Improvement of Concrete Compressive Strength Evaluation Method for Safety Assessment of Existing Structures

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This research aims to analyze the limitations of existing concrete compressive strength evaluation criteria and propose improvements for precise safety assessments of structures.
Proposed three evaluation methods based on field conditions: regression model with core and non-destructive tests, minimum value statistical correction for limited core samples, and applying conservative multipliers in non-core situations.
Developed guidelines aligning with international standards like EN and JCI regarding the acceptance of small core specimens and test location selection.
Utilized case studies with actual structural data to validate the proposed evaluation methods.
The proposed methods addressed the underestimation issues in existing KDS standards, achieving more reliable evaluation inputs.
Demonstrated better handling of data uncertainty in concrete strength assessments.
Confirmed the applicability and effectiveness of the improved evaluation criteria in real-world scenarios.

Evaluates concrete strength assessment methods for existing structures, suggesting improved safety standards.

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Park et al. (2026) studied this question.

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