Pavement cracking monitoring method based on pulling sensitive effect of conducting polymers

Abstract

The invention discloses a pavement cracking monitoring method based on the pulling sensitive effect of conducting polymers. The pavement cracking monitoring method particularly includes the steps that the surfaces of conducting polymers are additionally coated by a damp-proof high-temperature-resistant protective coating; the relation between the tensile strain value of the conducting polymers and the resistivity of polymers is measured, and when the resistivity of the polymers dose not change, the measured tensile strain value of the conducting polymers is the allowable tensile strain value of the conducting polymers; when a pavement is paved, the conducting polymers are paved in the pavement, and wires which make good contact with the polymers are led from the conducting polymers; the resistance of the conducting polymers is measured in real time, and the actual tensile strain value of the conducting polymers is determined; the actual tensile strain value of the conducting polymers is compared with the allowable tensile strain value of the conducting polymers, and if the actual tensile strain value is higher than the allowable tensile strain value of the polymers, the pavement is likely to crack, and preventive maintenance measures are taken to the pavement. By the adoption of the pavement cracking monitoring method, the situation that people discover cracks of the pavement after the pavement is cracked can be avoided, a large amount of money is saved, and the project amount is reduced.

Description

technical field [0001] The invention relates to a method for monitoring pavement cracking, in particular to a method for monitoring pavement cracking based on the pull-sensitivity effect of conductive polymers. Background technique [0002] In existing roads, the occurrence rate of pavement diseases is relatively high, among which pavement cracks account for a very high proportion. Pavement cracking has always been the main failure form of pavement in my country, but the understanding of cracking mechanism still lags behind engineering practice, especially the research on crack evolution tracking test method and prediction and early warning technology is very little, although its importance has attracted people's great attention , but at present, the test of pavement cracks is mainly carried out after cracking, and internal cracks are tested by ground radar, which has low accuracy and cannot track the evolution and development of cracks, which delays the best timing of preven...

AI Technical Summary

Problems solved by technology

Pavement cracking has always been the main failure form of pavement in my country, but the understanding of cracking mechanism still lags behind engineering practice, especially the research on crack evolution tracking test method and prediction and early warning technology is very little, although its importance has attracted people's great attention , but at present, the test of pavement cracks is mainly carried out after cracking, and internal cracks are tested by geological radar, which has low precision and cannot track the evolution and development of cracks, which delays the best timing of preventive maintenance

Some scholars also use fiber grating technology to test the deformation of the road surface, but the cost of testing is high, which is not conducive to large-scale testing

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