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ETHZ - Physical Chemistry of Building Materials
Switzerland
Registrace 27. 01. 2020
Salt Damage Overview
Video on Crystallization Pressure (0:30): czcams.com/video/qNsAmPTSj00/video.html
Video on Chemical Thermodynamics (1:28): czcams.com/video/63qMf-F6kac/video.html
Keywords: Aerosols, Atmospheric pollution, Brick, Built heritage, Capillary rise, Concrete, Crystallization pressure, Drying, Efflorescence, Evaporation, Ground Water, Masonry, Monuments, Mortar, Poulticing, Salts, Salt damage, Sculpture, Service life, Stone, Subflorescence, Supersaturation, Weathering
Video on Chemical Thermodynamics (1:28): czcams.com/video/63qMf-F6kac/video.html
Keywords: Aerosols, Atmospheric pollution, Brick, Built heritage, Capillary rise, Concrete, Crystallization pressure, Drying, Efflorescence, Evaporation, Ground Water, Masonry, Monuments, Mortar, Poulticing, Salts, Salt damage, Sculpture, Service life, Stone, Subflorescence, Supersaturation, Weathering
zhlédnutí: 50
Video
Supplementary Cementitious Materials Overview
zhlédnutí 116Před dnem
Video on Gypsum and Plaster Chemistry (2:18): czcams.com/video/KdSGRjifq_I/video.html Video on Roman Mortars and the Secret of the Pozzolanic Reaction (2:18): czcams.com/video/qsDCj6dHcyM/video.html Video on Chemistry of Natural Cement (2:18): czcams.com/video/BVlEHbRCtPc/video.html Video on Hydration of Portland Cement (2:18): czcams.com/video/M3-T3_XmMm4/video.html Pozzolanic Supplementary Ce...
Limestone as Supplementary Cementitious Material
zhlédnutí 156Před 21 dnem
Video on SCMs in the norms (1:07): czcams.com/video/B0vvT1ru_Qg/video.html Video on Pozzolanic Supplementary Cementitious Materials (1:36): czcams.com/video/8N7YwRSNDhA/video.html Video on Hydration of Portland Cement (1:51): czcams.com/video/M3-T3_XmMm4/video.html Video on LC3 (5:41) coming in the future.
Pozzolanic Supplementary Cementitious Materials
zhlédnutí 941Před 5 měsíci
Pozzolanic Supplementary Cementitious Materials
Temperature Gradient
zhlédnutí 393Před 5 měsíci
Keywords: Adobe, Air entrainers, Brick, Building Materials, Building stone, Built heritage, Cementitious Materials, Chipping, Concrete, Crystallization Pressure, Disjoining Pressure, Freezing, Frost Heave, Hoop Stress, Hydraulic Pressure, Ice, Ice lenses, Ice nucleation, Liquid Film, Mortar, Porosity, Porous materials, Saturation degree, Sedimentary Stones, Stone, Suction, Tensile Strength, Tem...
Basics of Capillary Condensation
zhlédnutí 1,6KPřed 9 měsíci
Video on Drying (9:46): czcams.com/video/YDsT9DiU9fI/video.html
Salt Scaling
zhlédnutí 369Před 10 měsíci
Video on Trapped water (0:00): czcams.com/video/AH3uyRzTWbU/video.html Video on Hydraulic Pressure (0:00): czcams.com/video/VI7zWF3fAMs/video.html Video on Crystallization Pressure (0:00): czcams.com/video/qNsAmPTSj00/video.html Keywords: Adobe, Air entrainers, Air Voids, Cementitious Materials, Chipping, Concrete, Contaminants, Cracking, Crystallization Pressure, Disjoining Pressure, Freezing,...
Crystallization Pressure
zhlédnutí 411Před 11 měsíci
Video on Trapped water (0:00): czcams.com/video/AH3uyRzTWbU/video.html Video on Hydraulic Pressure (0:00): czcams.com/video/VI7zWF3fAMs/video.html Keywords: Adobe, Air entrainers, Air Voids, Brick, Building Materials, Building stone, Built heritage, Cementitious Materials, Concrete, Crystallization Pressure, Curvature, Disjoining Pressure, Freezing, Hoop Stress, Hydraulic Pressure, Ice, Ice nuc...
Hydraulic Pressure
zhlédnutí 263Před 11 měsíci
Video on Trapped Water (0:00): czcams.com/video/AH3uyRzTWbU/video.html Video on Temperature gradients (9:21) coming soon. Keywords: Adobe, Air entrainers, Air Voids, Brick, Building Materials, Building stone, Built heritage, Cementitious Materials, Concrete, Crystallization Pressure, Freezing, Friction, Hoop Stress, Hydraulic Pressure, Ice, Mortar, Poiseuille equation, Porosity, Porous material...
Trapped Water
zhlédnutí 381Před 11 měsíci
Video on Hydraulic Pressure (0:25, 4:05): czcams.com/video/VI7zWF3fAMs/video.html Video on Crystallization Pressure (0:25): czcams.com/video/qNsAmPTSj00/video.html Video on Salt Scaling (0:25): czcams.com/video/g9BfC0N1_3k/video.html Video on Temperature Gradient (0:25) coming soon. Keywords: Adobe, Building Materials, Brick, Building stone, Built heritage, Cementitious Materials, Concrete, Cry...
Gypsum and Plaster Chemistry
zhlédnutí 8KPřed rokem
Correction: At 10:00, the labels "Anhydrite" and "Gypsum" are swapped. Video on Gypsum History (0:03): czcams.com/video/0A2jjVKtCf4/video.html Video on Thermodynamic State Variables (1:45, 8:05): czcams.com/video/fTQslkc7f4g/video.html Video on Thermodynamics of Phase Change (8:05): czcams.com/video/zYI7HqPMs2c/video.html Video on Chemical Thermodynamics (8:05): czcams.com/video/63qMf-F6kac/vid...
Susceptibility to Drying Shrinkage Stress
zhlédnutí 416Před rokem
Video on Drying Shrinkage Stress (0:00) coming soon. Video on Mitigating Drying Shrinkage Stresses (8:21) coming soon. Keywords: Adobe, Brick, Built heritage, Capillary condensation, Capillary suction, Cementitious Materials, Clays, Concrete, Condensation, Conservation, Contact angle, Cracking, Drying, Drying stress, Effective pressure, Free shrinkage strain, Humidity, Map cracking, Materials, ...
Rate of capillary rise and building material durability
zhlédnutí 769Před rokem
Rate of capillary rise and building material durability
Roman mortars and the secret of the pozzolanic reaction
zhlédnutí 10KPřed 2 lety
Roman mortars and the secret of the pozzolanic reaction
Thank you for the informative video team😊
5:35 if final concrete has 4.5% porosity then why aren't we using this material as water purification filters? instead they sell ceramic filters which are much more expensive. But with one bag of cement you can make hundreds of water filters. Why isn't cement used as water filter?
First, i love ypur videos
Banane
was ein schmutz video ich check gor nix
Thanks
nice explanation
Thank you.
Thank you.
Thanks.
I'm gonna fail this fucking test bro
If I wanted to build a stone house to last a thousand years, what mortar should I use between the stones to last a thousand years?
love from india, good video
8:48 Exothermic H < 0 Spontaneous G < 0
Nice
it was very helpful... with nice graphics
Should that reactant 2Fe2O3 be 2Fe3O4 in equation 5 (3:21)?
Good explanation
Wow ! That gets confusing really fast lol I'm going to watch it at least one more time to make sure I'm getting it right. Thank you for being so detailed with the information. And the graphics / illustrations are wonderful.
Well done ! Love the way you married the history, materials and chemistry together. Thank you. Very useful information :)
So adding hydrated lime to Portland cement could cause cracking under heat if I herd correctly
minute 3:20 the 5th equation is wrong right? it should start with 2Fe3O4 instead of 2Fe2O3?
These videos are pretty sweet. Please keep it up!
Very comprehensive and valuable informatiom
czcams.com/video/t9KKz7hgzCU/video.htmlsi=j7Im5-ZWB8VGd3l5..Noch Fragen?
Keine Ahnung, was das für Physiker sein sollen, die so einen Schwachsinn verbreiten. Es gibt KEINEN Treibhauseffekt in der Atmosphäre ! Der Treibhauseffekt beruht auf der Verhinderung von Austausch von Wärme und Luft ! In der Atmosphäre findet ständig ein Austausch statt!
great video. A huge thank you
Awesome video
Useful information keep on the good work. I’m a civil engineering student and I find your channel pleasant.
Thank you so much for educating us. I have a request, could you please post the references in the description that were mentioned at the end of the video for easy access to the audience? Thank you.
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❤ Another awesome video!
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Ti kanoun 2 ellhnes sta comms gia SCMs?
Your videos are awesome! Thank you very much for posting them! And given that I got my PhD from ETH (in geomorphology), I feel very happy that you are sharing so much knowledge with the world about the fascinating topic of cement chemistry!
May you do a video over other ancient civilizations in the mortars that they use for example Egypt and also the Incas and also places in South East Asia
It’s the same chemistry and period table the world around for 10k years. You’re either exploiting the quicklime reaction or the pozzolanic reaction or some combination of the two.. depending on your access to geology
Wood ash cement or quicklime temped with the brick dust
Great explanation sir!!!
Thanks for sharing
I like how everything is clearly explained. It's great buddy!
thanks
Good information ji sir
Good information ji sir tq so much for giving this information
Great video! I have a question regarding the superiority of the modern portlant cement. It has indeed proven itself by its wider use of course and its thermal expansion similar to the steel. Yet concrete made with portlant cement degrades rapidly and its durability is questionable. Its PPC's main ideas. It allows for extended durability as well as chemical resistance. Would you share your opinion on these facts. Also I read that the aggregate used by the romans had larger variety as well, effectively making rubble concrete.
They are being sort of dishonest in saying modern concretes are “superior”. They might be superior at generating industry, but not as a building mortar and concrete technology. The first issue is them skipping from “Roman concrete” to modern hydraulic products: by volume of use, most human structures up to 1900 are hot mixed quicklime and earth. Sometimes modified with poz. The knowledge was never Roman. The only thing Roman was industrial scale and military application…. They did pick it up as one of their technologies, as every building culture did. It was used all thru the Middle Ages in the levant, china, France, etc. never Roman never lost. Always the main technology for human scale building. Plasters, mortars, and cast things.
John Smeaton who was fully familiar with all manner of concrete chemistry and their use by craft guilds thru his recent history…. Writes from 1800, that “Roman concrete was lost”
@@KurtisHord Thank you for your reply. Some interesting points that you bring up. I would take me time to reply categorically. I am not sure if they are dishonest in their assumption of the moderns concrete superiority. I am sure that if there is any mistake in their knowledge it is due to the information sources used. Nevertheless, in school we have learned about the ancient construction methods, although to be honest I do not remember half of that, and the point of the superiority of the portlant cement was its thermal expansion and strength and compatibility with steel; These all sum for the what, I think I understood you meant as generating industry. And about the romans, they surely did not invent the concrete but the way they made it popular one. I have read that the minoans used it for baths. Interesting point you bring up with the earth, I am not sure it will make same chemical bond with the lime as lets say crushed ceramic pots, vulcanic ash whatever (As is the one found in some places in germany). But all what you say is very interesting I would like to read about it if you can recommend smth. to me. For example I have read that the romans made a sort of rubble concrete out of it, making the mixture rathe dry compacting it and puting layers of stones; And also some brick separators (in some cases as external layer) every meter or so. Very similar to the middle ages wall construction (at least the one I've seen).
@@TheTransfix so…. Understand the folks who invented engineering trades, had an agenda to say they were superior and craft practices of builders prior to them were not to be trusted. I am a builder that works with 9th century methods and materials. So I have my own agenda to promote human centered building knowledge rather than corporate or industrial
@@TheTransfix the best scholar is dr Robyn Pender and the best chemist is Nigel copsey
Easy to understand
What does graphene do for the chemical reactions? Especially for the 2D planar carbon?
Eine Frage beschäftigt mich sehr. > Warum ist es nicht möglich, die "Wunderheizung" Treibhauseffekt für die Energieerzeugung oder die Wohnraumheizung zu nutzen. > Laut Beschreibung funktioniert der Treibhauseffekt mit ca.350Watt/m2 Infrarot-Wärmeabstrahlung der Erde und den Treibhausgasen. > Dies soll eine Erwärmung der Erde von -18 Grad ohne Treibhauseffekt auf + 15 Grad mit Treibhauseffekt ergeben. > Rechnet man mit nur 10 km Höhe der Atmosphäre, heist das, 350Watt erwärmen 10000m3 > Luft um 33 Grad. > Umgelegt auf meine gut isolierte Wohnung müßte also eine 20 Watt Infrarotheizung reichen, > um die ca 500m3 Innenluft in der Wohnung ausreichend zu erwärmen. > Da ich die Innenluft ( mit der selben Co2 Konzentration wie Außen) aber nicht um 33 Grad erwärmen muß, sollte sogar noch weniger Energie reichen. > Tatsächlich bräuchte ich aber ca. 6000Watt Infrarotpanele laut Angebot vom Fachmann, > um die Wohnung zu heizen. > Ich würde mich sehr freuen, wenn mir diese Diskrepanz irgend wer erklären könnte.
thanks
Good information ji sir tq so much for giving this information
Hai sir