Abstract
This paper compared the rheological properties and compressive strengths of self-compacting concrete (SCC) and conventional cement concrete. The flowability and segregation resistance of freshly mixed concrete specimens were examined by the V-funnel apparatus, while the characteristics of passing ability were investigated with the L-box apparatus. Cylindrical concrete specimens of 100 mm diameter × 200 mm length were investigated for compressive strength. The rheological properties of SCC are incomparable with those of the conventional concrete due to their diverse testing methods and characteristics of individual flow. The compressive strength results of hardened concrete showed that SCC gained strength slowly compared to the conventional cement concrete due to the presence of admixtures and its 28 days strength was lower than conventional cement concrete, but SCC eventually had potentials of higher strength beyond 90 days. Finally, the effect of water-cement ratio on the plastic properties of self-compacting concrete was quite negligible compared to conventional concrete.
Highlights
Concrete is the most versatile heterogeneous construction material and the impetus of infrastructural development of any nation
Self-compacting concrete or self-consolidating concrete (SCC) is a highly flowable, non-segregating concrete that can spread into place, fill the formwork, and encapsulate the reinforcement without any mechanical consolidation [8]-[10]
The purpose of this research is to investigate the rheological properties and compressive strengths of Self compacting concrete (SCC) compared with conventional cement concrete
Summary
Concrete is the most versatile heterogeneous construction material and the impetus of infrastructural development of any nation. Civil engineering practice and construction works around the world depend to a very large extent on concrete [1]. It is the world’s most widely used construction materials because of its properties. Self compacting concrete (SCC) was developed to increase concrete usage by engineers in Japan in the early 1980s with the introduction of conventional super-plasticizers to create highly fluid concrete, while using. Self-compacting concrete or self-consolidating concrete (SCC) is a highly flowable, non-segregating concrete that can spread into place, fill the formwork, and encapsulate the reinforcement without any mechanical consolidation [8]-[10]. Fully consolidation without voids or honeycombs through compaction by manual or mechanical vibrators is very impractical in this situation, it generates delays and additional cost in the projects and the development of SCC
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