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Pitch mixed material compaction shear characteristic detection device in construction compaction process

A technology of asphalt mixture and detection device, which is applied in the direction of measuring device, using stable shear force to test material strength, flow characteristics, etc., can solve problems such as insufficient stability and high quality hidden dangers, and achieve good compaction effect Effect

Active Publication Date: 2019-12-20
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • 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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  • Pitch mixed material compaction shear characteristic detection device in construction compaction process
  • Pitch mixed material compaction shear characteristic detection device in construction compaction process
  • Pitch mixed material compaction shear characteristic detection device in construction compaction process

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Embodiment 1

[0057] In this embodiment, taking the AC-13C asphalt mixture on the upper layer as an example, the mixture is in the state of being paved. For example, a certain road section is compacted with three types of rollers. The selection of rolling methods is shown in Table 2:

[0058] Table 2 Rolling method of a certain section

[0059]

[0060] The initial pressure should be rolled immediately after the paver. After the static pressure of the steel drum roller is used, the compaction degree of the asphalt mixture should be measured by the 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 slowly and at a constant speed. The speed can be freely selected from 5 degrees / min to 10 degrees / min. The compaction status detection indicators are shown in Table 3:

[0061] ...

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Abstract

The invention discloses a pitch mixed material compaction shear characteristic detection device in the construction compaction process. The pitch mixed material compaction shear characteristic detection device comprises a fixed rack and a detection system, wherein the detection system comprises a displayer, a control panel, a test claw, an electric motor, a lifting switch, a torque sensor and temperature sensors, the control panel comprises a rotating speed adjuster used for controlling a power switch of the electric motor and controlling the rotating speed of the test claw, the output end ofthe electric motor is connected with the input end of the torque sensor, the output end of the torque 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 sensors are installed inside the claw-shaped blades. The pitch mixed material compaction shear characteristic detection device in the construction compaction process can easily, rapidly and accurately measure and obtain compaction-process pitch mixed material compaction detection index which forms compaction-process dual-index quality control together with the pitch road face compaction degree and can be used for accurately evaluating good and bad of the pitch mixed material compaction effect, and the compaction state of pitch mixed materials inthe compaction process is confirmed.

Description

Technical field [0001] The invention belongs to the technical field of asphalt mixture compaction detection devices, and relates to a detection device for asphalt mixture compaction and shear characteristics in the construction compaction process, which is used to evaluate the advantages and disadvantages of asphalt mixture compaction quality and based on real-time detection results Conduct corresponding monitoring and guidance on construction quality and construction process. Background technique [0002] Compaction is the last process of forming asphalt pavement. Construction compaction control is a necessary means to ensure that the quality, physical and mechanical properties and road performance of the 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 testing. ...

Claims

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Application Information

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IPC IPC(8): E01C23/01
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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