Cement/clay interactions-- a review: experiments, natural analogues, and modeling.

摘要: The concept of storing radioactive waste in geological formations calls for large quantities concrete that will be contact with the clay material engineered barriers as well formation. France, Switzerland and Belgium are studying option clayey formations. cement media have very contrasted chemistries interact lead to a degradation both types material. purpose this review is establish an exhaustive list laboratory experiments so identify reaction sequences evolution minerals accessory during their alteration alkaline environment. We data on dissolution kinetics environment, include invaluable study natural analogues allow one correlate phenomena time. available make it possible construct predictive numerical models. However, quality inhomogeneous, we recommend continuation thermodynamic kinetic acquisition. It obvious modeling disturbance more relevant if can combine advantages different detailed models: mineralogical completeness, combined media, porosity, consideration pCO2 all surface reactions.