Concrete Deterioration Assessment via Time-Period Prediction
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Solution Overview
Problem
Current methods for assessing deterioration in concrete structures require destructive testing, which is costly and time-consuming, and may not be feasible for large numbers of structures, especially those where bearing force reduction is undesirable.
Innovation Solution
A non-destructive assessment method and device that determine the presence of deterioration-causing materials by calculating the shortest period for aging-induced deterioration and the longest period for material-induced deterioration, allowing for efficient maintenance management without damaging the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If destructive testing is used to assess deterioration causing materials, then measurement precision is improved, but loss of time and loss of substance increase
Solution Approach 1:
The patent applies preliminary action by calculating the appearance periods of deterioration before actual deterioration occurs. By determining the shortest period for aging-induced deterioration and the longest period for material-induced deterioration, the system can predict which type of deterioration will occur first, enabling proactive assessment without waiting for actual deterioration symptoms to manifest.
Solution Approach 2:
The patent uses the concept of 'appearance period' as an intermediary parameter to bridge the gap between current structure state and future deterioration. Instead of directly measuring deterioration (which requires destruction), the system calculates time periods as intermediate values that indicate potential deterioration types, allowing non-destructive assessment.
2Measurement precision
If destructive testing is used to assess deterioration causing materials, then measurement precision is improved, but loss of time and loss of substance increase
Solution Approach 1:
The patent uses the concept of 'appearance period' as an intermediary parameter to bridge the gap between current structure state and future deterioration. Instead of directly measuring deterioration (which requires destruction), the system calculates time periods as intermediate values that indicate potential deterioration types, allowing non-destructive assessment.
Solution Approach 2:
The patent replaces the mechanical destructive testing system with a computational prediction system. Instead of physically breaking concrete to extract specimens for laboratory analysis, the system uses calculations based on structure age and deterioration models to predict deterioration types, substituting physical destruction with information processing.
3Productivity
If the number of concrete structures to be examined is enormous, then productivity is improved through batch processing, but device complexity increases due to heavy testing load
Solution Approach 1:
The patent extracts the essential assessment function from complex physical testing equipment. By taking out only the critical information needed (structure age and deterioration type prediction) and removing the need for physical specimen extraction and laboratory analysis, the system can process enormous numbers of structures using simple computational methods rather than complex testing apparatus.
Data Source
AI summary
An assessment device (1) according to the present disclosure includes a determination unit (10) that determines a first period corresponding to a shortest period until deterioration of a concrete structure due to an aging-induced deterioration cause appears and a second period shorter than the first period and corresponding to a longest period until deterioration of the concrete structure due to a material-induced deterioration cause appears and an assessment unit (20) that assesses that a deterioration causing material is used in a concrete structure having, in a checking result indicating a period elapsed from construction of the concrete structure and the presence or absence of deterioration in the concrete structure, the deterioration and the period elapsed from the construction which is not shorter than the second period and is shorter than the first period.