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Updated: May 15, 2025
06:27
Expression of Cementitious Pore Solution and the Analysis of Its Chemical Composition and Resistivity Using X-ray Fluorescence
Published on: September 23, 2018
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Using XRD to Assess the Strength of Fly-Ash- and Metakaolin-Based Geopolymers
Arie van Riessen1, Evan Jamieson1, Hendrik Gildenhuys1
1Future Battery Industries CRC, John de Laeter Research Centre, Curtin University, Perth, WA 6845, Australia.
Materials (Basel, Switzerland)
|May 14, 2025
Summary
A new rapid X-ray diffraction (XRD) test can indicate geopolymer strength by analyzing amorphous peak shifts. This method complements mechanical testing, confirming geopolymer formation and guiding formulation success.
Area of Science:
- Materials Science
- Geopolymer Chemistry
Background:
- Compressive strength testing is the standard initial evaluation for alkali-activated materials and geopolymers.
- Assessing geopolymer strength is crucial for determining formulation success and suitability for applications.
Purpose of the Study:
- To propose and evaluate a rapid X-ray diffraction (XRD) method for indicating geopolymer strength.
- To demonstrate that XRD can provide complementary data to traditional mechanical strength testing.
Main Methods:
- Utilizing X-ray diffraction (XRD) to measure the shift in amorphous peak position.
- Comparing the amorphous peak position of the precursor material with that of the geopolymer product.
Main Results:
- The difference in amorphous peak positions correlates with the geopolymer's mechanical strength.
- The XRD method provides evidence of geopolymer formation.
Conclusions:
- A rapid XRD test can serve as an effective preliminary indicator of geopolymer strength.
- This technique offers valuable complementary data to compressive strength testing, aiding in formulation development and quality control.
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