Nanotechnology Now

Our NanoNews Digest Sponsors







Heifer International

Wikipedia Affiliate Button


Home > News > Nanotechnology in cement mixers

September 9th, 2007

Nanotechnology in cement mixers

Abstract:
For the builders and engineers among you, our subject today is cement. Not necessarily a material one would associate with high-tech, not to mention nanotechnology. However, it's probably fair to say that our modern society is built on cement. Look around you and you'll find it everywhere - in buildings, roads, bridges, dams. Early construction cement (the word goes back to the Romans who used the term opus caementitium to describe masonry which resembled concrete and was made from crushed rock with burnt lime as binder) probably is as old as construction itself. So what is it? Cement, as it is commonly known, is a mixture of compounds made by burning limestone and clay together at very high temperatures. Cement is then used, together with water, as binder in a synthetic composite material known as concrete. For concrete to obtain its optimal properties it needs to harden. And that takes time. For builders, time is money and particularly in industrial settings time is a major cost issue. Time is also a safety and convenience factor, think about infrastructure repair work on roads and dams for instance. Cement manufacturers have already known that reducing the particle size of cements results in faster-binding formulations. By taking the ultimate reduction down to the nanoscale, researchers in Switzerland have shown that a one-step preparation of nanoparticulate cement with a conventional Portland cement composition results in a drastically increased early reactivity of the cement.

Source:
nanowerk.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Materials

Working backward: Computer-aided design of zeolite templates: Rice scientists apply drug-design lessons to production of industrial minerals June 17th, 2013

Discover the ‘Nanostructure Advantage’ at ECerS 2013, Booth 5: Innovnano presents nanostructured powders for high performance ceramics June 17th, 2013

Discovery of new material state counterintuitive to laws of physics June 14th, 2013

Ceramics in Paper Manufacturing including Advanced and Nano Materials: Author- Dr. Mahendra Patel, 420 pages; 32 chapters, Publ.2013 June 12th, 2013

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals

Production of Bioactive Material for Quick Treatment of Bone Damages June 19th, 2013

3-D printing could lead to tiny medical implants, electronics, robots, more June 18th, 2013

Pioneering breakthrough of chemical nanoengineering to design drugs controlled by light June 18th, 2013

New Method to Synthesize Zinc Oxide Nanoparticles with High Catalytic Activity June 18th, 2013

Construction

Mismatched materials can be tough enough: Rice University scientists analyze molecular detail of cement-polymer bonds June 10th, 2013

Iran Applying Nanotechnology in Growing Number of Industries June 9th, 2013

UNL team's discovery yields supertough, strong nanofibers April 24th, 2013

Iranian Scientists Use Nanotechnology for Waterproofing Building Materials March 29th, 2013

NanoNews-Digest
The latest news from around the world, FREE







  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More












ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project








abbigliamento uomo
Computer Accessories
© Copyright 1999-2013 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE