Role of dopants (B, P and S) on the stabilization of β-Ca2SiO4

The interest in belite (Ca2SiO4 + impurities or dopants) phase increases significantly since new types of clinkers based essentially on this become promising alternatives to Portland clinker for reducing CO2 emission. Belite is also as a biomedical cement. For the cement industry, stabilization β-polymorph essential γ-polymorph has no hydraulic activity. In order understand mechanism stabilization, paper explores addition three dopants, namely P, B and S. It turns out that these dopants can modify lattice parameters Ca2SiO4 induce specific twinning morphologies surface relief, well grain boundaries deformations. A link between dopant leading significant microstructural changes been established.