Effect of fibres on early age cracking of concrete tunnel lining. Part I: Laboratory ring test

摘要

The cracking of concrete structures can drastically reduce their serviceability, specifically by inducing a decrease in bearing capacity while their permeability and diffusivity are being increased. Cracking therefore leads to a faster penetration of liquid, gaseous and aggressive agents, which may reduce the durability and the tightness of the structures. It may be caused by an external loading or else by the self- or external restraint of autogenous, drying and thermal shrinkage. This paper will focus on the latter of these phenomena.