Featured Research

from universities, journals, and other organizations

Laying The Foundations For A Green Industry

Date:
July 31, 2006
Source:
University of New South Wales
Summary:
Australian university researchers have developed a strong, lightweight building material that they believe could generate a thriving new "green" industry for countries such as China and India.

Australian university researchers have developed a strong, lightweight building material that they believe could generate a thriving new "green" industry for countries such as China and India.

Related Articles


Coal-burning power plants spend millions of dollars disposing of waste fly ash, a fine powder loaded with toxic chemicals. An estimated 200 million tonnes of the byproduct is generated in China each year, much of it sent to waste disposal sites on increasingly scarce land and it is also responsible for serious air and water pollution.

In India about 100 million tonnes of fly ash is generated each year. The Indian Government passed a law in October 2005 stating that a minimum of 25 percent of fly ash must be used in the manufacture of clay bricks for use in construction activities within a 50 km radius of coal burning thermal power plants. There are also restrictions on the excavation of top soil for the manufacture of bricks.

In the Middle East there are very few coal fired power stations and there is an acute shortage of durable building materials because of the lack of suitable clay, aggregate and sand. Quality building materials are imported at considerable cost. Thus, there is a definite market for high-quality light-weight building materials in the Middle East.

Dr Obada Kayali and Mr Karl Shaw of the University of New South Wales' Australian Defence Force Academy (UNSW@ADFA) have developed bricks and building aggregate that can be manufactured entirely from waste fly ash.

They say their unique manufacturing method traps any harmful chemicals, creating an eco-friendly construction material that saves on construction costs and reduces generation of greenhouse gases.

Flash Bricks are 28 percent lighter and 24 percent stronger than comparable clay bricks while the aggregate, Flashag, can be used to make concrete that is 22 percent lighter and 20 percent stronger than standard products. This results in lighter structures, shallower foundations, cheaper transportation, and less usage of cement and steel reinforcement. This also results in more slender building components and hence, larger rentable space.

They also generate fewer emissions during manufacture as they take less time in the kiln to manufacture than clay bricks.

"Fly ash comes straight out of the power station and can be fed straight into the brick manufacturing process," says Dr Kayali. "In China it is difficult to find a clay quarry or aggregate quarry close to a city. Many brick plants are idle due to lack of clay yet most power stations have some form of brick plant close by."

"There is growing interest in the country in reducing greenhouse gases, reducing chemical pollutants and dust emissions and stopping the alienation of the land. Flash Bricks and Flashag overcome many of these problems."

Neil Simpson of NewSouth Innovations (NSi), the university's commercialisation arm, says the products had won widespread praise from structural engineers.

"Because Flashag results in lightweight yet sturdy concrete, it can be used effectively in high-rises where smaller structural columns are needed to maximise floor space and in concrete bridges requiring longer spans."

The Fly Ash technology has two patents and licenses have been issued for the UK and US markets. NSi is seeking interest from companies wanting to develop the technology for China, Japan, Southeast Asia, Europe and India.


Story Source:

The above story is based on materials provided by University of New South Wales. Note: Materials may be edited for content and length.


Cite This Page:

University of New South Wales. "Laying The Foundations For A Green Industry." ScienceDaily. ScienceDaily, 31 July 2006. <www.sciencedaily.com/releases/2006/07/060731113144.htm>.
University of New South Wales. (2006, July 31). Laying The Foundations For A Green Industry. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2006/07/060731113144.htm
University of New South Wales. "Laying The Foundations For A Green Industry." ScienceDaily. www.sciencedaily.com/releases/2006/07/060731113144.htm (accessed October 25, 2014).

Share This



More Matter & Energy News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
Real-Life Transformer Robot Walks, Then Folds Into a Car

Real-Life Transformer Robot Walks, Then Folds Into a Car

Buzz60 (Oct. 24, 2014) Brave Robotics and Asratec teamed with original Transformers toy company Tomy to create a functional 5-foot-tall humanoid robot that can march and fold itself into a 3-foot-long sports car. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Police Testing New Gunfire Tracking Technology

Police Testing New Gunfire Tracking Technology

AP (Oct. 24, 2014) A California-based startup has designed new law enforcement technology that aims to automatically alert dispatch when an officer's gun is unholstered and fired. Two law enforcement agencies are currently testing the technology. (Oct. 24) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins