Abstract:
Self-compacting concrete (SCC) is a special type of concrete that flows under its own
weight while enhancing the compressive strength and durability compared to conventional concrete.
This is an effort to present the possibility of using Blended Hydraulic Cement (BHC) instead of
ordinary Portland cement (OPC) in SCC production. In order to achieve the required workability and
basic mechanical properties, 10 control mixes of SCC with OPC were prepared using the coarse
aggregate size of 5 mm – 14 mm. Each mix was cast using 100% OPC and 100% BHC separately. Fresh
properties of the SCC were tested by using slump flow, V-funnel, L-box and J-ring test according to
the EFNARC guideline. 9-cubes and 6-cylindrical specimens were cast per mix to determine the
compressive strength at the 7th, 28th and 56th days. Test results illustrate that the workability properties
of fresh concrete mix are moderately good using both cement types. Most mixes show higher 28th and
56th-day compressive strengths for SCC mix made of BHC than OPC compared with 7th-day
compressive strength variation. Fly ash in BHC contributes later strength gaining of SCC in this study.
Thus, the experimental investigation indicates the suitable mix designs used in the current
construction industry.
