Concrete Structure Durability Analysis And Judgment

With the development of our national economy, concrete structures have replaced brick-concrete structures, and have become the main form of the structures. Every year there are a large number of buildings that put into used, but because of the general design and construction level is low, in the next 30 years, there will be a large number of concrete structures will enter structure aging. Therefore, the durability of concrete construction is a very significant topic.Our research on the durability of concrete in late start, the urbanization rate is not high, the current in the second phase, roughly equal mass and maintenance of new stage, so we can learn the experience of the western developed countries, from the structure design, construction, maintenance phase, until reinforced concrete structure endurance, for our national saving precious resource.Secondly by fuzzy mathematics built concrete durability evaluation system to determine the durability coefficient, each component selection of appropriate membership function relationship between the various components of the durability evaluation matrix, and then set by the size of the mechanical components or for which the contribution, the structure of weight. Evaluation sets matrix and the weight of a higher level by that point, judgment matrix evaluation results, obtained by the method of evaluation, close to the results obtained with fuzzy mathematics, and the final conclusion.Conclusion:the last through the introduction of the existing engineering examples, and then based on the test results of concrete carbonation theory of each component testing, all life prediction of random component, according to article Kn durability coefficient of the evaluation methods of the upper structure, the durability evaluation. The upper level for the durability of structures, so we need to undertake handling class C can meet the requirements, the durability of structures can be used safely to the successor.