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Research of the Traffic Weighting Monitoring System Based on the Pressure-sensitivity of CFRC

Author: JianHuaLi
Tutor: XieHuiCai
School: Shantou University
Course: Structural Engineering
Keywords: Carbon fiber reinforced concrete Coarse aggregate Varistor properties The resistor relative change rate Load classification
CLC: U414
Type: Master's thesis
Year: 2004
Downloads: 114
Quote: 7
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Abstract


Carbon fiber reinforced cement-based composites have received increasing attention as an important branch of intelligent materials and its role, but more research is still carbon fiber reinforced cement mortar (CFRM), coarse aggregate carbon fiber reinforced concrete (CFRC) is less involved. The introduction of the coarse aggregate more different carbon fiber reinforced concrete performance carbon fiber cement mortar. The pressure-sensitive nature of the carbon fiber reinforced concrete is a very important aspect of its many performance. The study found that the the: of CFRC resistance relative rate of change there is a one-to-one relationship between the imposed loads and suffered Δρ / ρ 0 . This paper attempts to the principle of the pressure-sensitive traffic weighing system. First of all, as the research object, a cube specimen CFRC's production process and test equipment. Testing of carbon fiber reinforced concrete splitting tensile and compressive mechanical properties, electrical properties, and the pressure-sensitive performance under cyclic loading, determined by a comprehensive comparison of the mechanical and pressure-sensitive performance a reasonable carbon fiber concrete formulations. Second, the study of the impact of environmental factors on the the the CFRC electrical and pressure sensitive performance, mainly considering the temperature and moisture content of both environmental factors. Age of concrete, load cycles and other factors also study the impact of its pressure-sensitive performance stability. The results of CFRC pressure sensitive stabilized with increasing age and load cycle. The study of the the heavy monitoring system based on pressure-sensitive performance car is the focus of this article. First, the working principle of the proposed system, the structural design of the system programs. Secondly, laboratory simulation test system. Common models statistical load classification, to determine the the load load level of the laboratory. Grading fluctuating load to simulate actual traffic loads, pressure-sensitive performance test grading load. Focuses on the stability problems of the lateral movement of the load along the road system, as well as signal fast acquisition method. By optimizing the electrode arrangement and connection, and achieved good results. In addition, speed, load, and specimen contact area of ??pressure sensitive. The results showed that: CFRC Composites the resistance Δρ / ρ 0 of the peak relative to the rate of change also has obvious classification corresponding to the different levels of load resistance of the different levels of the relative rate of change in the effect of grading load. This provides a theoretical support for CFRC application in the field of actual traffic monitoring, found an innovative method for load monitoring of traffic roads.

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