A study of alumoferrite phase of Portland cement clinker

Calcium alumoferrites of different composition were synthesized and kinetics of their hydration examined. Their different hydration activity was established, which explains their different strength. It is shown that in the production of Portland cement clinker, it is necessary that, along with calcium alumoferrites, tricalcium aluminate must be present. In this case, Portland cement obtained from such clinker, upon hardening will have a strength 5—6 MPa higher than cement, where only alumoferrite phase is present.

Author: B.V. Gusev, S. Ying Yen-lian, Yu.R. Krivoborodov

Section: Science and production

Keywords: calcium ferrite phases, synthesis, hydration, composition of liquid phase at hydration, hydrated phases, hardening, strength cement paste