60% 3-day and 20% 28-day B3B flexural strength gain by addition of CNCs cement. Plasticization as evidenced by lower yield Mechanism is thought to be short circuit diffusion that increases DOH Cement chemistry matters: Type V shows larger strength and DOH benefit than Type I Alkali enhances CNC effects CNC matters: CNCs from different vendors show differences Unclear what is controlling effect - shorter looks better, higher zeta may be better "Sugar" Contaminant Matters - Needs to be cleaned to really, REALLY low levels!
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