The mix design method is composed of two simple stages: optimization of granular skeleton and optimization of cementitious materials composition.
The effects of various factors including replacement levels of supplementary cementitious materials (SCMs), curing age and water binder (w/b) ratio are quantitatively discussed in terms of the phase compositions and the hydration degrees of cementitious materials.
Statistical analysis of data indicated that the sulfate resistance of cementitious materials is significantly influenced by the chemical composition and the transport properties of the system which can be improved by appropriate fly ash substitution.
Nano materials, especially nano carbon materials (NCMs) including carbon nanofibers, carbon nanotubes, and nano graphite platelets, were found to be able to improve the mechanical property, durability, and functional properties of cementitious materials due to their excellent intrinsic properties and composition effects.
The measurements of volume changes of cementitious materials thus produced, followed by the compressive strength tests, rate of hydration determination, phase composition studies and microstructure of hydration products observations have been carried out to find the optimum proportions of blended cementitious material, as the controlled expansion and hardening are concerned.
In Australia, the cement industry produces more than 10m tonnes of cementitious materials every year, releasing around 7.2m tonnes of greenhouse gas emissions into the atmosphere.
Creep of cementitious materials is a complicated phenomenon, which is influenced by the loading magnitude/history, temperature, relative humidity, thermal and drying histories, as well as chemical composition and structure of C S H itself.
Many researches have been focused on the chloride diffusivity of cementitious materials (Yoon 2009), however, it is very rare to examine the oxygen diffusivity of cementitious materials.
