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Sensitive material sensor for monitoring compressive stress of asphalt pavement, method of making and using

An alert material and asphalt pavement technology, applied in the field of road monitoring, can solve the problems of low survival rate and poor durability of monitoring elements, and achieve the effects of excellent alert performance, good durability and high survival rate

Active Publication Date: 2018-07-17
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because traditional monitoring components need to be pre-embedded in asphalt concrete and rolled at high temperature, this special molding process and harsh working environment make the monitoring components have low survival rate and poor durability

Method used

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  • Sensitive material sensor for monitoring compressive stress of asphalt pavement, method of making and using
  • Sensitive material sensor for monitoring compressive stress of asphalt pavement, method of making and using
  • Sensitive material sensor for monitoring compressive stress of asphalt pavement, method of making and using

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Embodiment Construction

[0042] The present invention is described in detail below in conjunction with accompanying drawing:

[0043] Such as figure 1 , 2 As shown, a smart material sensor for monitoring compressive stress on asphalt pavement includes a sensor element 1 made of smart material and capable of sensing changes in compressive stress. The sensor element 1 has two built-in electrodes, and the built-in electrode 2 needs to be connected to an external Line 3 is used for measurement, a protective layer is applied to the terminal of built-in electrode 2, and an encapsulation layer is provided on the surface of the sensor element;

[0044] Under the state of compressive stress, that is, the sensor monitors the top compressive stress of the asphalt pavement structure layer, the shape of the sensor element 1 is a cylinder, that is, a prism (triangular prism, quadrangular prism, etc.) or cylinder, and the bottom surface of the cylinder when embedded Should be parallel to the asphalt structural lay...

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PUM

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Abstract

The invention discloses a smart material sensor for monitoring bituminous pavement crushing stress, and manufacture and application methods. The sensor comprises a sensor element prepared by smart materials and capable of sensing crushing stress changes; the sensor element is internally provided with two electrodes; the outside of built-in electrodes need to be in connection with external circuits for measurement; terminals of the built-in electrodes are coated with protection layers; the surface of the sensor element is provided with a packaging layer. The smart material element possesses the characteristics of excellent smart property, and high reliability and accuracy, is the core component of the sensor, and can convert stress cases into electric signals, and be suitable for crushing stress detection.

Description

technical field [0001] The invention relates to the field of road monitoring, in particular to a smart material sensor for monitoring compressive stress of asphalt pavement and a manufacturing method thereof. Background technique [0002] Asphalt pavement is the main pavement structure in my country. Due to the complexity of asphalt pavement materials, structures, and construction techniques, mechanical analysis and on-site monitoring of asphalt pavement structures are very difficult, and it is difficult for pavement designers and users to accurately grasp the mechanical state of asphalt pavement. It is very unfavorable and leads to early damage to a large number of asphalt pavements, resulting in serious waste of engineering volume, adverse effects on traffic, and other social and environmental problems. Under the complex environment of temperature, humidity and vehicle load, the mechanical state of the asphalt concrete structural layer is very complicated. Accurately gra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/18
Inventor 姚占勇陶瑞张晓萌于腾海
Owner SHANDONG UNIV