TABASSUM BINTE REZA1, MD WAHAB ALI2, AHSAN HABIB3, MD NAFIZUR RAHMAN4 and MD ASHRAFUL ALAM5
1=Tabassum Binte Reza, Research Fellow, Housing and Building Research Institute, Dhaka 1216, Bangladesh, 2=Md Wahab Ali, Research Officer, Housing and Building Research Institute, Dhaka 1216, Bangladesh, 3=Ahsan Habib, Senior Research Officer, Housing and Building Research Institute, Dhaka 1216, Bangladesh, 4=Md Nafizur Rahman, Principal Research Officer, Housing and Building Research Institute, Dhaka 1216, Bangladesh and 5=Md Ashraful Alam, Director General, Housing and Building Research Institute, Dhaka 1216, Bangladesh.
ABSTRACT
The study was conducted at the Department of Building Material Division, Housing and Building Research Institute, Dhaka- 1216, Bangladesh from August 2022 to June 2023. Introducing high-performance self-compacting concrete (HPSCC) is among the most promising developments in the building sector. Superior strength, endurance, uniformity, improved microstructure and reduced segregation are features of HPSCC. The mix design for this concrete needs to be adjusted to account for its high strength and capacity for self-compaction. In HPSCC, supplemental cementitious materials like fly ash (FA) can be employed to reduce the amount of cement needed and the CO2 emissions that come with its manufacture. Steel wire mesh may be a way to improve the tensile performance of traditional concrete, which has comparatively low tensile resistance. In the current study, steel wire mesh (0.5% and 1%) and fly ash (5%) in place of CEM II (cement) are utilized, and their fresh, mechanical, and durability qualities are compared with the control concrete sample. Additionally, to make a basic HPSCC and to compare it with the fly ash and steel wire mesh-based mix, a sample without fly ash and steel wire mesh is produced. The fresh qualities were examined and verified with the help of Slump flow, T 500 and V-funnel. Compared to the other samples, the results generally show an improvement in the mechanical properties of the produced concretes with 5% fly ash and 1% steel wire mesh. Although all HPSCC mixes satisfy the fresh property parameters, the fresh properties are better in HPSCC without fly ash and steel wire mesh. The results demonstrate the benefits of utilizing fly ash and steel wire mesh.
Keywords: High performance Concrete, Self-compacting concrete, Fly ash and Wire mesh.