AN ACCELERATED DETERIORATION HAZARD MODEL: APPLYING FOR CONCRETE CARBONATION PROCESSES

Abstract

  The carbonation of concrete components has become on of the major subjects in the asset management of water treatment facilities. The root-t formula, which postulates that the carbonation depth is proportional to the root of the exposure time length, has been the basic hypothesis in explaining the short-and medium-term carbonation processes. Yet, no sufficient data sources are available so far to describe the long-term carbonation. In this paper, the accelerated hazard model is presented to forecast the long-term carbonation processes based upon the observation sets of carbonated concrete samples. As far as our dataset is concerned, the hypothesis of the root-t formula is statistically rejected. The carbonation has progressed faster than expected by the root-t formula.