Mechanical properties of self-compacting geopolymer concrete utilizing fly ash

Abstract

SCGC (self-compacting geopolymer concrete) contains a new hybrid of self-compacting concrete and geopolymer concrete, under the development in recent years, regarded to be an environmentally beneficial building material, as it does not use Portland cement as a traditional binder, and its flowability eliminates the need for a vibrator in concrete application. Local pozzolanic materials containing silica (SiO2) and alumina were utilized as the binder in this study (Al2O3). SCGC is a considerably beneficial material for concrete repair material due to its low electrical resistivity characteristic. This stage of research is focused on determining the most effective curing procedures and mix designs for SCGC. Similarly, prior studies conducted by Tjiwi Kimia were performed in the laboratory, including slump flow, T50, V-funnel, and L-box tests. Additionally, features such as compressive, tensile, and flexural strength were employed to test the hardness qualities. The fresh concrete test fulfills the requirements of EFNARC (2002), including filling ability, passing ability, and segregation resistance. Slump flow measurements yielded a value of 690 mm and a T50 of 2.4 seconds. Furthermore, the V-funnel results yielded a value of 8.35 mm and an L-box ratio of 0.84, while the average compressive strength was 27.05 MPa, the average split tensile strength was 6.32 MPa, and the average flexural strength was 1.91 MPa.