A Study on Workability and Strength Properties of Flyash Based Self Compacting Concrete of Grade M20

Abstract

Admixtures of minerals and chemicals are mostly used in concrete as a means of achieving complete compaction, especially in cases of reinforcing congestion and a labour scarcity. Previous studies have emphasised that adding chemical and mineral admixtures to concrete gives it the desired characteristics while it's both fresh and hardened. The purpose of this research is to investigate the performance of self-compacting concrete with cement contents of 0%, 5%, 10%, 15%, and 20% fly ash. Five mixes of M20 grade self-compacting concrete were tested experimentally for both fresh and hardened qualities; the findings are compared with those of regular vibrated concrete. The following tests are taken into consideration for the study: the compressive strength, unit weight, compaction factor, and slump tests. The findings demonstrate that, while the water cement ratio is constant, adding more superplasticizer to self-compacting concrete improves its capacity to self-compact while also somewhat lowering its unit weight. Additionally, the compressive strength is somewhat higher than with a typical concrete mix.