aalto1 untyped-item.component.html
Microstructural behaviour of quarry fines stabilised with fly ash-based binder
Loading...
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
14
Series
Road Materials and Pavement Design, Volume 24, issue 5, pp. 1389-1402
Abstract
Stabilised quarry fines have been explored as sustainable pavement construction materials. This study investigates the viability of such materials for applications in pavement structures, contributing to current knowledge on mechanical performance from the perspective of mineralogy, microstructure, and chemical composition of the material. This study uses fly ash-based material as stabiliser, promoting circular economy considering the availability of fly ash worldwide by 2030. Laboratory tests were performed including unconfined compressive strength (UCS), mineralogical analysis, and microstructure investigations by scanning electronic microscope (SEM) and energy dispersive X-ray spectroscopy (EDX). Using different binders, Calcium was found to be the element with most variability in mass, and the UCS increased proportionally as the ratio of CaO/SiO2 or CaO/(SiO2+Al2O2) increased. As curing time accumulates to 28 days, more cementitious reaction products were generated and observed, and the void to solid ratio reduced in some samples, possibly leading to improvements in the UCS.
Description
Keywords
Other note
Citation
Zhang, Y, Miksic, A, Castillo, D & Korkiala-Tanttu, L 2023, 'Microstructural behaviour of quarry fines stabilised with fly ash-based binder', Road Materials and Pavement Design, vol. 24, no. 5, pp. 1389-1402. https://doi.org/10.1080/14680629.2022.2064904