Properties of Geopolymers Based on Fly Ash with the Addition of Asphalt from Road Surface Demolition
Barbara Kozub
TL;DR
This study explores using fly ash and recycled asphalt to create geopolymer materials with good mechanical and water-resistant properties for construction.
Contribution
The novelty is combining mineral and organic-mineral fillers in a geopolymer matrix for sustainable construction materials.
Findings
Quartz sand improves density and mechanical strength of geopolymer composites.
Recycled asphalt enhances water resistance but slightly reduces mechanical performance at high dosages.
Ternary composites offer a balanced combination of strength and durability in humid conditions.
Abstract
This article presents the results of a comprehensive investigation into geopolymer composites synthesized from fly ash, incorporating ground asphalt derived from reclaimed road pavement and quartz sand. The primary objective of this study was to elucidate the influence of mixture composition on the mechanical, physical, and microstructural characteristics of the developed materials. The innovative aspect of this research lies in the integration of two distinct filler types—mineral (quartz sand) and organic-mineral (milled asphalt)—within a single geopolymer matrix, while preserving key performance parameters required for engineering applications, including compressive and flexural strength, density, water absorption, and abrasion resistance. The experimental methodology encompassed the characterization of the raw materials by X-ray diffraction (XRD), chemical composition analysis via…
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Taxonomy
TopicsConcrete and Cement Materials Research · Innovative concrete reinforcement materials · Geotechnical and construction materials studies