Title:
Mixture Design for Lightweight Geopolymer Concrete
Author(s):
Sathya Thukkaram and Arun Kumar Ammasi
Publication:
Materials Journal
Volume:
121
Issue:
5
Appears on pages(s):
91-104
Keywords:
geopolymer; lightweight aggregates; lightweight concrete (LWC); mixture design
DOI:
10.14359/51742040
Date:
9/1/2024
Abstract:
Lightweight concrete (LWC) finds wide-ranging applications inthe construction industry due to its reduced dead load, good fireresistance, and low thermal and acoustic conductivity. Lightweightgeopolymer concrete (LWGC) is an emerging type ofconcrete that is garnering attention in the construction industryfor its sustainable and eco-friendly properties. LWGC is producedusing geopolymer binders instead of cement, thereby reducing thecarbon footprint associated with conventional concrete production.However, the absence of standard codes for geopolymer concreterestricts its widespread application. To address this limitation,an investigation focused on developing a new mixture design forLWGC by modifying the existing ACI 211.2-98 provisions has beencarried out. In this study, crucial parameters of LWGC, such asalkaline-binder ratio (A/B), molarity, silicate/hydroxide ratio, andcuring temperature, were established using machine learning techniques. As a result, a simple and efficient method for determining the mixture proportions for LWGC has been proposed.
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