SAN LEANDRO, Calif. /PRNewswire/ — C-Crete Technologies is developing a method for using carbon dioxide captured at industrial sources or from the air as an ingredient in its cement-free concrete, in work accelerated by a $2 million funding from the US Department of Energy.

The DOE funding will help propel C-Crete’s already eco-friendly product into the exceptional category of carbon-negative building materials, possibly the first pourable, ready-mix concrete product to achieve this longtime goal of the industry.

Our pourable cement-free carbon-negative concrete not only mitigates carbon emissions but helps reversing climate changeTweet

The CO2 incorporated into the product – whether captured from the air as the concrete cures or from industrial point sources – could be used in a diluted form, eliminating the costly step of separating it from other gases. Once mineralized in the concrete, the diluted CO2 would make the new material stronger, tougher and more durable than conventional concrete.

At the core of C-Crete’s innovation lies its patented high-performance, cement-free binder technology that uses different local materials as feedstocks. C-Crete’s binder produces almost no CO2 in its manufacturing and continues to absorb it from the air over time. Its scalability and cost-parity with conventional cement make it a viable alternative to ordinary Portland cement – a notorious contributor to global CO2 emissions.

The DOE’s support for C-Crete’s work underscores the profound impact that innovative approaches can have in the battle against carbon emissions.

“We are committed to crafting a cement-free, ready-mix, carbon-negative concrete that doesn’t just mitigate carbon emissions but actively contributes to reversing climate change,” says Rouzbeh Savary, Ph.D., founder and president of C-Crete Technologies. “Our aim is nothing short of revolutionizing this hard-to-abate, carbon-heavy sector of the construction industry.”

“Concrete is one of the most difficult materials to address within the construction industry because the way it is used often precludes other sustainable strategies such as re-use and effective recycling,” says Stuart Macalister, technical design lead at Heatherwick Studio, an international award-winning architecture firm based in London. “C-Crete are pioneering significant reductions in the embodied carbon of concrete and their continued research into alternative techniques to avoid over dependence upon a single material source, is both savvy and inspiring.

“C-Crete’s sequestration of CO2 into cast-in-place concrete is another aspect with huge potential. The consensus amongst climate scientists is that even if we do everything else right to reduce emissions, the world still needs to remove gigantic amounts of CO2 from the atmosphere. Direct-air capture of CO2 is very expensive currently, so other methods, such as those being developed by C-Crete, are vitally important,” says Macalister.

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“We need to do testing to get the use of next-generation materials like C-Crete’s right, and that requires early adopter field trials,” says Donald Davies, a developer and structural engineer with 33 years in the business, whose building in Seattle was the site of C-Crete’s first commercial pour. “It’s exciting to be a part of helping C-Crete on this important next step forward.” Davies is also chair of Building Transparency, a nonprofit dedicated to enabling the building industry to address embodied carbon’s role in climate change.

About: C-Crete Technologies is a leading materials science company committed to inventing, building and scaling up the next generation of infrastructure materials with ultra-low or negative CO2 footprints. With a relentless focus on environmental stewardship and technological innovation, C-Crete aims to address the global challenges of climate change while delivering superior infrastructure materials at scale.

SOURCE C-Crete Technologies

In a recent article titled “Why High-Speed Bullet Trains Won’t Work in the U.S. Right Now,” published in Scientific American, the author presents a pessimistic view on the feasibility of high-speed rail in the United States. While the article highlights the need for significant infrastructure upgrades, it fails to acknowledge the potential benefits and long-term value of investing in high-speed rail. This article aims to address the flaws in the argument presented and shed light on the importance of embracing high-speed rail as a transformative transportation solution.

Outdated Infrastructure and its Implications:

The article correctly points out that the existing rail infrastructure in the United States is not designed to handle high-speed trains. The tracks, bridges, tunnels, and power lines were built over a century ago for slower commuter and freight services. However, this observation overlooks the fact that high-speed rail requires dedicated tracks designed for faster speeds, similar to those found in many European and Asian countries.

The Need for Investment and Modernization:

To bring high-speed rail to the United States, significant investments are required to upgrade the aging infrastructure. President Joe Biden has recognized the importance of high-speed rail and has included it as one of the key initiatives to achieve net-zero carbon emissions by 2050. While the article highlights the financial challenges involved, it fails to acknowledge the long-term environmental and economic benefits that high-speed rail can bring.

Obstacles to Overcome:

The article outlines four key obstacles that complicate the implementation of high-speed rail in the United States. These include the need for track improvements, adherence to Buy America policies, a lack of domestic rail industry, and the need for adequate funding. While these challenges are indeed significant, they should not discourage the pursuit of high-speed rail. Instead, they should serve as opportunities to address and overcome these obstacles collectively.

Benefits of High-Speed Rail:

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High-speed rail offers numerous advantages that can revolutionize transportation in the United States. It provides a greener alternative to driving and flying, reducing carbon emissions and alleviating congestion on highways and in airports. Additionally, high-speed rail enhances accessibility, connecting cities and regions more efficiently, boosting tourism, and stimulating economic growth along the rail corridors.

The Path Forward:

Despite the current limitations, progress is being made in bringing high-speed rail to the United States. Amtrak has plans to introduce new high-speed rail cars on the Northeast Corridor, albeit with speed restrictions due to the outdated infrastructure. The expansion of tracks capable of accommodating high-speed trains is also underway, with a goal of reaching speeds up to 160 mph on 100 additional miles of track in the next 12 years.

While the Scientific American article highlights the challenges and limitations associated with implementing high-speed rail in the United States, it fails to recognize its transformative potential and the long-term benefits it can bring. While significant investments and infrastructure upgrades are necessary, embracing high-speed rail presents an opportunity to revolutionize transportation, reduce carbon emissions, enhance connectivity, and spur economic development. By acknowledging the importance of high-speed rail and working collectively to overcome the obstacles, the United States can pave the way for a more sustainable and efficient transportation future.

Read the artuicle: https://www.scientificamerican.com/article/why-high-speed-bullet-trains-wont-work-in-the-u-s-right-now/

https://stmdailynews.com/category/the-bridge/urbanism/

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Phoenix – Valley Metro and the city of Phoenix are seeking community feedback on the recommendation for the West Phoenix High-Capacity Transit Alternatives Analysis. The comprehensive study, initiated in fall 2022, seeks to identify a high-capacity transit option for West Phoenix residents.

The project team will host two public meetings and have an open public comment period to gather input on the recommended transit route and mode for West Phoenix, noted below. 

Meetings will be held on the following dates:

Thursday, September 21, 2023 (virtual)
6 p.m.
Join online at valley-metro.webex.com

Wednesday, September 27, 2023 (in person)
6-8 p.m.
Desert West Community Center
6501 W. Virginia Ave.
Phoenix, AZ 85035

The recommendation is for light rail transit on the route highlighted below:

Both meetings will provide identical presentation materials and be available in English and Spanish. View digital flyer with more information here.

Presentation materials along with a public comment form to submit feedback will be available on the project website through October 6, 2023.

Source: Valley Metro

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https://stmdailynews.com/category/the-bridge/urbanism/