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The spread (slump flow) of SCC typically ranges from 18 to 32 inches (455 to 810 mm) depending on the requirements for the project.

The viscosity, as visually observed by the rate at which concrete spreads, is an important characteristic of plastic SCC and can be controlled when designing the mix to suit the type of application being constructed. give it significant economic, constructability, aesthetic and engineering advantages.

Adjustments to traditional mix designs and the use of superplasticizers creates flowing concrete that meets tough performance requirements.

The first generation of SCC was therefore characterized and specified for specialized applications.

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.

SCC does not use a high proportion of water to become fluid - in fact SCC may contain less water than standard concretes.

Instead, SCC gains its fluid properties from an unusually high proportion of fine aggregate, such as sand (typically 50%), combined with superplasticizers (additives that ensure particles disperse and do not settle in the fluid mix) and viscosity-enhancing admixtures (VEA).

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