Document Type
Extended Abstract
Abstract
Enhancing clinker efficiency and increasing limestone filler (LF) in binder are essential for engineering applications. This study explores the high-volume substitution of Portland cement, with 50 wt.% LF and up to 30 wt.% traditional SCMs, in semi-flowable concrete (SFC), evaluating properties of SFC. A slump of 200 mm was achieved, with retentions above 130 mm after 70 minutes for SFC mixtures. The 28-day compressive and flexural strengths of SFC exceeded 30 MPa and 3.2 MPa, respectively, meeting structural performance benchmarks (ACI 318, ASTM C94). LF replacement rate in binder exceeding 10% reduces strength of SFC due to LF’s lack of cementitious and pozzolanic properties. The results demonstrate the potential of SFC with 50 wt.% LF and partial SCMs to significantly reduce clinker content while maintaining mechanical properties, supporting sustainable construction practices.
Keywords
Eco-concrete, Performance; Semi-flowable concrete; Limestone filler.
DOI
10.5703/1288284317969
Engineering Performance of Simi-flowable Concrete with High-Volume Indigenous SCMs
Enhancing clinker efficiency and increasing limestone filler (LF) in binder are essential for engineering applications. This study explores the high-volume substitution of Portland cement, with 50 wt.% LF and up to 30 wt.% traditional SCMs, in semi-flowable concrete (SFC), evaluating properties of SFC. A slump of 200 mm was achieved, with retentions above 130 mm after 70 minutes for SFC mixtures. The 28-day compressive and flexural strengths of SFC exceeded 30 MPa and 3.2 MPa, respectively, meeting structural performance benchmarks (ACI 318, ASTM C94). LF replacement rate in binder exceeding 10% reduces strength of SFC due to LF’s lack of cementitious and pozzolanic properties. The results demonstrate the potential of SFC with 50 wt.% LF and partial SCMs to significantly reduce clinker content while maintaining mechanical properties, supporting sustainable construction practices.