Cement

United States launching materials ‘genome’ project

By Eileen De Guire / June 30, 2011

I Steel rebar embedded in concrete (left) and “nanorebar” made of carbon nanofibers. Credit: F. Sanchez, Vanderbilt University; ACerS Bulletin. President Obama announced the launch of a Materials Genome Initiative during his speech at Carnegie Mellon University last week when he also announced the launch of the Advanced Manufacturing Partnership. (Read our report on the…

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Leaking water infrastructure is $20B annual market, according to Lux, and growing

By / April 1, 2011

PVC watermain installation. Source: Wikipedia. At ACerS’ 2010 Ceramic Leadership Summit, one Lux Research analyst implored the materials research and business community to pay attention to the opportunities emerging in the United States (and to some extent in Europe) in the areas of municipal water and sewage treatment. She advised that we needed to spend…

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Freedonia: Demand for refractories to rise over 5% annually through 2014

By / March 31, 2011

Credit: Allentown Shotcrete Technology. The Freedonia Group, a market research firm, says that the market for refractory products generally will enjoy strong, steady growth over the next three years, especially in the Asia region and particularly in regard to China. A new study available from Freedonia says demand will grow on average 5.3 percent each…

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Bioactive cement plaster: Bioengineering in action

By Martin Grolms / March 29, 2011

Electron micrographs of the cross-section of magnesium phosphate cement-cylinders. (a) MPC-cylinder without bacteria. (b) Macroporous structure within the inner section of freshly prepared MPC with embedded R. ruber bacteria. (c) Macroporous structure within the inner section of MPC with embedded R. ruber after 19 batch cycles. The arrows mark assemblies of R. ruber bacteria. Credit:…

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Novacem’s ‘carbon negative cement’

By / March 9, 2011

  Blocks made with Novacem cement. Credit: Novacem A “green” material that has received growing press attention (at least online) in recent months is a product from Novacem that the company is billing as a “carbon negative cement.” The most recent stimulus for these stories is that in February, a New York-based consultancy group called…

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Tesla: We are close to ‘closed loop’ battery recycling with reusable alloys, slag

By / February 3, 2011

To make sure their car parts are disposed off in the most eco-friendly manner possible, Tesla has launched a new recycling strategy for its batteries, which are designed to last 7 to 10 years, or about 100,000 miles under normal use. According to a company press release, Tesla Motors has teamed up with Belgium’s Umicore…

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Video of the Week: ‘Green concrete’ composed of 70% fly ash

By / January 31, 2011

Researchers at Missouri University of Science and Technology believe that increasing the amount of fly ash in concrete up to 70 percent can result in excellent concrete in terms of both strength and durability. And it could prevent millions of tons of the waste product from ending up in landfills. “Traditional specifications limit the amount…

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NPR: Haitians take rubble removal into own hands

By / January 13, 2011

(Credit: Jonathan Pankau/Wikimedia Commons.) Last week we had about a report from researchers at Georgia Tech who show how concrete rubble from the earthquake can be safely recycled into stronger concrete using local resources and manual production and mixing techniques. As a follow-up to this, I want to highlight an NPR story first broadcast yesterday…

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Rebuilding in Haiti can be faster, stronger and less expensive using concrete made of recycled materials, says Georgia Tech group

By / January 4, 2011

Credit: ACerS Bulletin/Reginald DesRoches It’s nearly the one-year anniversary of the huge earthquake that crumbled Port-au-Prince and other parts of Haiti, and, unfortunately, reconstruction has taken place only on a very small scale. The reasons for the slow pace are complicated: political uncertainties, uncoordinated plans and financing and, fundamentally, the underlying poverty of the nation…

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A method to defeat damage propagation autonomously in self-healing materials

By / December 10, 2010

a) Digital image correlation showing the recovery strain due to the shape memory effect around the crack location.b) Schematic of complete flow for the combination of active toughening with active healing. Credit Garcia, Lin and Sodano; AIP. Researchers out of the Multiscale Adaptive Sensors and Structures Lab at Arizona State University have developed an interesting…

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