The microstructural characterization of alkali-activated binders incorporating waste clay brick powder with fly ash and GGBFS
Source abstract
Abstract
The utilization of WCBP in alkali-activated binders presents a sustainable alternative to traditional binders. This study investigates the influence of WCBP content, precursor composition, and curing temperature on the mechanical and microstructural performance of fly ash–GGBFS–WCBP systems. A multi-technique approach using XRD-Rietveld, TIMA, FTIR, TGA-DTG, and SEM-EDS was employed to analyze gel formation and phase evolution. Increasing WCBP content prolonged setting time but enhanced compressive strength and amorphous content, peaking at 40% replacement with compressive strength increasing from 70 MPa for the control to 89 MPa under ambient curing, while 60% WCBP caused a slight decrease to 69 MPa. Similar trends were observed at 40 °C and 60 °C with peak strengths of 83 and 88 MPa at 40% WCBP. Microstructural analysis confirmed that enhanced amorphous content contributed to strength development, with alkali-activated gel formation observed in all samples, while WCBP beyond 40% promoted crystalline phase formation reducing matrix densification.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Recycling and utilization of industrial and municipal waste in materials production
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Civil and Mechanical Engineering, Curtin University
Sustainable Engineering Group, School of Civil and Mechanical Engineering, Curtin University
References (96)
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