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Self Compacting Concrete, Grade Standard: M25-M75
Such high-performance concrete had been used mostly in repair applications and for casting concrete in restricted areas. The first generation of SCC was therefore characterized and specified for specialized applications. SCC can be used for casting heavily reinforced sections, places where there can be no access to vibrators for compaction and in complex shapes of formwork which may otherwise be impossible to cast, giving a far superior surface than conventional concrete. The relatively high cost of material used in such concrete continues to hinder its widespread use in various segments of the construction industry , including commercial construction, however the productivity economics take over in achieving favorable performance benefits and works out to be economical in pre-cast industry.
The incorporation of powder, including supplementary cementitious materials and filler, can increase the volume of the paste, hence enhancing deformability, and can also increase the cohesiveness of the paste and stability of the concrete. The reduction in free water can reduce the concentration of viscosity-enhancing admixture VEA necessary to ensure proper stability during casting and thereafter until the onset of hardening.
Self-Compacting Concrete: Materials, Properties and Applications
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