Technical documentation
Production of Spherical Porous Ceramic from Waste Coal Fly Ash and Waste Glass for Construction Lightweight Aggregate
Journal of materials in civil engineering, v 37(9), 04025303
01 Sep 2025
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
AbstractThe use of solid waste materials as feedstock for lightweight aggregate (LWA) production is a potential waste management strategy. Creating value-added LWAs solely from solid waste enhances the sustainability of their production. This study investigated the potential of synergistic blends of waste coal fly ash (WCFA) and waste glass (WG) to produce spherical porous ceramics for construction LWA. The research focused on identifying optimal sintering conditions to produce WCFA/WG-based LWAs with desirable engineering properties. A rapid sintering method using a stationary tube furnace was employed to manufacture WG-WCFA-based LWA. Process conditions were selected with guidance from thermodynamic predictions of the slag content and the Krieger and Dougherty empirical model for the viscosity of the slag-solid suspension. From the prediction, ranges of experimental parameters were identified, including sintering temperatures from 950°C to 1,100°C for WG contents of 0–40 wt%. The physical and mechanical properties of LWA depend on the pore structure formation during sintering, which is governed by slag quantity, viscosity of the slag-solid suspension, availability of unburnt carbon, and neck growth of particles. The required slag content and viscosity of the slag-solid suspension for achieving the desirable properties of LWA based on WG and WCFA were determined to be in the range of 45%–60% slag content and 1×104–2×105 Pa·s viscosity.
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Details
- Title
- Production of Spherical Porous Ceramic from Waste Coal Fly Ash and Waste Glass for Construction Lightweight Aggregate
- Creators
- Sharaniya Visvalingam - Drexel UniversityMegan A. Creighton - Drexel UniversityJason B. Baxter - Drexel UniversityYick G. Hsuan - Drexel UniversityYaghoob “Amir” Farnam - Drexel University
- Publication Details
- Journal of materials in civil engineering, v 37(9), 04025303
- Publisher
- American Society of Civil Engineers
- Number of pages
- 11
- Grant note
- National Science Foundation (NSF) Partnerships for Innovation PFI-TT: 1918838 National Science Foundation: CBET-2350073 Pennsylvania Department of Community & Economic Development: 1060176-483728 Drexel University Longsview FellowshipAdvanced Infrastructure Materials (AIM) Laboratory at Drexel University
This work was supported in part by the National Science Foundation (NSF) Partnerships for Innovation PFI-TT Award - 1918838, the National Science Foundation Award CBET-2350073, the Pennsylvania Department of Community & Economic Development subcontract 1060176-483728, and the Drexel University Longsview Fellowship. The work described in this paper was conducted in the Advanced Infrastructure Materials (AIM) Laboratory at Drexel University, and the authors acknowledge any support that has made its operation possible. XCT analyses were performed using instruments in the Materials Characterization Core at Drexel University. The contents of this paper reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein, and do not necessarily reflect the official views or policies of the sponsors. Nor do the contents constitute a standard, specification, or regulation.
- Resource Type
- Technical documentation
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering; Chemical and Biological Engineering
- Web of Science ID
- WOS:001529653700030
- Scopus ID
- 2-s2.0-105009603659
- Other Identifier
- 991022060028004721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Construction & Building Technology
- Engineering, Civil
- Materials Science, Multidisciplinary