Indian startup CarbonStrong has developed an innovative low-carbon binder designed to replace 40-50% of cement in concrete. Leveraging processed fly ash and proprietary additives, the technology aims to significantly reduce CO2 emissions from cement manufacturing, a major contributor to global warming and India's climate goals. Founded by IIT/IIM graduates, CarbonStrong has completed successful pilot projects and is planning to scale up production, potentially offering cost savings and environmental benefits to India's construction sector.