ABSTRACT
In Sweden, especially in recent years, there has been problem with cracking of shotcrete in tunnels most of which has been constructed using wet-process shotcrete. This is especially the case where the shotcrete is covering drainage systems, where the bonding to the substrate is weak. The purpose of this investigation was to determine if shotcrete exhibits a greater tendency to shrink and crack than ordinary cast concrete. Basically the shotcrete is based on ordinary concrete but there are differences.
