Enhancement of self-compactability of fresh self-compacting concrete: A review
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The main characteristics of self‐compating concrete (SCC) are its ability to flow into every corner of the formwork
and even in congested reinforcement arrangements under its weight and without segregation. This paper
reviews the recent progress in the enhancement of the self‐compatibility of SCC in a fresh state. The main
approaches to achieve this aim was observed to be the employment of air entrainment, and the utilization
of various supplementary cementitious materials (SCMs) such as fly ash, silica fume, ground‐granulated
blast‐furnace slag and rice husk ash. Entraining suitable air bubbles had the potential to enhance the selfcompatibility
of fresh concrete while also being very beneficial in reducing the cement content of the SCC.
The workability and rheological properties of fresh SCC was observed to be enhanced by the utilization of
SCMs. SCMs also possess the advantages of pozzolanic and filler effects which are not in play for entrained
air. For future work, researchers can explore statistical and intelligent multi‐objective optimisation techniques
for getting the best amount of SCMs that will maximize the fresh properties whilst considering its deleterious
effect on the hardened properties.
Keywords
T Technology (General), TA Engineering (General). Civil engineering (General)