AbstractThe behavior of cement-based materials is manipulated by chemical and physical
processes at the nanolevel. Therefore, the application of nanomaterials in civil
engineering to develop nano-modified cement-based materials is a promising research.
In recent decades, a large number of researchers have tried to improve the properties
of cement-based materials by employing various nanomaterials and to characterize the
mechanism of nano-strengthening. In this study, the state of the art progress of
nano-modified cement-based materials is systematically reviewed and summarized.
First, this study reviews the basic properties and dispersion methods of
nanomaterials commonly used in cement-based materials, including carbon nanotubes,
carbon nanofibers, graphene, graphene oxide, nano-silica, nano-calcium carbonate,
nano-calcium silicate hydrate, etc. Then the research progress on nano-engineered
cementitious composites is reviewed from the view of accelerating cement hydration,
reinforcing mechanical properties, and improving durability. In addition, the market
and applications of nanomaterials for cement-based materials are briefly discussed,
and the cost is creatively summarized through market survey. Finally, this study also
summarizes the existing problems in current research and provides future perspectives
accordingly.
Research Progress on Tissue Culture and Genetic Transformation of Kenaf (Hibiscus cannabinus)
