Microwave Characterization of Fly Ash Geopolymerization

Abstract

Alkali-activated fly ash geopolymers are structural materials that can be used as a sustainable alternative to ordinary portland cement concrete in infrastructure applications. However, the widespread use of geopolymers by the construction industry has been limited in part by a lack of understanding about the fundamental reaction mechanisms that occur during their formation. Since microwave signals are very sensitive to the presence and binding state of water, microwave materials characterization is used to investigate the role of water in two fly ash geopolymers during reaction at early ages. The results indicate that this measurement technique has a promising potential for assessment of changes in geopolymer material properties during their formation. This will allow for better prediction and control of the setting behavior and mechanical and durability properties of geopolymers.

Meeting Name

2016 IEEE Instrumentation and Measurement Technology Conference, I2MTC 2016 (2016: May 23-26, Tapei, Taiwan)

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Cements; Construction industry; Dielectric materials; Dielectric properties; Fly ash; Geopolymers; Inorganic polymers; Materials testing; Microwaves; Nondestructive examination; Portland cement; Waveguides, Geopolymer; Materials characterization; Microwave non-destructive testing; Open ended waveguides; Property measurement, Characterization; dielectric property measurements; open-ended waveguide

International Standard Book Number (ISBN)

978-1-4673-9220-4

International Standard Serial Number (ISSN)

1091-5281

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2016 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 May 2016

Link to Full Text

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