RC CONSTRUCTIONS IN MARINE ENVIRONMENTS

RC constructions exposed to marine environment exhibit very severe deterioration processes. Besides macroclimate conditions the aggression varies also with microclimate referring to the different position of individual structural element. The established condition of the coastal structures, typical damages of coastal structures and the analysis of chloride profiles on concrete samples taken from different parts of the quay wall structure will be presented. Obtained results were used also to verify and to calibrate mathematical model of diffusion i.e. the 2^nd Fick's law of diffusion. The damaged structures are exposed to even faster decay, especially when they are situated in an aggressive marine environment. In this sense, the approach to the execution of repair works with the description of individual phases and the selection of adequate repair materials will be presented. Also, some new coastal structures, which are made in the last five years, will be presented in the paper. Designing of new coastal structures were based on our experience gained from analysis of old coastal structures.

• INTRODUCTION

• MODEL OF CHLORIDE DIFFUSION

• RESEARCHES AND RESULTS

• REPAIR SYSTEM AND RENOVATION

• CONCRETE DESIGN

• CONCLUSIONS

• REFERENCES