Displaying items by tag: Research

Switzerland: Holcim has partnered with Bloomberg Media to launch the Circular Cities Barometer, an exploration of best circular economy practices from cities around the world. The platform aims to improve understandings of how to empower cities to become more circular. The partners will publish the Circular Cities Barometer’s first findings at the Bloomberg Green Summit in April 2022.

CEO Jan Jenisch said “Circularity is the opportunity of our time. It unlocks economic growth in a way that is climate-friendly, nature-positive and socially inclusive. My vision for construction is to build more new from the old with recycled materials in every new building.”

Australia: RMIT University in Melbourne, Victoria, has developed a new method of carbon capture, called the bubble column method. The method uses liquid gallium at 100 – 120°C, through which flue gas is bubbled. This activates the CO₂, leading to oxidation of the metal. The captured carbon accumulates on the surface of the pool.

Gallium is a by-product of bauxite and zinc ores mining. The United States Geological Service (USGS) has estimated its global reserves in these ores alone as 1Mt.

Project co-lead Torben Daeneke said “Turning CO₂ into a solid avoids potential issues of leakage and locks it away securely and indefinitely. Because our process does not use very high temperatures, it would be feasible to power the reaction with renewable energy.” He added “Ideally the carbon we make could be turned into a value-added product, contributing to the circular economy and enabling the carbon capture and storage (CCS) technology to pay for itself over time.”

The Australian Government plans to invest US$719m in low emissions technologies by 2050 under its Net Zero Plan.

Spain: Cement Science Group (CemSciG) and the University of Málaga (UMA) have received a US$50,000 donation from US-based CSA Research for their research into reduced-CO₂ cement production. The funding will continue the partners’ work at UMA’s department of inorganic chemistry, crystallography and minerology into alternative methods of cement production. Titles of their on-going projects include ‘Optimisation and Processing of LC3 Eco-Cements with Spanish Clays,’ ‘Microstructure Analyses of Limestone Calcined Clay Cements by Advanced Synchrotron Techniques’ and ‘Reduction of Cement Industry CO₂ Emissions without Loss of Mechanical Properties.’

China: Saudi Aramco and China Building Materials Academy (CBMA) have launched the Nonmetallic Excellence and Innovation Center (NEXCEL) in Beijing. The centre will leverage CBMA's expertise and resources to promote the development and application of nonmetallic technologies offering superior lifecycle cost, efficiency and environmental performance to metal-based alternatives in Chinese construction.

Saudi Aramco’s senior vice president of technical services Ahmad Al-Sa'adi said “We are excited to be part of this important initiative with CBMA, to jointly advance the use of nonmetallics in building and construction in China. At Aramco, we have been developing and deploying nonmetallic solutions within our own operations for more than 20 years as they offer superior lifecycle cost, efficiency and environmental advantages over their metal alternatives.”

Switzerland/Germany: Holcim has announced the launch of a strategic partnership with inductive charging technology developer Magment to test and commercialise magnetisable concrete technology for use in roads. The technology will power and charge electric vehicles as they drive on roads fitted with Magment. Another possible application is in industrial floors, to charge robots and forklifts.

Holcim’s Global Innovation Center head Edelio Bermejo said: “At Holcim we are innovating to put concrete at the centre of our world’s transition to net-zero. With Magment, we are excited to be developing concrete solutions to accelerate electric mobility. Partnering with start-ups all over the world, we are constantly pushing the boundaries of innovation to lead the way in sustainability.”

China: Huaxin Cement and Hunan University have started a pilot production line that uses flue gas from a cement production line to manufacture concrete bricks. The process, being tested at the Huaxin Wuxue Industrial Park in Hubei Province, absorbs CO₂ from the flue gas and uses the heat of the gas to cure the bricks, according to the Xinhua News Agency. The average compressive strength of the bricks is above 15MPa. It is estimated that a production line with a brick output of 100m/yr could absorb 26,000t/yr of CO₂.

US: Performance materials and technologies conglomerate Honeywell has entered into a collaboration with the University of Texas at Austin for the development of carbon capture systems. Honeywell has obtained a licence to use the university’s proprietary advanced solvent technology. The University of Texas at Austin will provide consulting services for the company as it seeks to develop a carbon capture system for industrial implementation using the technology. Honeywell will target ‘hard-to-abate’ CO₂ emitting industries such as cement to which to supply its system.

University of Texas at Austin McKetta Department of Chemical Engineering professor and Texas Carbon Management Program (TxCMP) lead Gary Rochelle said “We are thrilled that our decades of research has led to carbon capture technology that can significantly reduce carbon emissions. The licensing agreement with Honeywell enables us to commercially scale this in ways that can make major contributions toward zero emissions efforts to address global warming and to reduce pollutants in surrounding communities.”

India: ACC and Ambuja Cements have partnered with the Indian Institute of Technology Delhi (IITD) to develop a range of calcined clay cements with 50% lower CO₂ emissions than Ordinary Portland Cement (OPC). The collaboration will vary clinker, calcined clay and limestone levels in calcined clay cements in order to ascertain their effects on its performance. France-based Holcim Innovation Centre will fund the research.

Holcim India chief executive officer and managing director Neeraj Akhoury said "Through our extensive research and development setup, we consistently strive to develop new low-CO₂ materials for the construction industry. Calcined clay cement is one such avenue to make a significant quantitative difference in the industry and further accelerate our sustainability drive. Our academic partnership with IITD is a big step towards building a greener future and we are excited to collaborate with the best minds in the country."

The producers have previously partnered with the Indian Institute of Technology Madras (IITM) to study low-CO₂ binders with alternative reinforcements and with the Indian Institute of Technology Hyderabad (IITH) to develop smart sensing technology for continuous on-site strength evaluation of a concrete structure.

India: RHI Magnesita has opened its new Indian regional research and development centre. The centre is its fifth of its kind globally, and joins existing facilities in Austria, Brazil, China and the US.

The company is in the process of implementing a refractory production capacity expansion plan worth a total of US$53.8m. The plan consists of upgrades to its Bhiwadi plant in Rajasthan, Cuttack plant in Odisha and Vizag plant in Andhra Pradesh. It has already completed US$6.72-worth of the work with a 30% expansion at the Vizag plant. The company says that the remaining upgrades consist of both the establishment of new lines and the automation of existing ones.

RHI Magnesita India managing director and chief executive officer Parmod Sagar said “The centre will help us to better understand local market needs and to react faster to customer requirements. This is a world-class facility that will work closely with our global research and development network for local raw materials development, will provide solutions support for customer’s performance improvement projects and will support local manufacturing in the three India plants.”

South Korea: Researchers at Incheon National University have discovered an optimal conductive carbon fibre volume for cement-based conductive composites for use in net-zero energy buildings. The team reported that a 1% conductive carbon fibre content facilitates maximum energy generation from the movements of occupants and the weather against floors and walls. It also enables the storage of electricity at safe voltages. The product is based on triboelectric nanogenerator (TENG) technology.

The team published its results in the journal Nano Energy in November 2021.