The Effect of Nano-Alumina on the Performance of Self-Compacting Geopolymer Concrete Reinforced with Micro-Steel Fibers

Session

Civil Engineering, Infrastructure and Environment

Description

This article discusses the impact of using nano-alumina (NA) in micro-steel fiber-reinforced self-compacting geopolymer concrete (SCGPC) based on calcined kaolin clay (CKC). Three SCGPC mixes were created using NA in 1%, 2%, and 3% ratios as a partial replacement for CKC, while another mix without NA was also produced. All mixes had a constant total binder amount of 484 kg/m3 and a fixed quantity of micro-steel fibers of 0.5% by volume. The fresh characteristics were assessed by slump flow, V-funnel, and L-box tests. Additionally, the study assessed the compressive and flexural strengths, porosity, and water absorption at 28 days after 24 hours of oven curing. Results revealed that the fresh characteristics were negatively affected by the addition of NA. However, it was found that 2.0% of NA was the optimal amount that provided the maximum flexural and compressive strengths, lower porosity, and considerably increased the sample's resistance to water absorption.

Keywords:

Calcined Kaolin Clay, Nano-Alumina, Self-Compacting Geopolymer Concrete, Sustainability.

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-550-95-6

Location

UBT Lipjan, Kosovo

Start Date

28-10-2023 8:00 AM

End Date

29-10-2023 6:00 PM

DOI

10.33107/ubt-ic.2023.357

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Oct 28th, 8:00 AM Oct 29th, 6:00 PM

The Effect of Nano-Alumina on the Performance of Self-Compacting Geopolymer Concrete Reinforced with Micro-Steel Fibers

UBT Lipjan, Kosovo

This article discusses the impact of using nano-alumina (NA) in micro-steel fiber-reinforced self-compacting geopolymer concrete (SCGPC) based on calcined kaolin clay (CKC). Three SCGPC mixes were created using NA in 1%, 2%, and 3% ratios as a partial replacement for CKC, while another mix without NA was also produced. All mixes had a constant total binder amount of 484 kg/m3 and a fixed quantity of micro-steel fibers of 0.5% by volume. The fresh characteristics were assessed by slump flow, V-funnel, and L-box tests. Additionally, the study assessed the compressive and flexural strengths, porosity, and water absorption at 28 days after 24 hours of oven curing. Results revealed that the fresh characteristics were negatively affected by the addition of NA. However, it was found that 2.0% of NA was the optimal amount that provided the maximum flexural and compressive strengths, lower porosity, and considerably increased the sample's resistance to water absorption.