The US Patents Office awarded two new patents to Rutgers, The State University of New Jersey, that describe sustainable concrete products that cure and harden by consuming carbon dioxide (CO2) instead of water.1,2 The commercialisation of the products is occurring under an exclusive licensing agreement with Solidia Technologies, a New Jersey-based start-up developing sustainable building materials that can reduce the carbon footprint of concrete products up to 70%.
Solidia Concrete is manufactured using identical mixing and forming processes as those used to produce concrete made with ordinary Portland cement (OPC). It is then cured and hardened by a previously patented chemical reaction between Solidia Cement and gaseous CO2.3,4 This unique aspect of Solidia Concrete curing allows precise control of the curing process, permits the incorporation of a broad range of sands, aggregates, and reinforcements, reduces water consumption up to 80%, and enables manufacturers to operate at higher speeds while minimising material waste. Solidia Concrete cures in less than 24 hours as compared to the 28 days required for OPC-based concrete to achieve full hardness.5
When the reduced CO2 emissions associated with Solidia Cement production are combined with the CO2 reacted into Solidia Concrete, the carbon footprint of concrete products can be reduced by up to 70%.
Suitable for large and small-scale applications, Solidia Concrete parts can be designed for compressive strength, abrasion resistance, efflorescence and freeze-thaw cycling resilience that are equal to, or better than, that of conventional concrete.
“Solidia Concrete can be adapted easily by manufacturers of conventional concretes, fitting into the industry's existing infrastructure and raw materials supply chains anywhere in the world,” said Solidia Chief Technology Officer Nicholas DeCristofaro, Ph.D.
Solidia's licensing agreement with Rutgers covers a portfolio of more than 50 US and foreign patents and patent applications for technologies originally co-invented by Richard (Rik) Riman, Ph.D., Rutgers distinguished professor of materials science and engineering and Solidia Founder and Board member, and Vahit Atakan, Ph.D., Solidia's R&D director and former Rutgers graduate student and research associate.
1 U.S. Patent No. 8,709,960 B2 Method of Hydrothermal Liquid Phase Sintering of Ceramic Materials and Products Derived Therefrom, April 29, 2014
2 U.S. Patent No. 8,721,784 Systems and Methods for Capture and Sequestration of Gases and Compositions Derived Therefrom, May 13, 2014
Adapted from press release by Katherine Guenioui
Read the article online at: https://www.worldcement.com/the-americas/23052014/solidia_concrete_granted_patents_238/