查看文章

This paper investigates the effect of using different admixtures on the one-part ambient-cured alkali activated pastes. Na₂SiO₃-Anhydrous powder was used as solid activator along with three superplasticizers including naphthalene, melamine and polycarboxylate with different water/precursor ratios. The flowability, setting time and compressive strength development were evaluated for all AAMs mixes. ATR-FTIR test was used to check the admixtures stability in high alkali media.

All types of admixtures significantly improved the flowability of the Na₂SiO₃-anhydrous one-part AAMs and marginally affected the compressive strength. The results showed that polycarboxylate was effective for high water/precursor (≥0.36) while naphthalene performed better in case of low water/precursor (≤0.36) for Na₂SiO₃-anhydrous one-part AAMs. However, lowering the water/precursor ratio in the Na₂SiO₃-anhydrous one-part …