A MULTI-ENVIRONMENTAL TIME SIMILARITY THEORY OF LIFE PREDICTION ON COASTAL CONCRETE STRUCTURAL DURABILITY

A multi-environmental time similarity (NETS) theory is presented for durability assessment and life prediction by introducing a third reference site with a certain service life and the similar aggressive environment to the study objective to bridge the field inspections and the indoor accelerated tests. The correlation between the field inspection data and the results of indoor tests in accelerated environments is established based on the METS. Furthermore, the results of indoor tests are used to predict service life of concrete structures effectively. The theoretical model and experimental method of METS is introduced and the life prediction of various structural components can be carried out by similarity analyzing the main influence factors of coastal concrete structural durability between indoor and outdoor actual environments. Based on METS, life prediction of concrete structural durability of a practical project is analyzed in detail. The prediction results are reasonable, creditable and convictive by comparing with other prediction methods.