A Study on the Fresh and Hardened Properties and Cost-Analysis of High-Volume Fly Ash Self-Compacting Concrete
Concrete was prevailed in construction since ancient times. Over the years, numerous developments have been carried out to upgrade the concrete. One such development is Concrete that self-compacts and binds to itself is known as Self Compacting Concrete (SCC) and is used in areas where reinforcements are crowded and conventional compaction is difficult. However, the increased use of cement has led to a significant amount of CO2 emissions into the atmosphere. The cement manufacturing industry alone accounts for 5%-7% of global CO2 emissions. To reduce these emissions, pozzolanic materials can replace cement in concrete. By employing fly ash (FA) in SCC is common because it enhances the ability to flow. To further reduce the carbon footprint from cement production, High-Volume Fly Ash Self Compacting Concrete (HVFA SCC) uses more than 30% FA in place of cement. This increases the durability of concrete by reducing chloride penetration but reduces compressive strength. The addition of FA increases the rheology too. The work aims in understanding the rheological and hardened state behaviour of HVFA SCC and comparing the cost of construction of HVFA SCC with Normal concrete.
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