Performance detection method and system of ultra-high performance concrete

By recording the room temperature cooling time points and failure process image data of ultra-high performance concrete specimens, the proportion of fiber pull-out fragments and the fractal dimension of the crack network were analyzed to generate a comprehensive aging factor and calibrate the compressive strength value. This solved the problem of strength difference after high-temperature curing and improved the reliability of project acceptance.

CN120869788BActive Publication Date: 2026-06-05新疆水发建设集团有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
新疆水发建设集团有限公司
Filing Date
2025-07-11
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing testing methods do not take into account the continuous evolution of the hydration reaction inside ultra-high performance concrete after high-temperature curing, which leads to significant strength differences in the same specimen at different resting times, affecting the reliability evaluation of project acceptance.

Method used

By recording the room temperature cooling time points of ultra-high performance concrete specimens after high-temperature curing, collecting image data of the specimen failure process, analyzing the proportion of fiber pull-out fragments and the fractal dimension of the crack network, generating a comprehensive aging factor, and calibrating the compressive strength value in conjunction with the aging correction coefficient table.

Benefits of technology

This method improves the engineering reliability of ultra-high performance concrete strength testing, eliminates aging deviations, provides a consistent engineering acceptance standard, and solves the problem of test result dispersion caused by neglecting the aging variables after curing in traditional methods.

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Abstract

The application discloses a performance detection method and system of ultra-high performance concrete, and particularly relates to the technical field of building material performance detection, and is used for solving the problem of strength test discreteness caused by the neglect of the time effect after high-temperature curing in the existing detection method; the first time point at which a test piece completes room temperature cooling and the second time point at which a press machine loads are recorded, dual quantitative analysis of the fiber pull-out fragment proportion and the crack fractal dimension in the damage process image is combined, and a comprehensive time effect factor is generated; the strength correction coefficient is matched from a preset table according to the time effect factor, and the first compressive strength test result is dynamically calibrated; the accurate correlation between the time effect damage mechanism and the macro strength is realized, and the reliability evaluation precision of the ultra-high performance concrete in major projects is significantly improved.
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