Concrete water content detection device and method
A detection device and concrete technology, which can be used in water resources assessment, electromagnetic wave detection, climate sustainability, etc., can solve the problems of large moisture content error, poor speed accuracy, complex calculation, etc., and achieve high precision and high synchronization accuracy of results Effect
Inactive Publication Date: 2015-10-07
INST OF ELECTRONICS CHINESE ACAD OF SCI
View PDF3 Cites 15 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0012] The main technical defect: the main difficulty in measuring the moisture content in concrete with ground penetrating radar technology is how to accurately obtain the propagation velocity v of radar waves in concrete
This method is complex to calculate, and at the same time, the speed accuracy obtained is poor, so the obtained water content has a large error
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0034] The present invention is based on ground penetrating radar technology and electromagnetic induction technology, please refer to figure 2 It is the figure of concrete water content detector of the present invention, steel bar meter 1 and ground penetrating radar 2 are formed, a set of ground penetrating radar 2 and a set of steel bar meter 1 are integrated into a set of concrete water content detector, steel bar meter 1 and ground penetrating radar 2 are Wireless connection; ground penetrating radar and reinforcement meter, used to obtain concrete moisture content and concrete relative permittivity, and according to the relationship between concrete moisture content and concrete relative permittivity, the concrete m...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a concrete water content detection device and method. The device comprises a steel bar instrument and a ground penetrating radar which are in wireless connection. The ground penetrating radar and the steel bar instrument are used for obtaining a concrete water content and a relative dielectric constant of concrete and obtaining the concrete water content according to the relation of the concrete water content and a relative dielectric constant of concrete. The method comprises seven steps: a diameter of steel bars in concrete is set; radar echo data and steel bar signal data reflected by the steel bars are obtained; a two-dimensional radar image is obtained; a present steel bar protection layer thickness and present steel bar reflection time are obtained; a propagation speed of an electromagnetic radar wave in the concrete is obtained; a relative dielectric constant of the concrete is obtained; according to the relation of the concrete water content and the relative dielectric constant of the concrete, the present practical concrete water content is obtained. During detection, the ground penetrating radar and the steel bar instrument work at the same time and obtain results synchronously, thus the provided detection method has higher precision, is more efficient and more convenient compared with a traditional measuring method.
Description
technical field [0001] The invention relates to the technical field of engineering detection, in particular to a device and method for measuring the moisture content of concrete. Background technique [0002] The moisture content of concrete has a great influence on its material properties. The moisture content of concrete affects the water absorption and frost resistance of concrete, and at the same time has a great influence on the strength of concrete materials. Studies have shown that under normal temperature conditions, the strength of the same concrete tends to decrease with the increase of water content. The moisture content of concrete has an important influence on concrete strength development, shrinkage, creep, carbonation, freeze-thaw and other durability issues. If the moisture content in concrete can be detected accurately and quickly, it will be of practical value for more accurately determining the performance of concrete. [0003] At present, there are main...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01V3/12
CPCY02A90/30
Inventor 叶盛波方广有高云泽
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI