Asphalt mixture Marshall stability tester

Abstract

The invention relates to an asphalt mixture Marshall stability tester which comprises a machine frame, wherein the machine frame is provided with a testing mechanism, a thermal-insulation mechanism and a manipulator device; the testing mechanism and thermal-insulation mechanism are integrated; the testing mechanism comprises a pressure sensor, upper and lower pressure heads and a displacement sensor; the pressure sensor is installed on a fixed seat; the bottoms of the upper and lower pressure heads are connected with a post rod which is connected with an ejection motor; the displacement sensor is arranged between the upper and lower pressure heads; the thermal-insulation mechanism comprises a maintenance water tank arranged on the machine frame and a temperature sensor arranged inside the maintenance water tank; the bottom of the maintenance water tank is provided with a heating tube; and the manipulator device comprises a lifting part and a horizontal transportation part. The tester implements thermal insulation on the test sample through the maintenance water tank; since the maintenance water tank and tester are integrated, the test sample can be moved by the operation of the manipulator on the premise of no heat dissipation of the test sample; and the tester is simple to operate, is intelligent and convenient, and has high test precision.

Description

technical field [0001] The invention relates to the technical field of asphalt mixture testing instruments, in particular to an asphalt mixture Marshall stability tester. Background technique [0002] The stability of asphalt mixture is an important test content of asphalt mixture quality inspection, which can measure the failure load and deformation resistance of asphalt mixture. [0003] Asphalt mixture Marshall stability tester is divided into automatic and manual. The automatic Marshall tester should have a control device, record the load-displacement curve, automatically measure the load and the vertical deformation of the test piece, and can automatically display and store or print the test For functions such as results, the manual type is manually operated, and the test data is read after the operator's visual inspection. [0004] The Marshall test is a test project in the design of asphalt mixture ratio and the quality control of asphalt pavement construction, and t...

AI Technical Summary

Problems solved by technology

[0005] However, when the current asphalt mixture Marshall stability tester is used to test the specimen, since the heat preservation device and the test device are set separately, the temperature of the specimen will be lost during the handling process, which will affect the accuracy of the test results. In the technology, the device for heat preservation of the test piece is separated from the test part, so that the time for the test piece to be placed in the tester after heat preservation is long, resulting in heat loss, and it is necessary to avoid artificial burns in the process of picking up the test piece, so , the current Asphalt Mixture Marshall Stability Tester has deficiencies, the heat preservation of the specimen is set separately from the test process, and it is difficult to ensure a constant temperature during the test process, and the test deviation is large, resulting in inaccurate final data

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