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Posted on 08/29/2025 12:58:22 PM PDT by SeekAndFind
Researchers from China have developed a new type of cement that does not absorb sunlight. The material developed by researchers from Southeast University in China scatters sunlight instead of absorbing it.
The team highlighted that supercool cement featured intrinsic high strength, armored abrasive resistance, and optical stability, even when exposed to harsh conditions, such as corrosive liquids, ultraviolet radiation, and freeze-thaw cycles.
A machine learning–guided life-cycle assessment indicated its potential to achieve a net-negative carbon emission profile, according to the research work.
The team also pointed out that the photonic-architecture cement achieved a temperature drop of 9.72°F (5.4°C) during midday conditions with a solar intensity of 850 watts per square meter.
The team also revealed that the material is engineered with metasurfaces. The supercool cement is designed as a matrix-directed radiative cooling material suitable for use as both a radiative cooler and a structural material in buildings for roofs and walls.
This metasurface engineering strategy offers a universal solution that is applicable even for conventional commercial Portland cement, which also takes on a surface ettringite-enrichment manner toward higher.
The researchers first adjusted the chemical composition of the small particles (clinker) that form the basic material of the cement to create a structure that scatters sunlight effectively. They then produced cement with cooling functionality by applying pressure.
Published in the journal Science Advances, the research revealed that the self-assembly of multiple-sized reflective ettringites as main hydration products toward the metasurface, coupled with hierarchical pores, guaranteed high solar reflectance (96.2 percent), whereas raw materials containing alumina- and sulfur-rich function groups leveraged inherent mid-infrared emissivity (96 percent).
(Excerpt) Read more at msn.com ...
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Replacing a slab is going to be a whole lot harder than replacing your drywall. America needs to remember the whole drywall fiasco.
Because China is so good at building construction.
Cement is a gray-green powder. I think the the word they’re groping for is concrete.
Of course the concrete will never cure properly.
Perfect for use with its vermicelli rebar.
Which USA funded university graduate school did they steal it from?
"Tofu-dreg" or "tofu-dreg project" is a term used in the Chinese-speaking world to describe a poorly constructed building, often a result of corruption and substandard materials. The name comes from the comparison to soft, mushy tofu, and it gained prominence after the 2008 Sichuan earthquake, when many newly built schools collapsed while older buildings nearby remained standing.
Can it be drilled with a Popsicle stick, like their regular concrete?
Yes, maybe they can now stop all those buildings from collapsing.
“ Which USA funded university graduate school did they steal it from?”
Stanford.
This is outright shoddy writing.
I suspect the concrete didn’t “cool” by 10 degrees, rather it heated up 10 degrees less in the sunlight because it was reflecting most of the light. The problem is that it doesn’t stop general heat saturation (if it’s hot outside the concrete is still going to get hot) this also would be bad in winters…
Sure they did.
“ Researchers from China have developed…”
Generally anything that follows these words in news reports is bs.
That’s made in China too.
but can it ALSO cure alopecia and halitosis?
Maybe they should try using some of this in their tofu dreg construction lol
Bkmk
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