Asphalt mixture shearing parameter determinator

Abstract

The invention discloses an asphalt mixture shearing parameter determinator comprising a rack, a driving motor, a shearing mould for fixing a sample, a shearing tool for shearing the sample, a force-applying mechanism for applying controllable positive pressure on the sample from the top down in the shearing process, a force sensor for detecting the shearing force applied on the sample on a real-time basis, a data acquisition system and a host computer, wherein, the shearing mould comprises a horizontal and a vertical shearing moulds; the shearing tool comprises a horizontal and a vertical shearing tools correspondingly; and the host computer is a computer capable of obtaining the data of shearing strength corresponding to the sample to be detected under different positive pressure throughinternal processing operation and calculating the shearing parameter of the sample according to the data of the shearing strength obtained through the detection of horizontal and vertical shearing. The invention has the advantages of reasonable design, high intelligentization, reliable performance, comprehensive functions and accurate detection results; and the invention can overcome the shortcomings of complex technique of current instruments, longer experimental period and non-conformity of detection results with the road performance in practical application in the prior art.

Description

technical field [0001] The invention relates to an instrument for testing shear strength, in particular to an asphalt mixture shear parameter tester. Background technique [0002] The road structure and bridge deck pavement structure using asphalt mixture often have rutting, wrapping, uplift and other damage due to the insufficient high temperature shear resistance of asphalt mixture, so the above roads have to be overhauled or renovated, resulting in Huge economic loss. my country's highway industry specification does not clearly stipulate the shear index of asphalt mixture when designing asphalt mixture gradation, so that the shear performance of asphalt mixture is not fully considered when determining the asphalt mixture gradation. Hidden dangers have been laid for the destruction of road and bridge deck pavement in the future. Existing instruments for testing the shear performance of asphalt mixtures have not been popularized and used for various reasons, and some of th...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an asphalt mixture shear parameter measuring instrument, which is reasonable in design, easy to use and operate, high in intelligence, reliable in performance, complete in function, and accurate in test results. Accurate, can effectively overcome the defects and deficiencies of the existing instrument technology complexity, long experiment time, and test results that cannot be inconsistent with the actual road performance of the road

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