Flexural strength

• TORONTO, Jan. 9, 2024 /PRNewswire/ - Black Swan Graphene Inc. ("Black Swan") (or the "Company") (TSXV: SWAN) (OTCQB: BSWGF) (Frankfurt: R96) is pleased to announce that its partner, Nationwide Engineering Research and Development or "NERD", the maker of Concretene, a graphene-enhanced concrete admixture ("Concretene"), has executed a development agreement with Roger Bullivant Limited ("Roger Bullivant").
• Roger Bullivant is part of Soletanche Bachy, a foundations company and part of VINCI, the French construction, infrastructure and energy group of companies with €60 billion in annual revenue.
• In March 2023, Black Swan, NERD and ARUP Group announced strategic partnerships, part of an integrated supply chain, to accelerate the adoption of graphene-enhanced concrete globally.
• Black Swan and NERD also formalized an equity swap and a supply agreement.

• This, as the minister noted, is due to the precarious state of flexible pavements in the country.
• A rigid pavement is a road surface overlaid with reinforced concrete, while a flexible or asphalt one has a bituminous (tar) overlay.
• Asphalt roads are the most common type of paved roads in Nigeria.
• However, there is no data to speak categorically on whether concrete pavement is better than flexible pavement for Nigeria.

Comparison of flexible and rigid pavements

• Unlike flexible pavement, rigid pavements have a high flexural strength, making every layer virtually immune to bending under pressure.
• Flexible pavements usually last for 10 to 15 years while rigid pavements last for 25 to 30 years.
• Extreme weather like high temperature affects flexible pavements but not rigid pavements.
• Noise pollution is also high on flexible pavements but lower on rigid pavements.

The way to go

• Consequently, a life cycle cost analysis should be carried out before choosing a pavement type.
• A well-designed road will provide the intended level of service at an acceptable level of safety.
• Concrete roads have a heavy construction cost, longer construction period due to the time required for curing, and longer repair times.

Hussein Mohammed does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

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• The partnerships between Black Swan and NERD, and between NERD and Arup, are intended to enhance expertise and create an integrated supply chain aimed at accelerating the adoption of graphene-enhanced concrete globally.
• The product has been developed in partnership with The University of Manchester's Graphene Engineering Innovation Centre ("GEIC").
• Black Swan is a producer of low cost and high-performance graphene powders, derived from graphite, ideally suited for the concrete industry.
• Black Swan's graphene technology was originally developed by Thomas Swan & Co. Ltd. and advanced internally until the launch of Black Swan in 2021.