Hey concrete brothers. Its mid june these days and the most important thing is stay safe out there in the heat not only does your concrete need water you and your guys do to.
Costco 3lb containers of salt in each glove box. I've had to threaten 2 employees with a write up or termination if they didn't swallow a handful of salt when they were having a electrolyte indused heatstroke. If you're thirsty and your stomach is full of water you're going in into that type of event. Each a couple piles of salt and you'll be better immediately and hopefully recovered in 10 min.
Hello Dr. Tyler, thank you for your videos. If you'd allow me to make a request, if possible, I'd like to see UHPC being talked about on your channel. There's likely enough material for a few videos.
WOW Tyler, your video is so detailed, accurate, just mind blowing. I would never in a million years know what to ask or how to select the right company & still be efficient with my payment.
Just left a comment on your previous video where you asked for suggestions on video topics asking for exactly this. Absolutely loved the video! Very helpful.
Remember to add one yard+- extra waste to prime concrete pump and hoses lines . And use retarder in pump mix to be safe especially in hot weather will kick off in pump a disaster.
Pumpable concrete for grouting CMU walls (adherent to that ASTM standard that I forgot the number of) out here in western NC is $210 per cubic yard. I've always wondered what happens when the big boys do a prism test and the concrete is bad. They just poured thousands of yards for the foundation of a skyscraper and the test shows 500 psi below design requirements. And they find this out 28 days after the work is done. What next?
Good question. Compression tests can be done prior to 28 days that the concrete is on track to pass the 28 day test. The 2500 psi grout I ordered tested at up to 5000 psi. So it's much stronger than spec and thus very unlikely to fail the 28 day test.
They wait for 56 days to see if it makes strength. If it still doesn't then they take a core. ACI 318 says you only have to be within 85% of the design strength on a core taken from a structure. If they still don't make it they do more engineering to see how it impacts the performance. It is not common for a removal and replacement but it does happen.
I have done lots of research on concrete and rebar for a project I am designing, I know about many different add ins for concrete like superplasticizers, fiber reinforcement, air entrainment, retarders, accelerators and I know generally what each does, could you go over add in's like fly ash, slag, corrosion inhibitors, lime, volcanic ash (used in Roman concrete), etc and in more detail the items I mentioned. It would be nice to see the entire menu of add ins available and know how each effects the concrete, its workability, its longevity, its ability to resist cracking, ability to heal i.e. repair cracks, and finish qualities.
@@TylerLey yes I have. And Im willing to interduce it to a local company (after graduation ofc) so I want to solve more different problems with it and deeply understanding it problems like designing mixture for bridges or airfield pavement or even residentials. But the problem is here in Syria we don't have a source for fly ash. All of our mixtures don't contain SCM's.
Another critical factor is being prepared for foulups on site. What are you going to do if the truck is stuck in traffic for 2 hours, finally shows up, and starts pouring stale, defective product?
@@TylerLey My question was rhetorical. But stale concrete happens all the time, and contractors are not typically ready for it or even aware of it happening. Typically it just gets foisted.
Hello, professor Tyler, love your content and enthusiasm towards concrete. I've been looking for some quality content on Bendable Concrete and I'm unable find any. I wanna work on this cool concrete but i'm really confused on some things. I'd really appreciate a detailed video on Bendable Concrete including which type of fibers should be used, applications and limitations etc.\
Thanks! This is often called ECC. It doesn't use large aggregate and it has a lot of fibers. You need special fibers that do a great job bonding to the concrete. You should reach out to Victor Li at the University of Michigan. He developed it.
OK, I need some custom mixes designed. Who do you recommend or Tyler do you have a consulting business also? Looking for custom mixes for exposed concrete walls in residential construction. 1. Im using cast in place sandwich walls. 2. Helix micro rebar. 3. Xypex to avoid air entrainment. It has a negative effect on appearence. I need to place woth mixes to see how thin i can get thw exterior wythe and then work on appearence. Im looking at doing a custom white mix using marble for aggregate. Depending on how it looks it will be prefab elements like countertops and showers.
Estimated, is it possible for you to make a video about the methylene blue test in the evaluation of aggregates? I don't see an update in the standards, is it still a valid test?
The first step to wide publication for the common user - great job. Still want to see some aircrete for flower boxes and wall panels.... the YT stuff varies so much - there needs to be some myth busting.
If you are ordering a concrete you would like it to be within +/- 1.5" or so. W/cm is tougher as it is hard to measure. Watch my videos over the Phoenix to learn more. A good number is +/- 0.02 w/cm.
Give them the dimensions and let them figure it. That way they won’t get mad at you when you run short 🤣 The only thing Tyler missed is, figure out where the driver is gonna wash his truck/chutes up after the pour. This is a pretty big deal. And if you’re a DIY’er. Be ready to get with it when the truck arrives. The concrete does not wait for you to start setting up, it’s on its own schedule.
How do you handle concrete with less common mix designs? I'm guessing that most ready mix suppliers don't keep every possible type of cement SCM, fiber, or admix in stock. Can you call them beforehand and ask what materials they keep in stock? I would imagine specialty materials can be ordered if you have a big enough volume. Let's say I want to pour a large concrete floor that will be polished. I don't want any cracks or saw cuts; that would push me toward something like a type K cement, a fiber mix, and maybe a lightweight aggregate for internal curing. How would I order that?
You should watch my next few videos. I talk about how to do this without ordering crazy concrete. In summary, reduce the shrinkage. Honey tubs brought up SRAs. They are ok but they are expensive and they impact your strength. I would reduce paste content and then reduce restraint. More details in the video. I am a big fan of fibers. Most ready mix plants worth their salt will have them. Very few people have a Type K or a light weight aggregate and so no one uses them.
Good info. I always figure I lose 1/2 yard in the pump and I never want to run short. Labor is much more expensive than ready mix. I would like to see a video on GFRP rebar.
Tyler interested in hearing your thoughts about Dry pour concrete Im trying to make it strong Using Compacted to take care of the air voids Water curing to strengthen the Dry pour through hydration/Burlap curing for 3-7 day's Very interested in hearing your insight and thoughts if there is a way to make Dry pour concrete strong as or equal to wet pour 🤙 thank you
Dry pour is not a real thing outside of the Internet. Try it with a cake sometime. Pour the wet ingredients on top of the dry ingredients and see how good your cake turns out with no mixing.
@@SwedishDeathLlama appreciate it 🙌 actually made 5 dry pour slabs using compacting, Burlap type water curing, with a sand wash finish, I believe I cracked the Dry pour strength code interested in hearing Mr Tylers thoughts🙌🤙 videos are on my channel 🤙
@@DiyTheGrappler I think you can make dry pour slabs in the way that you mentioned but do you think it is less work then just ordering ready mix concrete? Are you happy with the surface finish? It really depends on what you want to achieve.
@@TylerLey thank you for the response!! Been waiting! I have mentioned you in many of my videos I have made many slabs / pavers using dry pour method adding Water curing for strength (burlap method)7 days covered then continue to water cure for 28 days Compacting dry concrete/vibrating side of forms of to reduce air voids and pockets Been using sand mix 5000psi to top the dry pour to get a clean sand wash finish I ultimately want to make a driveway using the dry pour method along with curing and compacting to eliminate potential problems, do you think dry pour is capable of having the same or close to wet pour strength? Thank you 👍
This is great...of you're in a perfect world. The sad reality is that most important question you need to ask about a supplier is: Do the f*in' care at all? Ordering concrete in a rural area but from a plant close to the job (about 6 miles) I asked for a 4" slump for the first pass on a pump job. We were then going to add water to that truck to bring it down to a 6" slump to finish the pour (across the rest of the trucks which were then to be sent as 6"). BS! I have mixed and poured (wheelbarrow or electric drum) hundreds of 80# sacks on small projects...this stuff was a loose as I've ever mixed for small flatwork or piers in holes...and too loose for the forms. By the grace of God, the forms held (there is prayer in concrete). After the pour, I spoke w the plant...first, they sent the whole job as a 5" slump on the tickets, second, the drivers wash the entry to the drum after loading which adds water to the mix, makingbit looser. Ugh! I can't speak for urban areas, but in rural areas, across all disciplines I've encountered, finding people who care about details and doing things correctly is the biggest challenge. As for concrete, the next time I order concrete from, well, any plant, I will have a slump cone. It's a miracle my forms held w the runny snot I got delivered. The point behind this is: you can order filet mignon, but if the cook thinks you don't know the difference (or if the cook just doesn't care), you may get Salisbury steak.
I usually have my structural engineer give me the properties needed, I send that to the plant and they create a mix design which I send to my engineer to approve.
You're making blue collar smarts into rocket science.That engineer isn't really needed unless you're really green..Like asking an electrical engineer if you should use a 14 or 16 gauge extension cord for a hair dryer
Tyler, I am seeing an over whelming amount of videos about 'dry pouring' concrete. Not only is everyone on youtube doing this breathing in dangerous dust, but they are walking in the dry mix with their flip flops! Can you please debunk this!!!!
If you don't really care about performance or appearance then I think it can be ok. It is basically expensive stabilized base. I will see if I can get my class to do a project on it coming up.
Ordering 1.2 times more than you need,much less 1.6 is ABSOLUTELy NONSENCE...HE must be rich..and suggesting you use a shhoot!How else?no mention here of so many factors.!
You're the best on UA-cam talking and teaching so beautiful and logical tricks about construction. Thank you.❤❤❤
Hey concrete brothers. Its mid june these days and the most important thing is stay safe out there in the heat not only does your concrete need water you and your guys do to.
Costco 3lb containers of salt in each glove box. I've had to threaten 2 employees with a write up or termination if they didn't swallow a handful of salt when they were having a electrolyte indused heatstroke. If you're thirsty and your stomach is full of water you're going in into that type of event. Each a couple piles of salt and you'll be better immediately and hopefully recovered in 10 min.
@@sparksmcgee6641 useful - and accurate.
Hello Dr. Tyler, thank you for your videos. If you'd allow me to make a request, if possible, I'd like to see UHPC being talked about on your channel. There's likely enough material for a few videos.
Thanks!
What specifically did you want to know about UHPC?
WOW Tyler, your video is so detailed, accurate, just mind blowing. I would never in a million years know what to ask or how to select the right company & still be efficient with my payment.
I am glad it was helpful!
Just left a comment on your previous video where you asked for suggestions on video topics asking for exactly this. Absolutely loved the video! Very helpful.
Glad you like it! Please keep the comments coming!
Tyler, I find This channel the theoretical component to the practical one by West Coast Custom Concrete. All the best.
Glad you like it!
Remember to add one yard+- extra waste to prime concrete pump and hoses lines .
And use retarder in pump mix to be safe especially in hot weather will kick off in pump a disaster.
Pumpable concrete for grouting CMU walls (adherent to that ASTM standard that I forgot the number of) out here in western NC is $210 per cubic yard.
I've always wondered what happens when the big boys do a prism test and the concrete is bad. They just poured thousands of yards for the foundation of a
skyscraper and the test shows 500 psi below design requirements. And they find this out 28 days after the work is done. What next?
Good question.
Compression tests can be done prior to 28 days that the concrete is on track to pass the 28 day test.
The 2500 psi grout I ordered tested at up to 5000 psi. So it's much stronger than spec and thus very unlikely to fail the 28 day test.
A proper contract under the UCC makes the supplier liable for consequential damages for faulty materials. Gotta have that skin in the game.
They wait for 56 days to see if it makes strength.
If it still doesn't then they take a core. ACI 318 says you only have to be within 85% of the design strength on a core taken from a structure.
If they still don't make it they do more engineering to see how it impacts the performance.
It is not common for a removal and replacement but it does happen.
I have done lots of research on concrete and rebar for a project I am designing, I know about many different add ins for concrete like superplasticizers, fiber reinforcement, air entrainment, retarders, accelerators and I know generally what each does, could you go over add in's like fly ash, slag, corrosion inhibitors, lime, volcanic ash (used in Roman concrete), etc and in more detail the items I mentioned. It would be nice to see the entire menu of add ins available and know how each effects the concrete, its workability, its longevity, its ability to resist cracking, ability to heal i.e. repair cracks, and finish qualities.
Professor can you make more videos about the tarantula curve?
What do you want to know? Have you seen my Tarantula Curve playlist?
@@TylerLey yes I have.
And Im willing to interduce it to a local company (after graduation ofc) so I want to solve more different problems with it and deeply understanding it problems like designing mixture for bridges or airfield pavement or even residentials. But the problem is here in Syria we don't have a source for fly ash. All of our mixtures don't contain SCM's.
IS there a video on rebar patterns? - application /pros/cons including circular rings? tks
Another critical factor is being prepared for foulups on site. What are you going to do if the truck is stuck in traffic for 2 hours, finally shows up, and starts pouring stale, defective product?
Don't accept the truck. The batch time is on the ticket. If it is more than 1h late then I would send back and not pay.
@@TylerLey My question was rhetorical. But stale concrete happens all the time, and contractors are not typically ready for it or even aware of it happening. Typically it just gets foisted.
What about fibre additions. Long and short fibers.
I will talk more about that in my slab videos. Those are coming out soon. I also have videos on fibers where I talk about them.
Amazing! You've just explained everything I needed to understand.
Hello, professor Tyler, love your content and enthusiasm towards concrete. I've been looking for some quality content on Bendable Concrete and I'm unable find any. I wanna work on this cool concrete but i'm really confused on some things. I'd really appreciate a detailed video on Bendable Concrete including which type of fibers should be used, applications and limitations etc.\
Thanks! This is often called ECC. It doesn't use large aggregate and it has a lot of fibers. You need special fibers that do a great job bonding to the concrete. You should reach out to Victor Li at the University of Michigan. He developed it.
How about adding any of these products to your concrete; adva-90 or Sika Visco concrete-2100 or eucon 537 or other products like these?
These can be great! You need to understand what you want to do with your concrete.
Great job Tyler! Fantastic overview of how to order concrete.
No recent videos on the Harvard & MIT discovery on Roman concrete?
OK, I need some custom mixes designed. Who do you recommend or Tyler do you have a consulting business also?
Looking for custom mixes for exposed concrete walls in residential construction.
1. Im using cast in place sandwich walls.
2. Helix micro rebar.
3. Xypex to avoid air entrainment. It has a negative effect on appearence.
I need to place woth mixes to see how thin i can get thw exterior wythe and then work on appearence.
Im looking at doing a custom white mix using marble for aggregate. Depending on how it looks it will be prefab elements like countertops and showers.
I do help people with their mixes but I think you need trial batching to do what you want to do.
Estimated, is it possible for you to make a video about the methylene blue test in the evaluation of aggregates? I don't see an update in the standards, is it still a valid test?
It tells you how much clay is in your sand. It can be useful.
The first step to wide publication for the common user - great job. Still want to see some aircrete for flower boxes and wall panels.... the YT stuff varies so much - there needs to be some myth busting.
What sort of tolerances are reasonable to expect for things like slump/strength/WC. ratio?
If you are ordering a concrete you would like it to be within +/- 1.5" or so. W/cm is tougher as it is hard to measure. Watch my videos over the Phoenix to learn more. A good number is +/- 0.02 w/cm.
Why would someone pour concrete over that kind of base??? @05:23
Some people just pour over what they have.
What if I'm just buying bags of it? I need to do this a cheap as possible, but make it as good as possible.
Give them the dimensions and let them figure it. That way they won’t get mad at you when you run short 🤣
The only thing Tyler missed is, figure out where the driver is gonna wash his truck/chutes up after the pour. This is a pretty big deal.
And if you’re a DIY’er. Be ready to get with it when the truck arrives. The concrete does not wait for you to start setting up, it’s on its own schedule.
Agreed. Even though you can figure out the volume, give them the dimensions so you don't run out of material!
How do you handle concrete with less common mix designs? I'm guessing that most ready mix suppliers don't keep every possible type of cement SCM, fiber, or admix in stock. Can you call them beforehand and ask what materials they keep in stock? I would imagine specialty materials can be ordered if you have a big enough volume.
Let's say I want to pour a large concrete floor that will be polished. I don't want any cracks or saw cuts; that would push me toward something like a type K cement, a fiber mix, and maybe a lightweight aggregate for internal curing. How would I order that?
The concrete plant might have an admixture that reduces shrinking. SRA is shrinkage reducing admixture.
You should watch my next few videos. I talk about how to do this without ordering crazy concrete. In summary, reduce the shrinkage. Honey tubs brought up SRAs. They are ok but they are expensive and they impact your strength. I would reduce paste content and then reduce restraint. More details in the video. I am a big fan of fibers. Most ready mix plants worth their salt will have them. Very few people have a Type K or a light weight aggregate and so no one uses them.
Good info.
I always figure I lose 1/2 yard in the pump and I never want to run short. Labor is much more expensive than ready mix.
I would like to see a video on GFRP rebar.
Thanks!
I have a video on GFRP but it is a little old. I will make an updated one coming up but I have a few other videos coming.
Why is there a gorn in the thumbnail?
Talking about space, could you please make a video about the fondag that spacex spread over most of south Texas?
He made an appearance in the video.
Not sure if I know enough about the details to make a video.
Great T-shirt, the videos are good too! Thank you.
Thanks so much!
Nice sharing sir...but structural concrete w/c ratio should not more than 0.40...as per my practical experiences...
We pour higher w/cm all the time in the US for structural concrete.
@@TylerLey okay sir understood
What do you think about the new TikTok concrete process dry pouring?
I think it has its place but I wouldn't use it on concrete that I care about.
Thank you for the upload!
Thanks for watching!
Excellent information!
Thank you!
Hello my Concrete Brothers
May the lord bless you brothers and bless our lovely professor Tyler
Thank you daniel!
👍Great videos
Thanks!
Tyler interested in hearing your thoughts about Dry pour concrete
Im trying to make it strong
Using
Compacted to take care of the air voids
Water curing to strengthen the Dry pour through hydration/Burlap curing for 3-7 day's
Very interested in hearing your insight and thoughts if there is a way to make Dry pour concrete strong as or equal to wet pour 🤙 thank you
Dry pour is not a real thing outside of the Internet. Try it with a cake sometime. Pour the wet ingredients on top of the dry ingredients and see how good your cake turns out with no mixing.
@@SwedishDeathLlama appreciate it 🙌 actually made 5 dry pour slabs using compacting, Burlap type water curing, with a sand wash finish, I believe I cracked the Dry pour strength code interested in hearing Mr Tylers thoughts🙌🤙 videos are on my channel 🤙
@@DiyTheGrappler I think you can make dry pour slabs in the way that you mentioned but do you think it is less work then just ordering ready mix concrete? Are you happy with the surface finish? It really depends on what you want to achieve.
@@TylerLey thank you for the response!! Been waiting! I have mentioned you in many of my videos I have made many slabs / pavers using dry pour method adding
Water curing for strength (burlap method)7 days covered then continue to water cure for 28 days
Compacting dry concrete/vibrating side of forms of to reduce air voids and pockets
Been using sand mix 5000psi to top the dry pour to get a clean sand wash finish
I ultimately want to make a driveway using the dry pour method along with curing and compacting to eliminate potential problems, do you think dry pour is capable of having the same or close to wet pour strength? Thank you 👍
Very good stuff, this!
Thank you so much!
This is great...of you're in a perfect world. The sad reality is that most important question you need to ask about a supplier is: Do the f*in' care at all? Ordering concrete in a rural area but from a plant close to the job (about 6 miles) I asked for a 4" slump for the first pass on a pump job. We were then going to add water to that truck to bring it down to a 6" slump to finish the pour (across the rest of the trucks which were then to be sent as 6"). BS! I have mixed and poured (wheelbarrow or electric drum) hundreds of 80# sacks on small projects...this stuff was a loose as I've ever mixed for small flatwork or piers in holes...and too loose for the forms. By the grace of God, the forms held (there is prayer in concrete). After the pour, I spoke w the plant...first, they sent the whole job as a 5" slump on the tickets, second, the drivers wash the entry to the drum after loading which adds water to the mix, makingbit looser. Ugh! I can't speak for urban areas, but in rural areas, across all disciplines I've encountered, finding people who care about details and doing things correctly is the biggest challenge. As for concrete, the next time I order concrete from, well, any plant, I will have a slump cone. It's a miracle my forms held w the runny snot I got delivered. The point behind this is: you can order filet mignon, but if the cook thinks you don't know the difference (or if the cook just doesn't care), you may get Salisbury steak.
Nice!
Thank you!
I usually have my structural engineer give me the properties needed, I send that to the plant and they create a mix design which I send to my engineer to approve.
You need to understand the engineer has never once had a mag in his hand. Get more involved to make it easier on the crew.
@@rhett7337 I agree with Rhett. If you make it easier on the crew you will get a better product.
You're making blue collar smarts into rocket science.That engineer isn't really needed unless you're really green..Like asking an electrical engineer if you should use a 14 or 16 gauge extension cord for a hair dryer
Tyler, I am seeing an over whelming amount of videos about 'dry pouring' concrete. Not only is everyone on youtube doing this breathing in dangerous dust, but they are walking in the dry mix with their flip flops! Can you please debunk this!!!!
If you don't really care about performance or appearance then I think it can be ok. It is basically expensive stabilized base. I will see if I can get my class to do a project on it coming up.
👍👷🙏
Thank you!
Ordering 1.2 times more than you need,much less 1.6 is ABSOLUTELy NONSENCE...HE must be rich..and suggesting you use a shhoot!How else?no mention here of so many factors.!
It is pretty common in the concrete practice to order more of anything then what you need.
Han shot first
Totally agree!!!
No mustache huh...
None for me.