Intrinsic microstructure of C-A-S-H and N(-C)-A-S-H gels at low Ca/Si and Si/Al ratios

Key Points

• The study investigates the microstructure of low calcium aluminosilicate hydrate and sodium aluminosilicate hydrate gels.
• Analyzed intrinsic microstructure under varying calcium-to-silicon and silicon-to-aluminum ratios.
• Utilized techniques to assess the properties of the gels.
• Conducted comparative assessments between C-A-S-H and N(-C)-A-S-H.
• Identified key differences in the microstructure of C-A-S-H and N(-C)-A-S-H gels.
• Demonstrated that lower Ca/Si and Si/Al ratios impact the structural performance.
• Provided insights that can predict and enhance geopolymer manufacturing.