Skip to main content

Think tank outlines pathway to zero-carbon cement

Published by
World Cement,


Beyond Zero Emissions (BZE), a climate change think tank based in Fitzroy, Victoria, in Australia, has outlined a pathway that it says would deliver a zero-carbon cement industry in Australia. The plan forms a part of its Zero Carbon Australia series, which outlines a costs a transition plant to zero emissions within ten years.

The plan is based around five strategies. The first three deliver a zero-carbon cement industry and include switching to geopolymer cement for 50% of Australia’s supply, supplying the remaining 50% with high-blend cements, and employing mineral carbonation to capture the emissions for the remaining production of portland cement.

Geopolymer cements – made from flyash and ground granulated blastfurnace slags – are existing products that do not generate greenhouse gases during manufacture. “Therefore, zero-emission geopolymer cements are possible,” BZE said in its report.

The second two strategies take a longer-term perspective and would “enable us in the longer term to go beyond zero emissions by changing the way we build and turning our built environment into a carbon sink.”

According to BZE, by “designing structures to use concrete more efficiently, utilising high-strength cement, and replaying concrete with timber, overall cement consumption could be reduced by around 15% in 10 years.”

The is also potential to develop magnesium-based cements that absorb carbon dioxide and “would therefore have a negative emissions profile.”

In addition to outlining a technological pathway to zero-emission cement, BZE also called upon government and the Australian cement industry to support the shift to a zero carbon cement industry. This would include a national price on cement carbon emissions, including imported cement, backed up with a progressive national target to reduce the carbon intensity of cement.

Government and the construction industry procurement guidelines could also be adapted to prioritise the use of low-carbon cements and mandating their use for non-structural purposes. “Such changes to procurement would be facilitated by increasing the incentives to use low-carbon cements in sustainability rating tools,” BZE added.

Read the article online at: https://www.worldcement.com/asia-pacific-rim/23082017/think-tank-outlines-pathway-to-zero-carbon-cement/

You might also like

 WCT2020

WCT2020

WCT2020 provides a unique online forum for cement industry professionals to hear first-hand from experts through a series of exclusive presentations from cement producers and industry experts.

Find out more and register for the series »

 

 Spotlight

World Cement Spotlight with Rockwell Automation

World Cement Editor, David Bizley, sat down with Michael Tay, Advanced Analytics Product Manager at Rockwell Automation to discuss his recent article in World Cement.

Entitled ‘Smooth Sailing’, this article explains how machine learning can help save energy, reduce downtime and predict equipment failures, thus enabling the smooth running of cement plant operations.

Watch the interview now »

 
 
 

Embed article link: (copy the HTML code below):