you could talk slower and reinforce the conclusion because I understood but not absorbed immediately ! I want to tell my engineer what i want!

[@Stealthsilent1337]

I loved your last video where you said, you were a concrete Fa reek, that was hilarious

[@interstellarsurfer]

How to obtain unobtanium. 🙃

[@charlesviner1565]

👍✌

[@garysmith789]

Portland Limestone Cement sucks. Can’t finish, durability pour

[@BastoDaWaver444]

I guess I'm also a concrete freak : )

[@kellytkachenko]

MMmmm ?? any way nice weather

[@HEMPPUBLISHINGCOM]

I sent a email to you using YT email you have, please check for the email in junk mail, it will be under Hemp@ And thanks for your videos, even if I do not hear from you...

[@rudolphmurphy1847]

It's good to care about the earth but we should not worry and turn things into a religion...there are many things that we don't understand about this life. I trust God, He's in control.

[@RichardKinch]

Sounds expensive, shoddy, and/or deadly. One of those inevitable triadic compromises engineering cannot resolve. A tournament of unearned risks. I'd prefer Fermi estimation to Einstein's spreadsheets.

[@TylerLey]

Almost all of the suggested methods to improve the sustainability also improve the cost, strength, and durability of the concrete. You should watch the video I suggested. SCMs have been used for more than 80y.

[@huntera123]

I think solving the CO2 budget is a solution looking for a problem and the "solution" has huge costs and problems of its own.

[@TylerLey]

Maybe so but a lot of the CO2 solutions for concrete just make the material better and less expensive.

[@huntera123]

@@TylerLey Thank you for the excellent reply. Better concrete should be the goal. EPD is like a religious euflection. Great for religious ceremony and comfirt, useless for objective goals.

[@ernielarkin4793]

How to make dogshit. A book by a man who has never had to lay a trowel on a floor. Your talking about a 20 year old fly ash mix. Use some glass for your fines, some polymer admixture to lower you water content. Look to the countertop mixes for more sustainable designs. This guy is stuck in 1995.

[@TylerLey]

This video is about a simple framework that can be used to compare any proposed solution. I am not here to tell you how to cook the steak, I am giving you a way to compare different solutions. You should try it out with the countertop mixes. There is more information for recycled glass in the video. Unfortunately, lowering w/cm won't help you with your initial carbon footprint. You can prove it to yourself with the free tools that I gave you.

[@charlesviner1565]

I already gave video a ✌👍🧱a long time ago

[@charlesviner1565]

It's nice to meet someone with the interests 🧱👍

[@TylerLey]

Thank you!