By applying a benchmark for current durability rules for the exposure classes XC, it was determined that the current prescriptive rules may result in an insufficient safety margin for specific design situations and insufficient economic serviceability of prescriptively designed structures.
Design charts have therefore been developed to counteract this deficit. For a given material resistance, the required minimum cover to withstand a particular environmental load (XC exposure class) can be determined in dependence of a freely selectable target design service life.
Carbonation resistance classes are proposed for use as design rules. A series of different concretes were tested and classified. In addition, permissible combinations of resistance class and concrete cover are given in dependence of each exposure class.
«
By applying a benchmark for current durability rules for the exposure classes XC, it was determined that the current prescriptive rules may result in an insufficient safety margin for specific design situations and insufficient economic serviceability of prescriptively designed structures.
Design charts have therefore been developed to counteract this deficit. For a given material resistance, the required minimum cover to withstand a particular environmental load (XC exposure class) can be det...
»