Recipe for success: Recycled glass and cement

Recipe for success: Recycled glass and cement
MSU researchers have found that concrete is more durable when crushed glass is added to the cement used to make the concrete. The MSU campus has several test sites where the concrete-glass mix was tested. Credit: G.L. Kohuth

( -- Michigan State University researchers have found that by mixing ground waste glass into the cement that is used to make concrete, the concrete is stronger, more durable and more resistant to water.

In addition, the use of glass helps reduce the amount of glass that ends up in and helps to reduce which are common due to the needed to create .

The , in which about 20 percent of the cement that is used to produce the concrete is replaced by milled, or finely ground, glass, is being tested at a number of sites on the MSU campus. And, so far, the results have been pretty positive.

“Milled glass enters a beneficial reaction with cement hydrates, so basically the chemistry of the cement improves with the glass,” said Parviz Soroushian, a professor of civil and environmental engineering who has been studying the glass-concrete mix. “It makes it stronger and more durable and doesn’t absorb water as fast as regular cement.”

The test sites, which have been in existence for about three years, are located on sidewalks outside of the MSU Surplus Store and Recycling Center, south of the Breslin Student Events Center and near Fee and Hubbard halls on the east side of the campus.

“It’s satisfying to see research done in MSU laboratories have very beneficial applications right here on our campus,” said Lynda Boomer, energy and environmental engineer with the MSU Physical Plant.

The concrete doesn’t look too much different than standard concrete, Boomer said. “It’s a little lighter in color, but, for the most part, pretty indistinguishable.”

Soroushian and colleagues recently had two papers published on the durability of the mixture, including in the Journal of Solid Waste Technology and Management, and the Journal of Construction and Building Materials.

“Cement is processed at a very high temperature,” Soroushian said. “Using milled glass significantly reduces the amount of energy used, as well as CO2 emissions.”

“We anticipate that this novel practice of partially replacing cement in concrete with mixed-color waste , which is based on sound chemical principles and the pioneering laboratory work conducted at MSU, will yield significant environmental, energy and cost benefits,” said Roz Ud-Din Nassar, a doctoral student in civil and environmental engineering who also worked on the project.

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Citation: Recipe for success: Recycled glass and cement (2012, February 21) retrieved 22 October 2019 from
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Feb 21, 2012
combine that with replacing steel rebar with 89 percent lighter basalt rebar and you build lighter/larger structures with less concrete, wich at that would be glass composite concrete, make slabs of those in a prefab style and erect buildings in a month like Broad Group from china is doing.

Feb 21, 2012
I'm pretty certain that cement and concrete are 2 different types of mixtures; cement is almost always much smoother consistency with very few large particles... unbelievable poop
And I am pretty sure you are either too dumb to use google or too lazy or a concretion of both. Perhaps you are more schooled in using wax to cast 200 lb metal boomerangs?
but rebars made of sturdy bamboo would also keep each section lightweight and not subject to rust.
Ahaahaaaahahahaha!!! This is what you should expect to hear from a 'professional builder', whatever that is (ever hear of engineers??) if you ever ask. You COULD call NASA. You seem to enjoy doing that.

Feb 22, 2012
Hehee nice try paolo/richieguy/pirouette the triumverate imbecilium. Sockpuppets are so good for mutual uprating of insecure souls with low self-esteem arent they? They make everything better again.

You tried this before didnt you? Youre so dumb it makes my eyes water.

Bamboo rebar... well I stand corrected. Say did you find anything on concrete vs cement? How about lost wax molds and molten metal?
Engineers' advice are not required in the forming of cement or concrete blocks, dimwit
So you didnt actually read the info in your link? It was written by engineers.

Keep flooding and posting nonsense like you were chatting on your cellphone with your mom instead of posting in a public forum. You are a constant source of hearty amusement.

Feb 22, 2012
Hehee nice try paolo/richieguy/pirouette the triumverate imbecilium.

Well at least he no longer accuses me of being one of your alter egos.

Oh and to contribute to this argument I cite this http://www.cement...faqs.asp

Cement = the sticky stuff in concrete
Concrete = the final product

Cool stuff. I would be interested to see how this stuff fares over time compared to typical concrete which takes years to completely settle (and start cracking).

Feb 23, 2012
I signed up just to say this - Firstly: Can't we all get along? Secondly: @TheGhost - Dude, just don't reply. You know what they say about arguing over the internet? It involves a race and a mental disability.
Thirdly: Was I the only one hoping this would mean that concrete would now be multi-coloured? (FYI: Little knowledge of engineering or physics just in case anyone tries to bash my ignorance)
And, finally: Thank you Stumbleupon for showing me awesome stuff

Feb 25, 2012
"I'm pretty certain that cement and concrete are 2 different types of mixtures"
Ritchie Guy - flour is to cake as cement is to concrete. Clear you never worked on a building site mate.

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