Deterioration in tunnel lining due to moisture effects

Abstract

The thesis is focused on interpretation of problems from underground engineering: deterioration of tunnel lining due to various external effects, like moistening, extreme temperature etc. Mathematical and numerical methods are applied to 3D problems and the results are compared with the experience and knowledge from practice and the available publications will be also discussed. In the study internal chemical and physical changes in fiber reinforced concrete linings and surrounding rock associated with a gradual external changes applied to tunnel structure are observed and monitored in order to observe their reciprocal interactions, clarifying whether they could be related to the water activities and heat transfer inside of the bearing system.

The thesis is focused on interpretation of problems from underground engineering: deterioration of tunnel lining due to various external effects, like moistening, extreme temperature etc. Mathematical and numerical methods are applied to 3D problems and the results are compared with the experience and knowledge from practice and the available publications will be also discussed. In the study internal chemical and physical changes in fiber reinforced concrete linings and surrounding rock associated with a gradual external changes applied to tunnel structure are observed and monitored in order to observe their reciprocal interactions, clarifying whether they could be related to the water activities and heat transfer inside of the bearing system.