Effect of metakaolin dispersion on the fresh and hardened state properties of concrete

Effect of various supplementary cementitious materials on rheological properties of self-consolidating concrete

“…4a-c that the HRWR demand was higher when compared to the control mixtures. These results are in agreement with other studies [10,20,29,31]. Not only the shape and surface texture of FA particles, but also the loss on ignition (LOI), sulfate content, and particle size distribution of FA particles are factors that influence the HRWR requirements of cement pastes and concretes containing FA.…”

“…The causes of increase in HRWR admixture demand upon MK incorporation were studied by several researches [29,30]. They concluded that very small MK particles, owing to their high surface energy, tend to agglomerate resulting in a high amount of HRWR necessary for the deflocculation of fine agglomerate particle system to lubricate the flowing system.…”

Evaluation of chloride-penetration resistance of metakaolin concrete by means of a diffusion – Binding model and of the k-value concept

“…Thus, the concentration of free Cl -in the pore solution is reduced. Hence, Cl -/OH -ratios are reported similar to those of equivalent OPC pastes and the risk of chloride-induced corrosion of embedded steel is low [33][34][35][36][37][38][39][40][41][42][43][44][45][46].…”

Review on concrete nanotechnology

“…Even if the use of metakaolin (belonging to kaolinite group) (Dhinakaran, Thilgavathi, & Venkataramana, 2012;Paiva, Velosa, Cachim, & Ferreira, 2012;Siddique & Klaus, 2009) and montmorillonite (Kuo, Huang, & Lin, 2006b) particles at microscale in concrete production is well reported, nanoengineering in clays is gaining interest in the research community. The large surface area of these nanoparticles and their abundance because of their small size can facilitate the chemical reactions to produce a dense cement matrix with more calcium silicate hydrate (C-S-H) and less calcium hydroxide.…”