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Self consolidating concrete (SCC) is highly flowable, non segregating concrete that can spread into place, fill the formwork, and encapsulate the reinforcement without any mechanical consolidation (ACI 237).Concrete is susceptible to a variety of chemical attacks.
This picture demonstrates the “bugholes” on the surface of conventional concrete that has been placed into a form and vibrated.
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It can be shown that an increase in the utilization of fly ash to partially replace cement tends to reduce the degradation as confirmed by less compressive strength loss and diameter change.
The effect of fly ash to reduce the degradation of SCC is more pronounced at a later age.