via dailynewsegypt.com
Analysis of material’s molecular structure leads to a new formula that could cut greenhouse-gas emissions
Concrete is the world’s most-used construction material, and a leading contributor to global warming, producing as much as one-tenth of industry-generated greenhouse-gas emissions. Now a new study suggests a way in which those emissions could be reduced by more than half — and the result would be a stronger, more durable material.
The findings come from the most detailed molecular analysis yet of the complex structure of concrete, which is a mixture of sand, gravel, water, and cement. Cement is made by cooking calcium-rich material, usually limestone, with silica-rich material — typically clay — at temperatures of 1,500 degrees Celsius, yielding a hard mass called “clinker.” This is then ground up into a powder. The decarbonation of limestone, and the heating of cement, are responsible for most of the material’s greenhouse-gas output.
The new analysis suggests that reducing the ratio of calcium to silicate would not only cut those emissions, but would actually produce better, stronger concrete. These findings are described in the journal Nature Communications by MIT senior research scientist Roland Pellenq; professors Krystyn Van Vliet, Franz-Josef Ulm, Sidney Yip, and Markus Buehler; and eight co-authors at MIT and at CNRS in Marseille, France.
“Cement is the most-used material on the planet,” Pellenq says, noting that its present usage is estimated to be three times that of steel. “There’s no other solution to sheltering mankind in a durable way — turning liquid into stone in 10 hours, easily, at room temperature. That’s the magic of cement.”
The Latest on: Green cement
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The Latest on: Green cement
- Microsoft lays foundation for green building materials of tomorrowon September 28, 2023 at 8:12 am
Strengthening the market for low-carbon concrete The need for a competitive market for green concrete and steel was reinforced in an open letter signed by the four largest datacenter companies that ...
- Microsoft is a guinea pig for climate friendly concrete as it paves the way to greener data centerson September 28, 2023 at 8:03 am
Microsoft contractors mixed test slabs of lower-carbon concrete at the site of a new data center in Quincy, Wash. The mixes included a limestone produced ...
- POINT.P and Hoffmann Green Sign a Structuring Partnership to Distribute Clinker-Free Cementon September 25, 2023 at 11:00 pm
Hoffmann Green Cement Technologies (ISIN: FR0013451044, Ticker: ALHGR) ("Hoffmann Green Cement" or the "Company"), an industrial player committed to the decarbonization of the construction sector, ...
- Hallett Group’s $125m green cement project the ‘jewel in the crown’on September 24, 2023 at 11:04 am
Building and construction materials supplier Hallett Group is weeks away from breaking ground on a landmark facility in regional South Australia, designed to produce low-carbon ‘green cement’ using ...
- UltraTech, Dalmia push ahead with a concrete plan for green cement. But are there any takers?on September 22, 2023 at 1:51 am
India is the worlds largest cement producer after China. Globally, the cement industry is among the top industrial emitters of CO2. While Indian cement companies are looking to reduce their carbon ...
- Green Cement Market Latest Innovative Growing Trends and Forecasts from 2023-2030on September 18, 2023 at 7:58 pm
Green Cement Market (CAGR of 9.28% 2023 - 2030) | No. of pages: [121] | market size, share, and industry analysis, By Type [Fly-ash Based, Slag Based, Recycled Aggregates, Others], Application ...
- Cement companies' green power mix likely to rise to 42% by FY25on September 18, 2023 at 6:05 am
Major cement players are looking at reducing their emissions by 15-17 per cent over the next 8-10 years by increasing the share of blended cement, which uses less clinker and, consequently, less fuel, ...
- Cement cos' green power mix likely to rise to 42% by FY25: Reporton September 18, 2023 at 5:37 am
Cement companies' green power mix is likely to jump to 40-42 per cent by FY25 from 35 per cent in FY23, which will lead to savings of 140-160 basis points by way of lower energy cost, a report said on ...
- Cement companies' green power mix likely to rise to 42 pc by FY25: Reporton September 18, 2023 at 3:58 am
The cement industry is highly energy-intensive and is one of the largest consumers of coal as primary fuel -- only behind iron and steel. Electricity requirement of the cement industry has ...
- This green cement locks in carbon dioxide as it cures instead of releasing it into the airon September 15, 2023 at 2:08 pm
Every year, the production of cement accounts for 8 percent of global CO2 emissions. If the cement industry were a country, it would be the world's third-largest emitter of CO2. One company ...
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