Retardation Effects of Cellulose Nanocrystals (CNCs) in Portland Cement Pastes

摘要

1. CNC increase mechanical properties of hydrated cement pastes. 2. The addition of CNC causes delays in initial setting. 3. At high dosages (<1%), CNC made by oxidative methods pose concerning delays in setting (<1 week). 4. Sugars can be washed away from CNC slurries to enhance their performance in cement, and in the case of CNC made by oxidative methods, reduce the hydration delay.