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This study delves into examining the flow and viscoelastic properties of soda ash and hydrated lime-activated slag mixes with the introduction of sulfonated naphthalene-formaldehyde (SNF) as a superplasticizer. Three different mixing techniques were employed: standard one-part normal-mixing (NM), pre-mixing soda ash in water (PM), and a dry mixture of granulated blast furnace slag (GGBFS) with a NaOH solution (CM). Without SNF, the yield stress followed the order CM < NM < PM. The optimal percentage of SNF varied depending on the mixing technique: 0.75% for NM, 0.5% for PM, and 0.25% for CM. Adding the right amount of SNF reduced the yield stress in all mixing methods. However, it increased the storage modulus, indicating improved structural integrity. None of the samples displayed a distinct low-velocity elastic response (LVER) plateau.

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Rheological Compatibility of Sulfonated Naphthalene Formaldehyde on Different Mixing Procedures of Activated Slag-Based Mixes

  • 会议论文

  • 发表日期：

    2025年

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  • Jayashree Sengupta,
  • Nirjhar Dhang,
  • Arghya Deb

摘要

This study delves into examining the flow and viscoelastic properties of soda ash and hydrated lime-activated slag mixes with the introduction of sulfonated naphthalene-formaldehyde (SNF) as a superplasticizer. Three different mixing techniques were employed: standard one-part normal-mixing (NM), pre-mixing soda ash in water (PM), and a dry mixture of granulated blast furnace slag (GGBFS) with a NaOH solution (CM). Without SNF, the yield stress followed the order CM < NM < PM. The optimal percentage of SNF varied depending on the mixing technique: 0.75% for NM, 0.5% for PM, and 0.25% for CM. Adding the right amount of SNF reduced the yield stress in all mixing methods. However, it increased the storage modulus, indicating improved structural integrity. None of the samples displayed a distinct low-velocity elastic response (LVER) plateau.