Great series! Very clearly presented and informative. Thank you! Some other topics I'd love to see you cover, if you're so inclined: * slip form concrete construction * marine concrete construction for building boats, wharves, and other salt water resistant structures * bamboo, burlap, wood fiber, paper re-inforced concrete * pre-cast concrete structures and techniques for joining them * avoiding cold joints, and dealing with cold joints in structures that can't be cast in one go * labor reducing techniques / tools * cement glues and epoxies and when you'd want to use them * creating floating concrete by adding expanded polystyrene, syntactic foam, entraining air
Enjoying these videos! Did a project replacing a 110 year old tank. The concrete had Smooth Rebar! The demo guys said it was just as hard to demo as deformed bars. Though it was 2ft thick concrete and lots of #4 to #6 sized bars.
Would you discuss the advantages and disadvantages of laminated ferrocement reinforced with layers of steel mesh/expanded lath vs rebar? From what I've read, the laminated ferrocement lasts longer than rebar reinforced ferrocement due to better spread of the load on the structure.
really great videos, I am taking my rc1 course this semester and these videos are a great resource thank you so much for making them. I don't understand why North Americans use units like Mpa and kN, it would make everything easier.
Tyler When you talk about "Yield" in a steel stress strain diagram, it is not loss of stiffness, it is deformation! The 2% yield point you show on that diagram is a standard point of permanent deformation.
Joseph - A sudden deformation = loss in stiffness. Classic engineering texts talk about deformations but what is happening is a change in the molecular structure of the metals that cause a loss in stiffness.
@@TylerLey I guess I have never seen that description. To me loss of stiffness is what might happen to a strand of Spaghetti as you cook it, or a piece of steel as it gets into the red hot range and begins to droop The steel specimen in the stress - Strain diagram is undergoing permanent dislocation of the grains in relation to one another. Eventually, there will be microvoids forming between these grains and as more load is applied, the microvoids will coalesce and the two ends will neck down and eventually part. Tensile failure!
Hey Tyler, We are introducing nitrogen to our mix for summer here in south Carolina. We also use carbon cure. Not sure if you have a vid on that. Thanks again for the info vids. You the man!
While this covers steel rebar, I have been wondering about the Basalt Rebar I've heard about for a few years now. While it obviously isn't common in standard construction, I understand it has a lot of durability advantages (i.e. it doesn't rust), but what are the other considerations one needs to take into account? (I assume there are drawbacks that don't get widely talked about, otherwise it would have taken over a while ago.)
Greg, Basalt rebar is not as ductile as mild steel and costs more. There are also concerns about how well it bonds to portland cement based concrete. This impacts the development length of the concrete.
researchers are working on BFRP bars as to be alternatives to steel bars. but, the mechanical property of BFRP bars are much different than steel. bonding Behavior of BFRP bars are still not completely defined. surface texture wich is on of the important parameter increasing bond behavior is stil under research. so it will take time to produce best quality BFRP bars which beat steel bars. i think steel with thick galvanized coating is best solution. thumbs up for your videos sir, appreciated
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
5 years and still dropping knowledge on us--thanks for making this understandable!
Thanks for watching!
Great series! Very clearly presented and informative. Thank you!
Some other topics I'd love to see you cover, if you're so inclined:
* slip form concrete construction
* marine concrete construction for building boats, wharves, and other salt water resistant structures
* bamboo, burlap, wood fiber, paper re-inforced concrete
* pre-cast concrete structures and techniques for joining them
* avoiding cold joints, and dealing with cold joints in structures that can't be cast in one go
* labor reducing techniques / tools
* cement glues and epoxies and when you'd want to use them
* creating floating concrete by adding expanded polystyrene, syntactic foam, entraining air
You are doing a good job Tyler. Keep it up...
Enjoying these videos! Did a project replacing a 110 year old tank. The concrete had Smooth Rebar! The demo guys said it was just as hard to demo as deformed bars. Though it was 2ft thick concrete and lots of #4 to #6 sized bars.
I really love your concrete explanation
thank u dr
Never knew the area is actually different for larger bar sizes, thanks for the info!
Thank you Tyler. I'm learning a ton.
Would you discuss the advantages and disadvantages of laminated ferrocement reinforced with layers of steel mesh/expanded lath vs rebar? From what I've read, the laminated ferrocement lasts longer than rebar reinforced ferrocement due to better spread of the load on the structure.
You should do a series for mt Copeland.
really great videos, I am taking my rc1 course this semester and these videos are a great resource thank you so much for making them.
I don't understand why North Americans use units like Mpa and kN, it would make everything easier.
Tyler
When you talk about "Yield" in a steel stress strain diagram, it is not loss of stiffness, it is deformation! The 2% yield point you show on that diagram is a standard point of permanent deformation.
Joseph - A sudden deformation = loss in stiffness. Classic engineering texts talk about deformations but what is happening is a change in the molecular structure of the metals that cause a loss in stiffness.
@@TylerLey I guess I have never seen that description. To me loss of stiffness is what might happen to a strand of Spaghetti as you cook it, or a piece of steel as it gets into the red hot range and begins to droop
The steel specimen in the stress - Strain diagram is undergoing permanent dislocation of the grains in relation to one another. Eventually, there will be microvoids forming between these grains and as more load is applied, the microvoids will coalesce and the two ends will neck down and eventually part. Tensile failure!
Does coating the rebar affect its bond with concrete?
yes, it does ... it's being banned in most of the countries as it effects the bond strength between concrete and rebar
Awsome videos, thankyou.
Hey Tyler,
We are introducing nitrogen to our mix for summer here in south Carolina. We also use carbon cure. Not sure if you have a vid on that.
Thanks again for the info vids. You the man!
Can I use 1-5/8" unistrut instead of rebar in grouted concrete block walls?
While this covers steel rebar, I have been wondering about the Basalt Rebar I've heard about for a few years now. While it obviously isn't common in standard construction, I understand it has a lot of durability advantages (i.e. it doesn't rust), but what are the other considerations one needs to take into account? (I assume there are drawbacks that don't get widely talked about, otherwise it would have taken over a while ago.)
Greg,
Basalt rebar is not as ductile as mild steel and costs more. There are also concerns about how well it bonds to portland cement based concrete. This impacts the development length of the concrete.
researchers are working on BFRP bars as to be alternatives to steel bars. but, the mechanical property of BFRP bars are much different than steel.
bonding Behavior of BFRP bars are still not completely defined. surface texture wich is on of the important parameter increasing bond behavior is stil under research.
so it will take time to produce best quality BFRP bars which beat steel bars.
i think steel with thick galvanized coating is best solution.
thumbs up for your videos sir,
appreciated
@@iotadiary4248 Thank you for this information.
@@TylerLey
Can the Basalt rebar be bent like for 9os, 45s and 180 hooks?
@@josephkane825 yes bent ie not a big deal. you can bent it in any angle
Does it help you when people comment?
yes!
Great video minus the snot
if u do in metric units,.....................