Add plant fibers to your mud whenever you make things and allow them to completely dry first. That should almost completely prevent cracking before you fire it in your kiln.
he most certainly knows that. he's made pottery before. but something like this, it's redundant, the massive availability and ease of filling in cracks with more clay make cracks a non-issue. there's obviously stronger, more durable kilns, but this works just as well. I mean look at what he was firing his pots with, a bunch of rocks stacked on one another.
You didn't quite get the limestone hot enough or for long enough for 100% converstion... but it's really cool seeing just any of it slake. I would the lumps IN water were I you, it's safer for slaking. Keep it up, I really enjoy your videos.
I've seen someone fish with it by putting the dry powder in a bottle with a small hole in the lid, and then dropping it into a lake. The shock of the bottle shattering was enough to stun nearby fish.
Anh ơi cho em hỏi với: 1) Loại đá anh sử dụng để tạo tô, chén sành, bắt buộc phải là loại nào vậy anh? 2) Loại đá mà anh đun với nhiệt độ cao để tạo ra vôi, bắt buộc phải là đá gì vậy anh? Thấy hay và đặc biệt quá. Em tìm trên internet thử mà không thấy.
He was very good and intelligent at chemistry and physic in the way He made quicklime (CaO). [ Limestone(CaCO3) ----high temperature--> quicklime (CaO) + CO2 ] then He Uses CaO to make Ca(OH)2 after that uses Ca(OH)2 to make light -stone-concrete: [ CaO + water -----------> Ca (OH)2 then Ca(OH)2 + burned stone + water -------> light -stone-concrete ] Wow wonderful!
Hello, @Primitive Life. I am a student and I'm going to make a presentation about lime on a conference. Would you mind if I showed your video there? It would be a great way to illustrate the theory. Thanks!!
Try layering limestone and charcoal in many layers. This should help get the heat all the way through the stone when you light the fire. You should get a better yeild.
IrishKitty1024 He throw away stones that aren't limestone. Burned limestone is CaO. He will drop it into the water and it will form CaOH. He will use CaOH for bricks and concrete or white paint.
an exothermic reaction. basically every chemical bonded to another chemical possesses energy in that bond. in this case it's calcium bound to oxygen, forning CaO. however, this is a rather "energetic" bond, and it's uncomfortable for both atoms involved. the only reason it reached that state in the first place was from them heating up the rocks, chemically altering it to form CaO in the first place. that was why they heated up the limestone and it turned white - it was no longer the same compound after heating. when adding water, it's easier for the calcium to bond to the OH- in H2O than it is with the lone oxygen bond it has - it has a lower energy requirement. (think of it in terms of gravity - a stone on a slope only needs a small push to dislodge it and roll downhill, but if you want it to go back uphill it's gonna take a lot of energy all at once. likewise, a high energy bond only requires a small "push" to get it to break and reform to a lower energy bond, but the reverse is gonna take some effort in the form of lots of heat/electricity/light.) so that water breaks up, reforming Ca(OH)2 and H2 gas. because the high energy bond was broken in the CaO and there's now a lower energy bond...that energy has to go somewhere. it is released in the form of heat, and in this reaction there's a LOT of heat.
calcium hydroxide actually. calcium dioxide would be CaO2. not... that this is going to occur, because oxygen ions have a charge of -2, and calcium is +2 in its ionic form. that means you only need one oxygen per calcium to balance the charges, in this case oxygen forming a double bond with the calcium. Ca(OH)2 is +2 for the calcium, and -1 on both of the OH-, each forming a single bond with the calcium. and the discovery of the molecule (elements are purely one type of atom - oxygen, calcium, etc.) was probably discovered like many other discoveries - total accident. i personally suspect it was first discovered by someone using limestone as a rock lining to contain their really hot campfire or kiln then it got rained on and they saw it hissing and falling apart and went "wtf?" it really wasn't until the Renaissance period and the rise of alchemy when chemistry as a science really took off. from those alchemists experiments trying to turn base metals to gold, we wound up with things like aqua regia (a mix of HCL and HNO3, called kings water because it could dissolve even so called "noble metals" such as gold and silver, which normally don't react with most acids) and philosopher's wool. (zinc oxide, produced by heating up zinc up hot in a crucible then agitating it quickly in such a way that it quickly "fluffs up" and produces a cottony looking white substance. rumored to be spun into cloaks said alchemists wore. probably not a healthy idea, even if possible.) there's still countless molecules waiting to be discovered. with over 100 elements that can bond in many different ways, and no limit that i know of for the max size a molecule can be, that's a lot of different possible combinations, so it's quite possible you'll come across some compound no one knows about yourself in your day to day life, even if it's from something as mundane as eating a salad or something.
Интересно, что он будет делать с цементом? Домик или печь, как думаешь? Ему нужно попробовать получить металл. Отапливаться или защищаться каменными стенами ему ни к чему.
Andrey Z на соседнем канале 2 тайванца или ветнамца дом построили, колодец и бассейн для сбора воды. Также из гашеной извести и песка. А вообще такое впечатление что они друг у друга идеи пиздят. А автор всех начинаний австралиец. Он вообще скоро ракету постоит.
