Difference between Self Compacting and Normal Concrete


One of the key differences between the self-compacting concrete (SCC) and normal cement concrete (NCC) is the flowability property of SCC by it's on weight. Most of the differences shown by SCC is due to this variation of flowability from the normal concrete. Here the differences between SCC and normal concrete in terms of different fresh state properties, mix composition, and long-term properties are explained in the below section.
Difference between SCC and Normal Cement Concrete
The basic difference between self-compacting concrete and normal concrete are tabulated below.

Table.1: Difference between Self-Compacting Concrete and Normal cement Concrete

Serial No. Self-Compacting Concrete Normal Cement Concrete
1 Concrete has high flowability to undergo compaction by its own weight Concrete is compacted by external means of vibration
2 High workability Less workable mix
3 Workability gained through Polycarboxylate superplasticizers and viscosity modifying agents Workability gained through increased moisture content
4 Addition of Polycarboxylate superplasticizer increase the bond between aggregate and cement matrix The aggregate-cement matrix is weak
5 Water Content is Low High Water Content
6 Fines Content – Cement and Fine aggregate is high The fines content is less compared to SCC
7 Lower water content decreases the Bleeding Bleeding is high
8 Increased fines content gives a homogeneous mix with less segregation issues Segregation is higher
9 Low Viscosity due to high fines content High Viscosity
10 SCC structures give good aesthetic finish Aesthetic finish is not satisfactory
11 Good choice for thick reinforcement works Normal concrete are limited in thick reinforcement areas due to external compaction difficulties.

Post time: Nov-17-2022