THE ESTABLISHMENT OF A METHOD FOR EVALUATING THE LONG-TERM WATER-TIGHNESS DURABILITY OF UNDERGROUND CONCRETE STRUCTURES TAKING INTO ACOUNT OF SOME DETERIORATIONS

To establish a method for evaluating the long-term water-tightness durability of underground concrete structures, the authors firstly studied a deterioration evaluation model to express the deterioration condition of concrete structures and constructed, on the basis of this model, a function evaluation model to estimate the lowering of functions due to deterioration, consequentlly indicating a “concept for evaluating the deterioration and functions of concrete structures” which will make it possible to perform the functional evaluation of concrete structures. Based on tihs concept, the authors then discusses a technique for evaluatinig the long-term water-tighthess durability of underground concrete structures, specifically indicating the tectnique by means of illustrations.