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India: Nuvoco has announced the launch of its InstaMix Superior Column Concrete. The product’s formulation gives it workability for up to four hours, and a strength of 6MPa within 12 - 16 hours, enabling early de-shuttering of cast columns. Nuvoco will supply the concrete in 35kg bags.

Nuvoco's ready-mix concrete and modern building materials head, Prashant Jha, said "Quality and customer experience are at centre stage for our business operations. InstaMix Superior Column Concrete belongs to the renowned InstaMix brand, known for delivering exceptional performance and quality, making it the preferred choice of customers.”

US: A team from the Massachusetts Institute of Technology (MIT) has developed a new method to sequester CO₂ in concrete before curing it. The method is based on the addition of bicarbonate of soda, which reacts with cement to produce a calcium carbonate-calcium silicone hydrate composite. The Journal of Engineering has reported that the method adds the benefits of CO₂ mineralisation during production and casting, doubling the mechanical performance of early-stage concrete. It also eliminates the effects of carbonation reactions in cured concrete, which weaken the concrete by lowering its alkalinity, which accelerates the corrosion of rebar. The method has the potential to sequester 15% of CO₂ emissions from cement production.

The team said “The pre-curing capacity of concrete to sequester CO₂ has been largely underestimated and underutilised. Our new discovery could further be combined with other recent innovations in the development of lower carbon footprint concrete admixtures to provide much greener, and even carbon-negative, construction materials.”