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/Metamaterials

Graphene key to growing 2-dimensional semiconductor with extraordinary properties August 30th, 2016

A promising route to the scalable production of highly crystalline graphene films August 26th, 2016

Graphene under pressure August 26th, 2016

Semblant to Present at China Mobile Manufacturing Forum 2016 August 25th, 2016

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

University of Akron researchers find thin layers of water can become ice-like at room temperature: Results could lead to an assortment of anti-friction solutions August 30th, 2016

Nanocatalysis for organic chemistry: This research article by Dr. Qien Xu et al. is published in Current Organic Chemistry, Volume 20, Issue 19, 2016 August 30th, 2016

Continuous roll-process technology for transferring and packaging flexible LSI August 29th, 2016

Meteorite impact on a nano scale August 29th, 2016

Construction

New flexible material can make any window 'smart' August 23rd, 2016

Cement design should take into account the water confined in the smallest pores: A researcher at the UPV/EHU-University of the Basque Country is participating in the study of the stresses of confined water in the micropores of cement at extreme temperatures August 11th, 2016

Nothing -- and something -- give concrete strength, toughness: Rice University scientists show how voids, particles sap energy from cracks August 8th, 2016

Lucintel identifies and prioritizes opportunities for alumina trihydrate (ATH) fillers in the global composites industry August 3rd, 2016

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







Car Brands
Buy website traffic