The Types of Concrete Cracks and how to prevent the cracks 

Such a great video to use for studying for my Construction Materials course. Much appreciated!!!

Thanks Brendan for very relevant topic. Keep going.

Can we have a video explaining curing for casting in-situ concrete, such as padstones for steel beams or load-bearing walls filling? To answer questions such as optimal way to respect curing phases considering onsite constraints, handling formwork for vertical/horizontal elements and time to wait before drilling to install anchors (i.e. tension/shear forces application)?

Very interesting . i've been asking the following question for years and have yet to have a definitive answer . When i lived and worked in america it seemed as though all concrete cracked hence the saying " all concrete cracks " . Then i moved to germany where over a period of twenty five years i built two houses . NONE of the footings , slabs or walls have cracked yet . one house is about twenty years old and the current one is 8 years old . in both cases there is not the slightest of cracks hairline or otherwise . i am completely baffled . i don't know what the mix consists of but i do know the following - 1- slabs are eight to ten inches . walls are about eight inches . 2- rebar plus rebar mat is used and heavily supported . 3- the concrete is not ' finished . it is leveled and left very rough. 4- when hard , it seems to be much softer than what i was use to in America . a small hammer drill can pierce the concrete with much greater ease .

Great video...😊❤

Very good summary, thanks

Thanks for all the great information nice video

Hey Brendan, nice video as all ways. I’ve been watching your channel for a while and I’m always learning something new from you. I’m a high school senior aspiring to be a structural engineer and I wanted to ask you a question regarding learning more about the structural engineering career field on your own. Do you know of any good books/websites that explain more on what structural engineering entails, it’s past advancements, the way the business operates maybe and even emerging practices. I was just curious. I’m only in trigonometry right now so I’m pretty sure I shouldn’t read something thats overly technical just fyi. 😅

👍🏼👍🏼, these crack control measures are good practice to help prevent future corrosion problems, especially for elevated slabs.

Brendan, thanks for sharing... Brandan, as you may gather from my channel, I am crack crazy, interesting you talk about the tension failure, I also talk about this and have a backlog of videos on this subject; I am leading up to videos showing the load testing is defective, concrete beam testing is done on a non-pinned end connections and this alone makes it a defective test that we can use for strength capacity extrapolation... Then we have the point loading to failure, to me, this would be good for determining shear failure but, they are not covering the interactions between multiple spans and balance stresses (rebar across a shear head for example)... I know this is confusing to read +/- but, it is a very complicated subject. As far as the surface and bleed water; I like to tell people that the ingredients are like a soup and once the aggregate settles to the bottom of the 🍲 pot, it displaces the water in the soup to the top (bleed water), just like in a soup (you mix the ingredients and you have a nice mix but once the soup stops being mixed, it takes a while for the slump interaction to displace each other (the agregates come to "rest")... The evaporated bleed water is on the surface, and "not for free" (bleed water displaces internal to some concrete paste and once evaporated leaves the "river of cracks" (crazing, etc .)... This is why it is to have a "stable soup ingredients", one that has the least amount of displacement, equals low slump/w.c.ratio. We also have cracks from the heat created during the making of the final set of the mortar (notice, I did not say concrete = thermal reaction happens in the mortar BUT, is increased and decreased based on water temperature, ambient temperature (exposed area of concrete), stone temperature, sand temperature, other additive temperatures, ground surface temperature and of course if plastic is used on the base (forcing all bleed water to the surface)... Compaction of concrete was done back in the day and higher slumps were used for placement... the compaction forced the soup ingredients to the bottom and the water to the top (it was literally scrapped off and final elevation was evaluated)... It was a skill to get your elevation correct with the compaction but it allowed for speed in placement of concrete and also kept the materials cooler on those hot days, with the extra , initial water added for placement ease (think of all those 1930s sidewalks in New York that are still not cracked yet; had high water content and minimal air entrainment). This is my incomplete, short version. Hope it sparked you up and looking forward to your next video. Kai PS Brandon, remember, Newtons third law... the tension is not linear...

Great info as always

Was in process of buying a brand new house with LGI a day ago and when I saw the brand new house already had the cracks I was so scared because based on the reviews the house will end up having foundation issues. I think it's crazy for a brand new house to have such issues. Any advice? Thanks.

I'm also interested in the topic thank you so much I would learn .

You don’t want to pour anything more then a 5” slump if it get to you on a 3” slump u can add water

Hi Brendan. I hope you are doing good Please make a video and make list of topics. That structural engineer need to cover .. Like starting from Shear and moment. Just make a list... It will be very helpful. And how can i talk to you. I want to discuss and get suggestion from you

Hi Brendan. Great video. Appreciate the content. Being an aspiring structural engineer and early on in the field I would love to connect with you and request for some advice on some topics in design I have been struggling with if thats okay? Rohan Sar

Please do you any suggestions about the book that has information about RC STRUCTURE or the topic of today

Is there any chance I can send a few pictures of my new concrete. It has a lot of cracks that started within the first week. I would love an opinion on the quality of work

bruh i wish i could just have a talk with you and ask every single question I've got regarding all topics of structural engineering.

How common is it in domestic construction for builder to be putting up frame without curing concrete much (or at all) ?

Thanks

So, what the treatment plan when you see the concrete creaking in the old building?

how do you do saw cuts to minimise shrinkage cracks on a suspended slab?

aggregate does not shrink though ?

Pls answer linkedin

⭐️⭐️⭐️⭐️⭐️⭐️

Please, check your LinkedIn. Thank you.

I’ve mastered driveways. It is possible to get zero cracks.