What is fiber reinforced concrete?
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- เผยแพร่เมื่อ 16 มิ.ย. 2024
- Fiber reinforced concrete (aka fibre reinforced concrete) is an essential method of reinforcing for complicated and thin members. However, fiber reinforced concrete can also be very helpful to maintain small cracks. These small cracks help with both the aesthetics and the durability of the concrete. The video explains the use of both macro and micro fibers. It explains the differences between these two materials and also shows their performance in concrete. Examples of plastic fibers, glass fibers, steel fibers, and polypropylene fibers are also shown in reinforced concrete.
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I made an updated version of this video. Check it out here!
th-cam.com/video/WHQViwxqxdQ/w-d-xo.htmlsi=AlbzwdNrPQfpDpVR
I'm developing my master's degree tesis on this topic and academic stress helped to make me forget the beauty of this topic. Your passion, sir, gave me a fresh breath and remainded me this is AWESOME. Thank you for your video and keep on being a passionate concrete freak!
Thats how you do a presentation; enthusiasm, clarity and no boring monotones. This Guy is so engaging, Thank You.
Thanks Tyler for your quality videos. I am a retired contractor now full time artissn / craftsman in deep play with cementious materials. I just recently did your channel and would like to express grattitude for your enthusiasm and willingness to share. Thanks
Great video as usual! informative, brief and super interesting! Thanks Prof. Ley for sharing your knowledge and passion!!
I only wanted to see what a fiber cement looks like but I ended up watching the entire video lol. This is so informative and the way it is presented really made me interested. Thanks for this!
Hi, Mr. Ley. I have not used fibers in my projects, but for my civil engineering materials end of semester presentation, I may summarize some of the current research of fiber reinforced concrete. Your video has inspired me and helped me to select my topic.
Tyler, it's been too long, glad to see this post AND it's on a question I ask you about quite awhile ago. Awesome video, worth the wait! Thanks for continuing to teach us about concrete. Never would have guessed how complex and interesting a subject, concrete is. Can't wait for more!
Thanks for being patient William! I am glad you are enjoying the videos. Basalt/FRP rebar coming pretty soon.
Your way of teaching is amazing.. Really love it..
Wow, you are genius, the way you explain something becomes super easy to understand.
Thanks so much for this video Tyler! I've been waiting for something like this and just happened to catch it within minutes of going up.
Glad you liked it!!!
Hey Tyler, here is AU I came across fiberglass woven mat where the woven strands are every 2mm and is a 6 oz mat. I've used these in garden bed walls that can be walked on with heavy wheel barrows. 20 years on and not a crack. Basically I lay 30-40 cm of concrete then the first mat, another 40cm concrete and second mat and keep going to the relevant height required.
Thanks to your videos some concepts concerning concrete just become easier to understand :)
Thanks again Tyler for the great videos!
Love the video!!! Thanks for getting the word out on fibers! And FORTA is always willing to help with tips on finishing . We have seen many amazing finished floors over the years... that still look great!
Thanks so much for the comments. Also, thanks for providing fibers for my students to use in my lab. It would be cool to learn more about finishing with fibers.
@@TylerLey We have some finishing videos, but nothing as cool as yours! And many are out dated. We need to step it up...
Best channel! Thanks a lot for the knowledge!!
Great video, very helpful. Thanks for posting.
I've had a garage floor that needed to make up a 1/2" gain in height- we mixed in fiber (fiberglass strand type) and trowed to a smooth finish. While not directly exposed to the elements, it has had cars, trucks, etc. worked on with jack stands, etc for over 10 years. still holding up well, in the freeze/thaw climate.
Rick,
Thanks so much for sharing this success story! Do you know how much fiber you used?
Tyler, that will be a hard one, but I will try to check. it wasn't that much, because it was actually mixed by hand. I will try to find the left over packets of fiber, but I think it was roughly one ounce to 50lb dry, course sand, no klinker. I love your channel!
Now, if I can just get my Home Builder, to get this excited about fiber.
I really learned a lot from your videos.
Dude, this is the best into of any video on TH-cam! You got style. U get right i to the subject.
Thanks alot for that 101- couldnt have hoped for a better explanation of FRC!
Thank you for your good information, we're keep an eyes for these good knowledge soon.
Thanks for this video. Really informative!
thank you dr ley . repeat and repeat and repeat . i must watch this 1000 times.
Thank you for the awesome picture.
Thanks for this video it has helped me advise my customer accurately
Great!!!
We casted around 12 column using fiber reinforced concrete in both pcc and rcc. The fibers were actully prety coool. The cracks were minimised and ductility improved . We used 3d hookedend fibers.
clearly explained, thanks. I am trying to decide if i should use steel mesh or fibers in my 10 inch tubes for the footers under my shed. I am in savannah, so there is no frost line, and my footers are not very deep.
Thanks a lot Tyler. Love the way how you make complex topics simple.
I had one question though. What if we use Glass fibre mesh instead of the fibres? Will it solve the alignment problem?
Thank you so much for this video sir its really helpful to me.
I'm addicted to Tyler! He's so awesome!! I wanna be a concrete freak too :)
Dr Ley, I have been getting push back from Contractors especially on slab on grade application. There argument is it is challenging to finish, like you showed on your video. I like the video it is truly helpful.
Try adjusting the paste volume of your mix with fibers. Make a designated mix design with fiber built in. I find a 30-35% paste volume works well with typical macrofiber
@lackoffkgivity most of these issues can be fixed with paste volume and using clean aggregate
Also don’t throw all the fibers in at once. Do one bag at a time slowly
Thanks fir explaining about fibers. I make concrete flower pots, flowers, and crafts, etc. I put a lot of work and details in them and would like to make them stronger. Please yell me which is best to use. Many thanks!😊
your explain is very good
thank you
Thanks your videos help me alot.
Dear Professor Ley, thanks a lot for your video. Now that you talk about fibers we are making concrete, we are making concretes with Waste to Energy Ash, we use ash instead of sand and aggregates, this is big because all the ash is pozzolan. Concretes made with this type of waste are Photocatalytic meaning help breakdown air pollution and are impermeable and self-healing and yes, they have micro-reinforcement.
Careful with ash, especially fly ash from coal burning electric plants. Home Depot learned that the hard way years ago near Richmond VA when their contractor used 30% fly ash in the foundation and floor slab for a new HD store. If memory serves, some of the metal shelving posts broke through the new floor when they stocked them. The entire building was condemned and razed so they could start over.
I specified fiber reinforced concrete once. It was a pad for a portable MRI at a hospital. It was moved from place tp place in a semitrailer. I wanted to keep iron or steel away from near it because that would affect the image and the machine would have to be “shimmed” or adjusted each time it was parked before it was used.
It was my grandfather who designed this with his friend and patented it. True story however I think it’s been changed over the years because it was done with stainless steel pins when they made it
Concrete tunnel liner segments use polyethylene fiber for fire protection. It does not hold the concrete together but rather melts allowing space for the concrete to expand without as much damage.
hey Tyler. I'm a concrete finisher and so glad i found your channel. question:. why would my concrete driveway crack right next to a control joint months after we poured it. thanks.
7-VII-2021.We artist have been using fibers in our clay plaster and concreat sence the the Renaissance, today we have green strenth and fired strenth fibers, in Malta my Greath Grand father pionerded the usage of fibers in concrete back in 1906. Much more to tell you about.
I'm doing more testing but I added exfoliated graphite to my aircrete mix and it is amazing! One of my viewers asked me to do a freeze and thaw test and I'm on day three and no change or degrading in strength. It also doubled the compressive strength. Crazy!
Cool!
Graphite and Graphene are getting more economical.
@@TylerLey I made my own exfoliated graphite. It's a little dangerous but I can make quite a bit for my tests and I don't have to wait to receive it.
Hey Tyler, much thanks for all your information!
I'm trying to line a cave I have on my farm with concrete, but without using steel...
The alternative would be using the more than thousand year old method of combining wood and mud, as has proven successful in Europe, with those houses standing for over 1,000 years with only minor repairs...
Idea for you Use a drywall texture gun / hopper to blow the cement on the walls
It's called gunite/ shotcrete
Interesting! What are your recommendations for a concrete counter top, interested in the mixture recommendations.
Micro fibers= cracks 1-6 hours
Macro fibers= cracks days to years
I used to be a driver now I'm a batch man so I'm watching all your videos on concrete so I can sound smarter 😁
Gave us a lot of confidence to fill a woodfire chimney vent on steel roof. Good explanation. Can i send u a photo after the work gets over?
After learning all about concrete over the past few years from watching and rewatching your videos (among others) I'm now standing here in Costco having an aneurysm that they didn't fiber reinforce their beautiful densified concrete floor! So many cracks!!!!
Another great video in the series! Also some good concrete tech videos on Practical Engineering. Y'all both do great work and I'm looking forward to more.
Thanks James!!! It is awesome to be compared to Practical Engineering.
We like to use micro fiber on our slabs regardless we have rebar or WWM -- have not tried @ a column and beam levels before... will look to try on our next pour
Awesome video
Thanks for the helpful videos. For building sculptures, I was hoping I could shred my own recycle plastics to use as macrofibers. Any reason not to do that?
Thanks for your efforts
Thanks!
Thanks for all your videos, I am planning a workshop build and every concrete contractor has a different idea of what would be best. Educating myself with your videos are helpful through this process.
Do you have any videos or insight on how in Slab radiant heat with under slab insulation effects concrete?
Thanks again.
Thanks Dennis,
I don't but that is a good idea for the future.
thank you thank you because you respond to my questins which has been in my mind . You are really smart 100% thanks
Great content..love it
Really good video I love it >>>>>> thank you
Thanks! I have a client who wants to use CFRC cladding on a building with purposeful placed holes in the concrete. How will this affect the concrete?
Reminds me of horsehair plaster! Is there a method of aligning the fibers to control the way they will support stress? Perhaps running some sort of comb through the wet concrete in a single direction?
Hi Tyler , have you done any studies on using mica powder in the fiber concrete to improve properties ??
Can you do a video about no slump or compacted concrete? Specifically using something like roller compacted concrete for residential home building
We've been having good luck using large weave fiber sheets lain at 1" depths during the pour
That is an amzing video. Very informative. I have been doing a research latley about MDF cement which actually can be a potential solution. In addition to that, using Nano Structure cement has a greater potential which has tensile strength more than steel.
Hi
Hi, I just had a 5" fiber reinforced concrete slab poured for my future garage. Do I need to wait a MONTH to stain and seal it? Thanks so much for any information!!!
Nice!!! ( awesome as always!!)
Great channel. Thanks Prof
How can we get hold of you if we have any questions.
Hello Tyler Ley
@2:20 you said fibers do not stop the cracks from forming.
How I think of it is, macro-fibers do not stop the macro-cracks from forming and micro-fibers do not stop the micro-cracks from forming. But macro-fibers added with micro-fibers can help a lot. Micro-fibers will help the micro-cracks to not propagate into macro-cracks.
This is just my opinion. What do you think about this? Would love to hear from you. Thanks.
Any benefit to using both micro and macro fibres in the same concrete?
Any advancements on best known fibres since this video was made?
Cheers!
I first saw and heard and about fibers in 1993. My understanding was that it was a replacement for concrete wire (the 6"x6" grid wire about 5' wide that comes rolled up and a pain in the ass to handle; yeah that concrete wire).?. Which is used to resist shrinkage and freeze/thawing cracks, not necessarily loads. That's what the rebar is for..? what do you say about that?
What is you thought on Helix Steel as used in Pensmore manor?
Brilliant video thanks Tyler! I've just inspected a commercial building that is made of what I think is a straw-reinforced concrete. I can't find any information online about this to help me advise the buyer. Can you help? I have photos available...
Tyler I'm a new subscriber to your channel, I be great full if you can do a video on fiberglass rebar vs steel rebar
Thanks
Very good knowledge
I love adding microfibers to all my concrete and screeds. It's a costly habit but I love it and I have used it for years now.
Great video! Have you ever checked out Helix Micro Rebar? You should! Great stuff!!
What type of fibers should I use when making concrete Atlas Stones for strongman challenges/competitions? These range in size from 10" to 24" in diameter. Was looking at Basalt and Polypropylene - either of these better than the other for an application like this? And what length of fiber - seeing 19mm, 36mm and 50mm as options from Amazon suppliers. Thanks!
Would it be smart to add a top coat of some sort of using fiber-reinforced concrete for residential floors (without any tile or other additional surface materials)?
I have an outdoor pathway, I'm using 6 sack concrete mixing myself. I would like to have these pathways about 1 inch thick. From your video's I think both wire mesh and microfibers would work best? Steps I will use: integrate microfibers in the wet concrete, pour a 1/2 inch put the wire mesh down, then pour the top coat? Is that the best method?
I worked for a company which made concrete pipes and we used fibre in the manufacture. It was called...asbestos. That was very tough cement with a very long life. (Longer than some of my colleagues)
I am using your knowledge and article to help write a paper in my materials class. Do you have any good advice for a young Environmental Engineering student? I have found your videos and background very inspirational.
I need to make some concrete plate weights for workout lifting purposes 🏋🏼. Some sold molds come with a metal loop & what appears to be plastic fibers. I’ve seen dudes use rebar. I heard of some kind of a metal mesh being used. I imagine it was 2 pieces cut to weight size, 1 placed after the initial surface layer of concrete is applied, & a second piece applied more towards the top beneath the top finishing layer of concrete. I imagine I’ll spray finish them with rubberized flex spray. I also imagine I’ll replace the pvc inserts with steel. Any suggestions if plastic or metal fibers would work better? Should I use rebar or mesh as well? I’ll definitely have to buy a scale due to additions altering dimensions of weight density distributions.
Thanks for the info 👍🏻
Nice! I really like 👍 your content!
Can you still seal micro fiber concrete. I recently had a patio poured and it has microfibers. I can see them. It is also dusting due to poor prep by my contractor. This is why I want to seal it. I greatly appreciate any response and knowledge.
You should see what they do when they go through a impact crusher. The mono fibers will fuzz up and kinda float when they turn loose The steel ones separate more and when they come under the magnet it looks like it’s raining needles
I am planning to make a small drainage. 50 ft in length, 6 inches wide, 2 inches side wall, and 1 inch thick. Do i need these fibers or should i just use 1"x1" wire mesh?
Would you recommend fiber mesh for patio, driveway and walkway?
Hey Tyler! I have a question regardinf how to reinforce concrete object. Let's say I'll make weight plate with 45cm diameter and 5cm thickness with hole in the center. What if I add steel chicken wire surounding the plate plus Chopped Stranded Mat fiberglass on the mixing. Will they make a better strength or just use either one instead? Thanks in advance.
Brilliant stuff
I need to patch several pot holes in a parking lot. The traffic is light but there is forklift, 4000Lb, and tractor trailer deliveries. Would fiber reinforce concrete say 4-6 inches in the bottom of the pothole with asphalt patch on top work? This is in a desert environ, southern Utah, very little rain and hotter than hell in the summer.
Thanks Tyler
Thanks for this professor
Thanks for watching!
I us it all the time when finishing driveways & house slabs.
I live near the beach where much of soil is sandy. Also, it is wet. I leve near wetlands, maybe 50 feet from where I wanrt to put a concrete pad for a carport/garage. ANt recommendations, tips on things a rookie like me needs to look out for in terms of fiber, or rebar. Any tips at all?
Hey Tyler, i need some help about fiber concrete. Do you know famous fiber concrete admixture product? Or famous Shrinkage reducing products?? I need it for my assignment. Please answer, thank you
Can you make any cost comparison of using various fibers and rebars?
Thank you very much brother
We are pouring a 1 to 6 inch topping slab on a WWT plant containment SOG. 130 foot x 100 foot. 4 foot high containment wall all around. All concrete has rebar, topping slab has microfiber reinforcement. Trench drain along centerlines.
About 2200 cubic yards for the slab, equipment pads and steel support pads
Thank you so much.
Can you elaborate on being careful when you finish? Is it just making sure the fibers dont stick out?
I’m a relatively new subscriber to your excellent channel. I therefore don’t know if you’ve covered this elsewhere, but I have a question about the global sand shortage.
I’ve seen beach sand vs. desert sand under a microscope and understand very well how the former is infinitely preferable for making concrete over the latter, but couldn’t excellent concrete be made with desert sand (of which there is no shortage whatsoever) plus micro fibers plus macro fibers?
also... if we put desert sand into the sea, does it become beach sand over time?
Can glass macrofibers be used in ICF wall construction to eliminate rebar, which rusts over time? Would glass macrofibers last longer than rebar?
would be happy to know the pros and cons of GFRC vs UHPC