Performance of Self Compacting Concrete using Flyash & Msand-An Experimental Study

Rajkumar
2014 Journal of Civil Engineering and Environmental Technology Print   unpublished
Self Compacting Concrete (SCC) demands large amount of powder content and fines for its cohesiveness and ability to flow without bleeding and segregation. In this investigation, cement and sand are partly replaced by pozzolanic-cementitious material Fly ash (class F) and manufactured sand to produce M30 grade Self Compacting Concrete which minimizes the overall cost of SCC. The trial mix of SCC is designed by the reference of EFNARC specifications and some research papers. The partial
more » ... t percentage of fly ash and manufactured sand varies from 0 to 40%. The total number of trial mix proportions is 25, and for each trial mix, fresh concrete properties were studied such as filling ability, passing ability and segregation resistance through slump flow test, T 50cm slump flow test, V-funnel test and L-box test. The satisfied trial mixes in fresh state were cast for the study of hardened concrete properties such as compressive strength, split tensile strength and flexural strength. The cube compression tests, flexural tests and split tensile tests were carried out at 3, 7 and 28 days of curing periods. The increase in partial replacement of cement by fly ash improved fresh and hardened concrete property up to the range of 30%. Better results were observed in split tensile and flexural strength up to the mix proportion of 30% of fly ash and 40% of manufactured sand.
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