Work

Strength and Microstructural Characteristics of Fly Ash–Waste Glass Powder Ternary Blended Concrete

Year: 2025

Type: article

Abstract: Ternary blended concrete comprising flyash powder (FA), waste glass powder (WG) and ordinary Portland cement (OPC) were prepared such that the WG to total binder varied from 0-20% (C80FA20-xGx: x = WG/(WG+FA+OPC)) at the interval of 0.05. The developed concrete was investigated for absorption, workability, 28-day compressive strength, product (binder) phases, bond characteristics, microstructural and elemental composition. The synergy of the proportion of WG and FA (5-15% and 10-10℅) together with OPC (80℅) reduced the workability, enhanced 28-day water absorption and produced moderately high compressive strength (47-48 MPa) that was about 15% lower than that recorded in pure OPC concrete (57.2 MPa). The binder with balanced proportion of FA and WG (C80FA10G10) was found to be more amorphous with better microstructural stability than pure FA blended concrete (C80FA20G0) due to pore-filling of the microcracks. Disappearance of hedenbergite phase (CaFeSi2O6) was noted in the developed ternary binder while more alumina in FA noticeably induced conversion of tobermorite (CSH to C-A-S-H in ternary binder. Besides, Si/Ca, Ca/Al and Si/Al ratios were higher in WG-FA balanced ternary binder (C80FA10WG10) than when FA preponderated WG. Finally, using WG in synergy with FA could regulate absorption, consistency, amorphorsity and microstructure characteristics of FA-WG ternary binder.

Source: Materials

DOI: 10.3390/ma18194483

Authors: Moruf O. Yusuf, Khaled A. Alawi Al-Sodani, Adeshina A. Adewumi, Muyideen Abdulkareem, Ali H. AlAteah

Institutions: University of Hafr Al-Batin, Military Technological College

Language: English

Topic: Concrete and Cement Materials Research

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: gold

Estimated APC paid: $3,137