![]() The stability or resistance to segregation of the plastic concrete mixture is attained by increasing the total quantity of fines in the concrete and/or by using admixtures that modify the viscosity of the mixture. The high flowability of SCC is generally attained by using high-range water-reducing (HRWR) admixtures and not by adding extra mixing water. Two important properties specific to SCC in its plastic state are its flowability and stability. Properly designed SCC can save time and labor without sacrificing performance. Traditionally, concrete with the fluidity of SCC has had a very high water-to-cement ratio, which would lower compressive strengths and compromise durability. ![]() Concrete producers must “retrain their eyes” for this very fluid mixture as it turns corners and fills forms. ![]() SCC looks very different from conventional concrete while mixing.
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