PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram
Search the site

 

Get the latest FREE eResource Blasting Resource Guide Download Now

Coatings Industry News

Main News Page


Eco-Friendly Concrete Comes to Light

Monday, February 27, 2017

More items for Environmental Controls
More items from North America

Comment | More

A production process that has gone largely unchanged over the last 200 years might now be getting a green facelift courtesy of a spinoff from Rutgers University.

Solidia Technologies, founded by Rutgers professor Richard Riman and headed up by CEO Tom Schuler, report they have successfully come up with a solution to reducing the carbon footprint of cement and concrete. The technology was co-invented by Riman and Solidia's chief scientist, Vahit Atakan.

Not only has the company come up with a way to reduce the carbon emissions by up to 70 percent, but it won’t require any extra materials, equipment or money, the team says. It’s all in the technology.

It Starts with Cement

Solidia cement uses the same materials and the same processes as ordinary Portland cement, just slightly tweaked. The limestone, clay and sand are used at different ratios (less limestone). Although Solidia cement can be fired in the same kilns, the smaller proportion of limestone allows for those kilns to fire at a reduced temperature (about 30 percent lower), which results in a 30 percent drop in greenhouse gases just from that slash in energy use.
 

Solidia Technologies
Solidia cement uses the same materials and the same processes as ordinary Portland cement, just slightly tweaked.


The production of cement is responsible for 5-7 percent of total global carbon emissions, ranking it was the world’s second-largest emitter, and while this technique reduces the emissions, it also makes a financial difference.

“You have to realize that for a cement kiln, 30 percent of their manufacturing costs is energy. So, a 30 percent reduction in that number has a dramatic impact on the cost of their product and their capability to be able to compete in the market globally,” said Schuler in an interview during the Aspen Ideas Festival in 2013.

And Now Concrete

When standard concrete is made, OPC reacts with water, but that’s not the case with Solidia. Riman patented a reactive hydrothermal liquid phase densification, which means that instead of reacting with water, Solidia cement reacts with CO2, which makes an even stronger bond than in regular cement.

Since the curing process for Solidia absorbs CO2, it cuts down on the manufacturers footprint an additional 40 percent, and reduced water consumption by 80 percent. This curing process is also faster—less than a day— than the traditional 28-day period for conventional methods.
 

Solidia Technologies
Riman patented a reactive hydrothermal liquid phase densification, which means that instead of reacting with water, Solidia cement reacts with CO2, which makes an even stronger bond than in regular cement.


Although Riman invented this technology decades ago, it’s only been recently introduced into the market. He told Rutgers Today that he was just waiting for the opportune moment, when the industry really needed to start paying attention to climate change. His second start-up, RRTC Inc., is developing advanced composite materials.

“The first thing we did was show that we could make a material that costs the same as conventional Portland cement. We developed processing technology that allows you to drop the technology right into the conventional world of concrete and cement without having to make major capital expenditures typically encountered when a technology is disruptive to the marketplace,” he said.

“When you can develop technologies that are safe and easy to use, it’s a game-changer—and that’s just one of the many areas that we’re interested in pursuing.”

Editor’s Note: This story was updated Feb. 28 to clarify roles and impact of the technology.

   

Tagged categories: Building science; Carbon footprint; Cement; concrete; Eco-efficiency; Environmental Protection; Green building

Comment from Tom Schwerdt, (2/27/2017, 8:27 AM)

I am a bit puzzled by the "reacts with CO2 to cure" portion - wouldn't this limit the use to thin sections of concrete? Still neat, just limited to things like the pictured blocks and bricks. It is also not clear if atmospheric CO2 is good enough, or if you need to use a higher CO2 concentration.


Comment from Robert Bullard, (2/27/2017, 9:14 AM)

And what about its pH resilience? Or ASR? Or suitability to ready mix delivery? Or reaction to shrinkage reducing, workability or other mix tweaking admixtures? Portland cement and its various hydrosetting replacements (silica fume, GBFS, etc.) have an abundant track record of research and experience, a track than needs to be followed by this intriguing new product.


Comment Join the Conversation:

Sign in to our community to add your comments.

Advertisements
 
Aggreko
 
Portable Heating Rentals
 
Rental heaters are available for your painting/coating project. Aggreko offers stand alone or in-line heaters, ready to rent. 24/7 service, nationwide.
844-433-9802
 

 
Detail Masters
 
Overspray Removal
 
We offer professional, turnkey service and unparalleled quality!
Our process can save hundreds— even thousands of dollars. It's fast, environmentally safe and 100% guaranteed.
 

 
SEMicro Division, M.E. Taylor Engineering, Inc.
 
Coatings Adhesion Testers
 
The PATTI® accurately measures the bond strength between coating & substrate. Outfitted properly, the surface can be rough, porous, or curved & >10K psi strong!
 

 
SABRE Autonomous Solutions
 
Safety, Productivity, Quality. Robotic Blasting
 
Learn how this simple to use, field deployed, automatic robot is eliminating hazards in major confined, cluttered and complex surface preparation projects.
 

 
W Abrasives
 
Steel Abrasives from
W Abrasives
 
As the global leader in steel abrasives, W Abrasives material is the efficient and eco-friendly solution blasting with you to reach the perfect profile.
 

 
NLB Corporation
 
NLB Sure Shroud: Greater Protection and Flexibility
 
NLB’s Sure Shroud’s lighter weight and flexibility reduces operator fatigue and offers unmatched protection against high pressure hose ruptures. 10k to 40k psi rated.
 

 
Blastox/The TDJ Group, Inc.
 
Blastox® - One Step Lead Abatement
 
Sandblast additive delivered to jobsite pre-blended to eliminate hazardous abrasive wastes. Why mix, meter or apply at the job-site? Blast with ease and
Let your painters paint!
1(800)-252-7869
 

 
KTA-Tator, Inc. - Corporate Office
 
KTA-Tator
Coatings Inspection
 
Any structure, any height, any place - A qualified coatings inspector is always available. Call 1-800-245-6379.
 

 
HoldTight Solutions Inc.
 
NO FLASH RUST - NO CONTAMINANTS
 
Our HoldTight®102 salt remover & flash rust
preventer prevents flash
rust by removing surface contaminants. Contact us
for your nearest distributor.
(800) 319.8802 sales@holdtight.com
 

 
Advanced Recycling Systems
 
ADVANCED RECYCLING SYSTEMS (ARS)
 
Recycling Machines, Dust Collectors, Rapid Deployment units are time-tested and approved for the rugged industrial environment. Contact ARS today!
(330)536-8210
 

 
 
 

Technology Publishing Co., 2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us