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A device for detecting the compaction shear characteristics of asphalt mixture during construction compaction

A technology of asphalt mixture and detection device, which is applied in the direction of measuring device, using a stable shear force to test the strength and flow characteristics of materials, can solve the problems of large hidden dangers in quality and insufficient stability, and achieve simple operation and good pressure. Real effect, strong implementable effect

Active Publication Date: 2021-07-30
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Aiming at the technical deficiencies of the existing single compaction degree index in the control of the pavement compaction process, the stability is relatively insufficient and the quality hidden danger is relatively large, the purpose of the present invention is to provide a The characteristic detection device can simply, quickly and accurately measure the compaction detection index of the asphalt mixture during the compaction process, and combine it with the existing compaction degree to form a dual-index control, which can be used to accurately evaluate the compactness of the asphalt mixture. Determine the compaction status of the asphalt mixture during the construction process, and adjust and control the construction process and construction quality in a timely manner according to the test results

Method used

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  • A device for detecting the compaction shear characteristics of asphalt mixture during construction compaction
  • A device for detecting the compaction shear characteristics of asphalt mixture during construction compaction
  • A device for detecting the compaction shear characteristics of asphalt mixture during construction compaction

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Embodiment 1

[0056] In this embodiment, take the AC-13C asphalt mixture on the upper layer as an example. The mixture is in the state after paving. For example, three types of road rollers are used for compaction in a certain road section. The selection of rolling methods is shown in Table 2:

[0057] Table 2 Rolling method of a road section

[0058]

[0059] The initial pressure should be rolled immediately after the paver. After static pressure with steel cylinder roller, the compactness of asphalt mixture should be measured by non-nuclear density meter, and the real-time compaction detection of the mixture should be measured by the compaction shear characteristic detection device. Index K / K min and the internal temperature T of the mixture. Among them, the electric motor drives the stirring shaft to rotate at a slow and uniform speed, and the speed can be freely selected from 5 degrees / min to 10 degrees / min. The compaction status detection indicators are shown in Table 3:

[0060] ...

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Abstract

The invention discloses a detection device for the compaction shear characteristic of asphalt mixture in the construction compaction process, which includes a fixed frame and a detection system, and the detection system includes a display, a control panel, a test claw, an electric motor, a lifting switch, a torque Sensors and temperature sensors, the control panel includes a power switch for controlling the electric motor and a speed regulator for controlling the rotation speed of the test jaws, the output of the electric motor is connected to the input of the torque sensor, the torque The output end of the sensor is connected with the input end of the test claw, the output end of the test claw is provided with claw-shaped blades, and the temperature sensor is installed in the claw-shaped blades. The invention can simply, quickly and accurately measure the compaction detection index of the asphalt mixture in the compaction process, together with the compaction degree of the asphalt pavement, it forms a dual-index quality control of the compaction process, which can be used to accurately evaluate the compaction effect of the asphalt mixture The advantages and disadvantages of the asphalt mixture in the construction process to determine the compaction state.

Description

technical field [0001] The invention belongs to the technical field of asphalt mixture compaction detection devices, and relates to a detection device for the compaction and shear characteristics of asphalt mixture in the construction compaction process, which is used for evaluating the quality of asphalt mixture compaction, and according to the real-time detection results Monitor and guide the construction quality and construction process accordingly. Background technique [0002] Compaction is the last process of asphalt pavement forming, and construction compaction control is a necessary means to ensure the quality, physical and mechanical properties and road performance of asphalt mixture meet the requirements. my country's asphalt pavement construction technical specifications stipulate the compaction control indicators and methods of asphalt pavement, and make detailed regulations on the location, frequency, and allowable deviation of the test. The traditional compacti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/22E01C23/01
CPCE01C23/01G01N33/42G01N3/22G01N3/24G01N2203/0248G01N2203/0025G01N2203/0021G01N2203/0078G01N11/14G01N2203/0003
Inventor 钱国平于华南史长云龚湘兵李希蔡军吴文超
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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