Synthesizing one-part geopolymers from rice husk ash

P. Sturm, G.J.G. Gluth, H.J.H. Brouwers, H.C. Kühne

Research output: Contribution to journalArticleAcademicpeer-review

164 Citations (Scopus)
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Abstract

One-part geopolymers offer advantages over conventional geopolymers with regard to handling and storage of feedstocks. However, they often suffer from a low degree of reaction, a high amount of crystalline byproducts, and consequently low strength. In this study, one-part geopolymers were produced from rice husk ash (RHA) and sodium aluminate, and investigated by XRD, ATR-FTIR, SEM and compressive strength testing. The compressive strength of the material was ∼30 MPa, i.e. significantly higher than for comparable one-part geopolymers. This is attributed to an almost complete reaction of the RHA and the absence of crystalline byproducts (zeolites) in the hardened geopolymer.

Original languageEnglish
Pages (from-to)961-966
Number of pages6
JournalConstruction and Building Materials
Volume124
DOIs
Publication statusPublished - 15 Oct 2016

Keywords

  • Alkali-activation
  • Bio-based materials
  • Geopolymers
  • One-part formulation
  • Rice husk ash

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