Repair Concrete Damaged By Rusted Rebar , repair water damaged ceiling
ฝัง
- เผยแพร่เมื่อ 6 ก.ค. 2024
- In this video, explains how to repair a damaged roof caused by rusting rebar. The water-damaged roof from the beginning of the work until its completion, all steps in order from beginning to end.
► Chapters in this video:
00:00 before
00:26 After
00:43 Remove damaged concrete
01:07 Removing rusted reber
01:38 installing anchor bolts
02:45 Applying the repair mortar
04:00 installing repair mortar on panels
05:20 Removing panels
06:02 Applying plaster
07:30 finish
► other videos:
How To Repair Concrete Column and beams : • Repair concrete cracks...
Concrete beams repair : • Repairing water damage...
#concrete #repair #ceiling
How to Repair Cracks in Concrete Slab,
water damaged ceiling repair,
how to repair water damaged ceiling,
water damaged ceiling repair cost,
how to repair a water damaged ceiling,
water damaged ceiling repair cost,
How To PROPERLY Repair Concrete Damaged By Rusted Rebar (Ceilings/Walls/Floors),
Durable repair of damaged concrete,
Here in Puerto Rico we have that problem the weather conditions created and yes technical procedures. When you don’t have a lot money this the way to go. I live this kid he is a very hard working God bless him give a lot health , yes he should wear safety glasses , mask and gloves.
I want to clarify an important point that was the problem with this roof That's when it was built The concrete was not left long enough to dry The wooden panels beneath the concrete were removed after only a few days, creating a small crack between the upper and lower concrete layers, which increased over time.
But the building owner did not have enough money to remove the roof and rebuild it at this time because that would cost him a lot, so I repaired it in this state, and then the building owner would demolish it and rebuild it again. But i say the best and final solution for this roof is to remove it and rebuild it again.
Yes makes sense.
Props to you for the repair, it was well made given the circumstances.
Tcherbikologie
Sorry the roof is weakened due to the bad concrete job. But plastering over the problem only hides the problem. It does not fix it much. That layer of rebar is almost useless, probably no longer bonded to the concrete. But I'm just an architect in California, USA. Due to earthquakes and lawsuits we take concrete reinforcement seriously.
Mesh didn't get lifted.....it got left on the deck
Looks like ground slab mesh to...
Your a brave man taking that job on.......
You just forgot to clean the rust with a wire brush and treat the steel with an anti-rust product. Mortar (cement plus sand) is not resistant and does not solve the problem. The correct solution is a polymeric mortar (grout) that has greater resistance than concrete, in addition to correct adhesion.
Plaster was placed in the final layer, while the other layers were sand, cement and small aggregate + other materials But I didn't show that in the video
Thanks Brother! Greats work!
Very hard work needs lots of experience and power in plastering
Good job sir
That's hard work... respects.
thanks teacher.
Your technique for repairing a concrete ceiling is the most comprehensive I've seen. my repair area thankfully is tiny by comparison: but I will use a rust neutraliser both poured from above into any cracks I find and sprayed from below, I don't know what good it will do?. anyway much learned thank you. And as others have asked: "please wear lung protection equipment" you're young fit and bright :) your personal well-being also deserves the best attention?. (John age=80 Perth Australia) my respects.
Thank you for your words, and I am glad that the video was useful to you. I wish you the best always, and I will come to Australia soon.
Así como otros han recomendado demoler el techo y hacerlo nuevamente, me lo recomendaron a mi también. Mi papá me dijo, las casas de concreto tiene una vida media de 50 años. Pero no tenía dinero y mandé reparar el cielo raso de mi casa más o menos así como lo está haciendo, quizás con menos destreza. Sabiendo que si arreglas una casa vieja de un lado, al tiempo te va a explotar por otro. Hay que estar pendientes y verificar el cielo raso de vez en cuando, golpeándolo con un palo de madera para corroborar que no se estén formando bolsas de aire a causa de la natural oxidación de las varillas. Es muy importante, corregir la filtración de agua desde el techo y estar pendiente del mantenimiento del tratamiento que se le dé. En cuanto a terremotos, como dijo un compatriota, a mi parecer todo se cae, menos las estructuras que tienen un enmarcado de columnas de acero galvanizado o si son de madera. La estructura enmarcada en acero es muy cara. La estructura en madera para un país tropical con huracanes amenazantes todos los años, no es una opción inteligente. Así que no es tan ilógico reparar estructuras que han aguantado sismos y huracanes. Te felicito por tu trabajo. Solo una recomendación, debes usar gafas protectoras y mascarilla para trabajadores de la construcción. Que tu capataz o contratista esté pendiente de esto. No trabajes para nadie que no proteja ni considere sus empleados. Y si estás por tu cuenta, consigue el equipo de protección. Cuídate mucho. 👏👏🤗
la armadura deja de colaborar con la losa, hay otros medotodos, los que estan reparando el techo explicaron que fue mal construido, para mi el cliente no quiere gastar la plata, quiere todo rapido, no entenden nada, y los muchachos, con la mejor voluntad, hacen lo que pueden, no hay suficiente dinero por eso lo hacen asi nomas...
Excelente trabajo 👍👍💪💪💯💯
Excellent
Good work. But people should know that the strength and durability of this repaired roof will never like original. Strength may reduce as low as 50% depending on the corrosion of the rusted steel. Since there is already some factor of safety taken during construction it may last quite long. The function of steel bars is to give tensile strength and function of concrete is to give compressive strength. Once rusted, the strength is gone. This happens due to improper spacing of steel layer. Also present day steel is not manufactured properly for which they rust within few years and fall like powder. Cheap raw materials and poor rolling process is the reason for bad steel rods. British steel bridges in my town 100 years old are still in perfect condition. Cement also matters. So one should not spend huge amount to make it like new.
這個天花板可能是當地水泥師父的提款機，每五年可以提款一次。
鋼筋把水泥撐爆不是因為滲水就是水泥有氯離子，樓地板上方沒處理只重貼下方的水泥幾年後肯定整塊剝落。
Yes.@@ArkExtension
you know your area better than I do, but I'll bet quite a few of those steel bridges are actually IRON bridges. Makes a difference. :-) I have iron farm bits that sat out in the weather for decades (maybe over a century), and are barely orange. and steel that over winters sheltered under a tree into a pile of rust before easter.
@@ironsmiter Yes, correct. Cast iron resists corrosion better than steel. I am not an expert on steel, but I think bridges are not made of cast iron. Many steel rolling mills use scrap steel resulting in low quality rods. Steel making process is a highly complex process and involves some trade secrets. So most of the steel available in local market for house building are low quality and rust quickly. Every company wants to maximize profit and minimize cost of production. So steel falls down like powder after few years if not painted.
Asikkkk kreatif dan selalu semangat Amin
Nice.
Thanks for the video! I got this problem at home so will try this. Just to double check, 2 layers of render (scratch + top coat) plus skim? Or if I take it all off maybe just paint the finished rubbed up top coat render? Thanks in advance :)
This happened when you don’t use concrete spacers between the rebars and the slab formworks before concrete pouring.
اله ينور يسطا
nice
Solución estética, la verdad ya no soportará la misma carga y saldrá a flote el problema
Sí, no soportará la misma carga, pero el stand durará mucho tiempo, pero la demolición y reconstrucción es la solución final.
Simple work guniting
Cara perbaikan dak betton yang luar biasa 8:15
I have the same your problem, same ceiling with old river stone concrete support and dusty surface, I had to remove all the plaster that covered the irons, I cleaned them and applied the passivator. They advised me to proceed as a first step using structural thixotropic mortar (at least to cover the irons) for the first layer, but unfortunately it costs too much. Do you think that a common premixed fibre-reinforced plaster can withstand a thickness of 4 cm?
I advise you to mix the plaster with the fibers using the method shown in the video from minute 4:00 to 5:00. This is the method by which you place the plaster on the wood and then install it on the ceiling, making sure to fill the spaces well. This method is proven and is better than plaster by hand and will last for a better time.
@@plaster-work thank you, about "fibers" do you mean those wooden strips which you used to hold the concrete in place during the drying and anchoring phase? For you, can it be good a fibred bastard mortar or common fibred plaster (after having applied a consolidant and the first rough coat)? For curiosity, What are those plastic tubes embedded in the plaster of the ceiling for?
As for these plastic pipes, there were electrical wires inside for lighting the ceiling, and they were there from the beginning
As for the plaster that I put on wood panels, it is
layer 1 or 2
Sand, cement and small aggregate + fibers
finish layer sand and cement only@@gaviansoty6792
Very good job
Thanks
अच्छे से किया है भाई ने थोड़ी महेनत है
thanks you
Éviter de faire le décapage sans mettre des étais en fer pour supporter la dalle,on ne sait jamais,la dalle pourrait céder
Impressive, I think you do everything you could for such a price and making it alone. Good luck with roof.
I have another person working with me and secondly I could do a much better job than this, but the building owner has a limited budget , Have a nice day
Mi humilde opinion , en bace a mi conocimiento y viendo este video, un techo asi hay que demolerlo y hacerlo nuebamente, segun las reglas extructurales ya se debilito estos son los techos ,que en un .movimiento telurico caen en nenos de 4 segundos, , mi consejo es que no lo repellen, es muy peligroso no lo digo por juzgar ,lo digo por su seguridad, la bariila ya esta dañada y auque se remplace anclandola ya pierde la fuerza a mas del 60% del concreto, ese concreto se ve arenoso muy debil mi opinion es basada en que de donde yo soy Puerto Rico paso 2 terremotos y y muchas casas asi no aguantaron y calleron los techos es muy lamentable lo que paso cuidencen amigos yo no durmiria tranquilo hay.pero les digo son exelentes albañiles mucha abilidad ,de hecho son.pocos los que pueden tener esa abilidad de resanar techos a alto gruesor . gracias👍
How old is the first installation job of the concrete roof, or how long did it take for that rebar to completely rust out ?
15 years
Please wear a respirator or somthing to protect your lungs when grinding or working with dust
Ok I will do that next time thank you
frightening ceiling! They knew, why they have put pillars so close ^^.
Nice work! But what mortar did you use?
I just do a very small repair of a concrete ceiling at the moment and bought special mortar with really high strength.
Not sure if just kind of "common" cement mortar would be enough but for such thing I prefer to pay 30,40,50 bucks for one bag over always considering afterwards to better have done it 😅
layer 1 or 2
Sand and cement and small aggregate +with fibers
finish layer Sand and cement only
@@plaster-work thanks 👍
Bonjour
Comment avez vous traité les barres de fer dessoudées?.
Merci
I cleaned it first and then attached it with screws
At 01:38
This is because of 2 reasons. They may have used saline water,in which the salt may have been more than permitted level. Secondly the concrete did not penetrate through below the bars. And the concrete mixture may not have been mixed in the correct ratio. And now the cement plaster may not last long. Rather concrete mixture with chips should plastered on the celing and cure it at least for 18 days. Then cement plaster in correct ratio must be used for ceiling. It's better to avoid saline water for concreting.
If using pump for spraying the cement and removing the stain from the iron will help plaster better
Anyway good job thanks
Of course it would be better, but it was not available at that time - thank you
Fine
Repair ke liye labure chyie jo y sab kaam ache s janta ho
Pls make video on beam repairing
okay
You should have put chicken netting over the roof iron to hold it together more
Good job, but i am worry about longlife for that Ceiling, because I don't see you streat old rebar and concrete face. You can use Compressor air spay motar.
Thank you - do not worry, this roof will last for a long time and it depends on the method of repair
Mix the treatment in the mortar mixture
I respect mas maganda kung gumamit ng rust converter, epoxy primer, confix HV , concrete patch V para sure talaga
how many prise 10 by 10 room
Hi, what kind of concrete\plaster did you use to rebuild roof? Premixed with or without sand? Thanks!
layer 1 or 2
Sand and cement and small aggregate
finish layer Sand and cement only
@@plaster-work Did you use also adhesion promoter\gripping before layer?
yes@@Fra8541
@@plaster-work Thanks a lot! 👍
Que tiempo se deja con las tablas puestas
dos dias son suficientes
Can we remove this damage ceilling on old structure can we fix new ceiling
yes
Reason of crack on roof of room?
Yo quitaría todo y Plaka nueva ya no tiene arreglo eso es mi opinión pero bueno
Very hard work
Which chemical mixed with cement for heavy bonding
addiBond
For the money 100% effective, the only thing i would do differently is adding new rebar all around the roof to reinforce the already weaken steel
good solution
Eso ya no tiene remedio, todo trabajo es en vano ya que el hierro está totalmente oxidado y corroido.
Si se soluciona el asunto que provocó esto, el problema no volverá a aparecer.
This is happenings because of not providing enough gap/ coverage for the steel rod at the bottom of the slab.
Rather plastering the zone it is better to cast that zone by mincro-concrete by some holes from the top. Don't forget to shutter that zone very well and use a bonding agent on old concrete. Thank you.
The ceiling is not strong enough to make a garment from above
very dangerous..the steel structure has already been damaged..it is better to tear down the roof and it does not make the owner spend money..I don't want to see that house in an earthquake OMG
Of course, it is better to demolish the roof, but this will cost the owner a very high cost - this area is not exposed to earthquakes
@@plaster-work Not fixing it properly will cost the owner more in the long run, unless he plans to abandon the house before it happens (it is not predictable).
@@plaster-workwhile filling concrete the bars have almost touched the plates below spacers atleast two inches above plates should be kept this type of repairing is very dangerous the reinforcement has already left the concrete the span of roof is also large it may collapse any time
❤
Es preferible cortar todos el acceso oxidados y colocar nuevos con soldadura
Cortar todos los enchufes no, porque el techo se debilitará aún más, es posible añadir uno nuevo al lado.
So he didn't have the money or was too cheap to spend the money? Although you do good work for him, the safest solution would be a full replacement done properly this time as you mentioned.
Of course, the best solution is to rebuild the roof again
Whether professional services is available in Kolkata?
Unfortunately, it is not available
sounds promising work .unfortunately this is going to be temporary . corrosion is DANGEROUS ..
This repair will take a long time because I have repaired something similar for more than 10 years and it has not collapsed yet - but the best solution is to rebuild.
Concrete Pouring k doran Jab concrete covering Tek na ho tu phir estra issue samne ati Hain.
probleme de granulation de l'ancien beton et d'espacement des tiges par rapport au cofrage
Malheureusement, ce toit n'a pas été construit selon les règles structurelles correctes.
海砂屋就是海砂屋....補完過不久還是繼續崩...
事實並非如此，但它的使用壽命很長，具體取決於維修類型
Protect your eyes!
The glasses I wear protect my eyes thank you
I don't know where you are but I hope that structure is not in an quake zone as I would not trust it. Where ever that original crack that caused this damage was I would add a heavy beam.
Do not worry, the area in which the building is located does not experience earthquakes
عمل جميل ولو انه متعب ويتطلب مليص محترف ويجب ان يضيف لخلطة المونة الاسمنية مادة لاصقة حتى لا تسقط اثناء العمل ...وكان من الافضل اضافة حديد تسليح جديد بدل الحديد المتآكل ...عمل جيد على كل حال ...مهندس
Did you replace the rebar?
in some places
How is it ok to repair the concrete part of the ceiling with plaster?
this repair not plaster only = layer 1 or 2
Sand and cement and small aggregate
finish layer Sand and cement only or plaster
What is the name of that brush
Wire Wheel Cup Brush
how my god, that needs a demo.
?why
Ma prima di ripristinare con il cemento rapido e dopo aver grattato i ferri d'armatura non bisogna trattarli con materiale antiruggine? Mi occupo di questo lavoro, e l'antiruggine è fondamentale per fare si che nei mesi successivi il cemento non si gonfi a causa della nuova ruggine e si stacchi di nuovo dal supporto.
Sì, hai ragione, ma al momento non era disponibile
This is structural damage and plastering is no solution. One way of repair was putting steel or concrete I beams that are tethered thru holes in walls which appear to be load bearing clay brick walls. Otherwise install steel column next to walls. House appears not designed by engineer as I see no beams anywhere in ceiling.
The plaster will protect the rest of the ceiling so that it does not fall completely - Secondly,
the walls are weak because hollow block bricks were used from the inside In building walls
- But the best solution is to rebuild again
Where r u based?
Delhi , NCR??
No, I am not in India
Best way to construct a new one , not reapairing
i agree with you
Sounds like a song when the video is sped up
😀
🙏🙏🙏🙏💫💫💫💫💫
Any new cement sand paste won't stick and start falling within a couple of months 😢
correct The proof of this is that the roof was repaired more 6 months ago It hasn't fallen So far
Plaster does not work. Use polymer modified mortar. This is in horrible condition, requires extra support like carbon fibre.
actually , materials were applied before the plaster for strengthening, and then the plaster was applied as the final layer
Sir mera 1st floor bahut pahle bana tha aur usme pillar nhi Diya gya tha , abhi uspe 2 nd floor v ban gya hai , aur ab nichle Wale hisse me gir gya chhat , sir kuchh upaye bataiye kaise ho skta hai thik ye
Kya matlab chhat hi gir Gaya ya ground floor ka ceiling ukhad Raha hai?
How come he was not given any column?
@@chandanthakur1154 ceiling ukhar rha hai
Ceiling ukhar ke gir rha , chhat nhi gira hai. Pillar nhi to rod kaise jayega ye bataiye
Life 3yars
much more than that
Maybe high content of salt in old concrete cement 😮mixture 😮😮😅.
This building is in an area very close to the sea
I wonder if the ceiling could be permanently repaired with stainless steel bars instead of rebuilding.
This can be done in more than one way
There’s not much point as the strength of the slab has gone now for this steel. It needs to be encased in concrete that is bonded to the rest of the slab which cannot be done. What we see here is just cosmetic. It looks good, keeps the steel from rusting too much but does little for the strength of the slab.
This is temporary, once rust starts, it won't stop.
Это совсем не так. Ржавчина - это не какая-то бактерия. Если исчезли условия для коррозии металла, то химическая реакция окисления прекращается.
If the problem that led to this is resolved, it will not appear again
@@plaster-work true
@@plaster-work but how does rust stop unless it is 100% arrested? That's my concern. Good work though.
The next solution (other than a new slab) would be to drill angles and insert decking sheets. Value of steel also appreciates.
It may not be as good as new, but it can be kept from getting worse than the current situation
If the new plaster can prevent the deformation bar from being exposed to air (oxygen), iron oxide will not continue to form. Therefore, rust will not continue
Main reasons for such rusting of reinforcement bars are:-
1) Improper grain size and gradings of both coarse aggregate and fine aggregate ie gitti and reta.
2) Inadequate quantity of cement
3) Not ensuring homogeneous mixing of concrete.
4) Not maintaining water cement ratio ( less water or excess water )
5) Not maintaining proper cover while laying concrete.
6)Not ensuring that the formwork (shuttering ) is water tight. Loss of slurry is harmful.
7) Inadequate compaction during casting. Excess compaction is also equally harmful.
8) Not doing the curing by ponding for min 14 days.
Hence, employing a trained civil engineer during construction is always advisable. Though it will cost a little more during construction yet save such losses in the long run .
sure
sure
this is only a COSMETIC FIXED ,the real problem of the rebar expansion is not met , is there a leak coming from above or the allowable covering of the concrete slab is not met ? and overtime weathering seeps thru the rebars, just asking ?
There was no leakage from above, and the problem with this roof, unfortunately, was that it was not built according to the correct rules, and the best solution remains to rebuild it again. But the cost of building again will cost a lot, but it is the ideal solution
Hamara home yese hi ho Gaya hai to aapse bat karni hai
Really should treated the rebar with rust converter. This repair is gonna last a few years and start popping off.
Of course a rust converter is best, but this repair will take a more few years
Rebar is rusted when you buy it. What’s the difference?
There are types of steel bars, and they differ according to the quality of manufacturing. The higher the quality of the raw materials that manufacture the steel bars, the more difficult they will rust - and vice versa.
Used Nito bond chemical before concrete otherwise concrete work will not monolithic. This is the actual process of Repairing work
i used addiBond in this ceiling It is completely similar to the material I mentioned
Itu bersifat sementara
Besi sudah korosi
It is not temporary, it has been fixed damage
Koto din thik thakbe?
10 days
no estoy de acuerdo con este proceso
and still that roof is dangers for their people i would totally take it off and build another with speical roof bricks and nerves and much cheaper last for atleast 50year
do youwork in delhi
no
🐓 05:52
اللهم اني أسألك من فضلك
Sorry but you have to break some of the concrete and weld the rebar together, also after welding and repairing the rebars you have to use special cement for example Sika Monotop 910 for repair... Also if you really have to use an ancor, you should use a metalic anchor instead of a plastic based one.
Good materials were used, not the best, but they were available to repair the roof
Infact this will never last and strength already totally gone. Only option is to redo the whole structure.
Of course, the best solution is to rebuild, but I think this will last for years because I have repaired something similar before and it is more than 10 years . so far
rood work but???rebar stabilize concrete or concrete stabilize rebar?you secure rebar on bad concrete and .havent use antirust products.plus you must stop water enter the concrete
actually It has been stopped Water leaked before this repair
It doesn't look like it will last lont time. Should've tore it down instead of putting a band aid on it.
No, this repair will last for a long time - and we can add new with it, no ,tore it down
It is only cosmetic and would not recover the structural strength at all
It will preserve what's left of the structure so we don't let it fall, and this repair will last a long time, until the owner of the building rebuilds it
Used cheap metal rods it will not lost long
Spray it concrete