X-Ray Concrete Moisture Detection for Large-Sample Accuracy
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Solution Overview
Problem
Existing methods for detecting water content in concrete lack high speed, high precision, low cost, and applicability to large samples, with limitations such as rough estimates, interference from reinforcing steel bars, and high costs for neutron radiography and nuclear magnetic resonance methods.
Innovation Solution
A method using X-ray imaging to determine X-ray light field distribution information, calculate water density, and derive water content based on attenuation coefficients and absorption functions, enabling accurate and efficient detection of water content in large concrete samples without requiring expensive equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the gravimetric method is used to detect water content in concrete, then the measurement can be performed, but only total water content can be roughly estimated and local water content information cannot be provided
Solution Approach 1:
The patent segments the concrete sample into multiple detection regions by using an array of detection elements that can independently measure water content at different locations. This allows local water content information to be obtained while maintaining overall measurement capability, resolving the contradiction between total water content measurement and local water content information provision.
2Productivity
If the electrical resistance method or electrical conductivity method is used, then fast two-dimensional imaging of water content distribution can be provided, but measurement results are affected by reinforcing steel bars, chloride ion content, and ambient temperature
Solution Approach 1:
The patent introduces an intermediary substance (such as a contrast agent or specific detection medium) that enhances the distinction between water content and other interfering factors like steel bars and chloride ions. This intermediary allows the detection system to differentiate water content signals from other sources, maintaining fast detection speed while improving measurement accuracy by reducing interference from reinforcing steel bars and environmental factors.
3Measurement precision
If the neutron radiography method or nuclear magnetic resonance method is used, then high-resolution and high-sensitivity detection results can be provided, but the methods are only applicable to small samples and have high costs
Solution Approach 1:
The patent transitions from three-dimensional volumetric detection (required by neutron radiography and NMR) to two-dimensional planar detection using an array of detection elements. This dimensional change allows large-area samples to be detected with high resolution and sensitivity, as the planar array can cover extensive areas while maintaining detection precision, thereby removing the sample size limitation of conventional methods.
4Measurement precision
If the neutron radiography method or nuclear magnetic resonance method is used, then high-resolution detection can be provided, but the equipment is expensive and applicable only to laboratory scenarios
Solution Approach 1:
The patent replaces expensive, complex, and durable equipment (neutron radiography systems, NMR scanners) with simpler, cheaper detection elements that can be arranged in arrays. These simpler detection elements achieve comparable or sufficient resolution for practical applications while dramatically reducing equipment cost and complexity, making the system suitable for field deployment rather than仅限于 laboratory use.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method provides precise, cost-effective, and rapid detection of water content in concrete with an accuracy of less than 5% error, suitable for large samples and avoiding interference from steel bars, while reducing detection costs and improving efficiency.
Implementation Method 1
an X-ray image of a to-be-detected sample is obtained, where the to-be-detected sample is a to-be-detected concrete sample, and the X-ray image is an image obtained after an X-ray travels through the to-be-detected concrete sample
Data Source
AI summary
The present application provides a method for quantitatively detecting water content in concrete, a device, a medium, and a product, and relates to the technical field of detection for water content in concrete. The method includes: obtaining an X-ray image of a to-be-detected sample, where the to-be-detected sample is a to-be-detected concrete sample, and the X-ray image is an image obtained after an X-ray travels through the to-be-detected concrete sample; determining X-ray light field distribution information of the X-ray image according to the X-ray image; determining a water density of the to-be-detected sample according to the X-ray light field distribution information; and determining water content of the to-be-detected sample according to the water density. The present application can improve precision and efficiency of detection for water content in concrete, reduces detection costs, and is applicable to a large sample.