understanding concrete.

[uki]

we all see those guy's busting 4 inches of concrete and what not, i'd thought i'd share some of my understanding of concrete. first i would like to say that there are infact people out there that use natural phenomenom to hoodwink the masses... martial illusioinists, as the term just appropriately jumped into my head. secondly i'd like to say that there are folks out there who do not hoodwink the people and use genuine skills aquired through practice and training...

first lets define concrete. concrete is a mixture of sand, cement, water, and gravel, 2B to be exact. proper strength is determined by using the correct ratios of the ingredients... too little cement or too much cement(richness) weakens the strength and integrity of the concrete. taking out the 2B gravel from the mixture and repalcing it with more sand likewise changes the mixture from concrete to mortar(which again lessens the strength), though it is still called concrete by those less informed of the actual concrete recipies... now considering what i have just told you, you can see how easily one can conjure up a seemingly hard and heavy piece of concrete that might actually just be a slab of hard mortar, it's recipie tweeked to minimize actual strength(yet from the casual observation it's just a piece of concrete). the final fact to take into account is that it takes 28 days for portland cement to fully cure, wether or not it is used in concrete or mortar... thanks for reading and have a most wonderful day... HIYA!!!

all of what i have shared with you can be verified by examining a piece of broken concrete or slab of mortar...

[Eddie]

Concrete is strong when compressed and can usually take the direct vertical pressure, but it cant take horizontal pressure and that’s why they invented re-enforced concrete.

[uki]

Concrete is strong when compressed and can usually take the direct vertical pressure, but it cant take horizontal pressure and that’s why they invented re-enforced concrete.

re-enforced concrete... no such thing. we add things like fiberglass and wire to increase horizontal strength, yet the cement itself remains the same, of course if you delve into the realm of synthetics, you may find something... you just go to help prove my point that there are many people who use natural phenomenom to hoodwink the masses do entirely to the ignorance of the people... is there any whom tout breaking 4 inch slabs standing in the vertical positions?

[Eddie]

re-enforced concrete... no such thing. we add things like fiberglass and wire to increase horizontal strength, yet the cement itself remains the same, of course if you delve into the realm of synthetics, you may find something... you just go to help prove my point that there are many people who use natural phenomenom to hoodwink the masses do entirely to the ignorance of the people... is there any whom tout breaking 4 inch slabs standing in the vertical positions?

relax dude, the post was meant to be in agreement with yours.

[uki]

relax dude, the post was meant to be in agreement with yours.

i know. abrasiveness is just a natural part of my being...

[Akronviper]

re-enforced concrete... no such thing. we add things like fiberglass and wire to increase horizontal strength, yet the cement itself remains the same, of course if you delve into the realm of synthetics, you may find something... you just go to help prove my point that there are many people who use natural phenomenom to hoodwink the masses do entirely to the ignorance of the people... is there any whom tout breaking 4 inch slabs standing in the vertical positions?

Re-enforced, ie #4 rebar helps re-enforce concrete in both tension and compression. Wire and fibermesh does nothing but help in cracking and offers no real structural re-enforcement. Now that being said the lesson in concrete does nothing for debunking breaking concrete just puts doubt on the legitimate people out there. Go to home depot and check out there blocks there is course aggregate in them and from my testing seem to be made with at least 3500 psi concrete. Smack one it hurts like a B---H. People bake blocks, coco nuts, boards and brick. They doctor their breaking material to gain students and credibility but there are still who break legitimately and even some who break unsupported standing on end.

[uki]

Re-enforced, ie #4 rebar helps re-enforce concrete in both tension and compression.

true.

Wire and fibermesh does nothing but help in cracking and offers no real structural re-enforcement.

again you are correct. these are only used for flatwork where horizontal strength is the weakest.

Now that being said the lesson in concrete does nothing for debunking breaking concrete just puts doubt on the legitimate people out there.

you catch on quick.

Go to home depot and check out there blocks there is course aggregate in them and from my testing seem to be made with at least 3500 psi concrete.

the size and type of the gravel is the key factor...

Smack one it hurts like a B---H. People bake blocks, coco nuts, boards and brick. They doctor their breaking material to gain students and credibility

these people are just not happy with themselves... they live a lie.

but there are still who break legitimately and even some who break unsupported standing on end.

i too have stated the likewise in my first post.

[Knifefighter]

... but there are still who break legitimately and even some who break unsupported standing on end.

LOL... I have yet to see the guy who does his fancy breaking demo be able to go out in the back and put his hand through a brick wall.

[Akronviper]

LOL... I have yet to see the guy who does his fancy breaking demo be able to go out in the back and put his hand through a brick wall.

Apples and Oranges, he only needs to break your rib not the front of your house (Anyways the door or window would be easier unless their just showing off).

[sanjuro_ronin]

LOL... I have yet to see the guy who does his fancy breaking demo be able to go out in the back and put his hand through a brick wall.

You need to read more comic books, they do that all the time.

[sanjuro_ronin]

Concrete is for *****s, real men use steel plate, min 3/8" thk, grade SA516.70.

[uki]

Concrete is for *****s, real men use steel plate, min 3/8" thk, grade SA516.70.

i must say... it'd be hard to pre-fab a piece of steel to break easier than normal. and then again you must'n be too hard on folks who break slabs of mortar and call it concrete... most of the time i would say it is an honest mistake.

[sanjuro_ronin]

i must say... it'd be hard to pre-fab a piece of steel to break easier than normal. and then again you must'n be too hard on folks who break slabs of mortar and call it concrete... most of the time i would say it is an honest mistake.

Typically I just go over to the Home depot and get their 2 x 8 x 16 patio slabs.
I get a bunch because, some of them break way too easy and other way too hard !

[uki]

Typically I just go over to the Home depot and get their 2 x 8 x 16 patio slabs.
I get a bunch because, some of them break way too easy and other way too hard !

home depot... now there is high tech quality. i just call in a concrete truck and pour patios and garage floors, pads, and slabs.

[TenTigers]

i must say... it'd be hard to pre-fab a piece of steel to break easier than normal. and then again you must'n be too hard on folks who break slabs of mortar and call it concrete... most of the time i would say it is an honest mistake.

you can temper steel to be so hard, that it becomes brittle.
Ever see those monks breaking the steel bars on their heads?
Watch closely and you will notice that the bar often breaks in three pieces, and that the breaks are not at the point of impact.

Also steel castings using pot metal
(which is not heavy rock music played by hippies)