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A comprehensive low-temperature performance testing equipment for asphalt mixture

A technology of asphalt mixture and low temperature performance, which is applied to material inspection products, using stable tension/pressure testing material strength, measuring devices, etc., can solve the problem of low accuracy, poor versatility, The problem of high test cost is to achieve the effect of diversifying functions, reducing stability and improving time efficiency.

Active Publication Date: 2018-10-09
黑龙江省工研院资产经营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a comprehensive low-temperature performance testing equipment for asphalt mixture, so as to solve the problem that the low-temperature shrinkage test, low-temperature stress relaxation test and freeze-off test need to rely on different equipment, and there are high test costs due to the poor versatility of the equipment. At the same time, there is the problem of low accuracy of the detection results of asphalt mixture specimens

Method used

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  • A comprehensive low-temperature performance testing equipment for asphalt mixture
  • A comprehensive low-temperature performance testing equipment for asphalt mixture
  • A comprehensive low-temperature performance testing equipment for asphalt mixture

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specific Embodiment approach 1

[0029] Specific implementation mode one: combine figure 1 , figure 2 , image 3 and Figure 4 Describe this embodiment, this embodiment comprises environment box 1, counter force frame 2, displacement measurement system 3, data acquisition control system, microcosmic data acquisition system and heating system;

[0030] Described data acquisition control system comprises PC machine 4-1, controller acquisition card 4-2, motor driver 4-3, motor 4-4, transmission device 4-5 and stress sensor 4-6, PC machine 4-1 The controller acquisition card 4-2 is electrically connected to the motor driver 4-3, the motor driver 4-3 is electrically connected to the motor 4-4, and the motor 4-4 is connected to the asphalt mixture sample through the transmission device 4-5 9 phases are connected, and the controller acquisition card 4-2 is connected with the asphalt mixture test piece 9 through the stress sensor 4-6;

[0031] The microscopic data acquisition system includes a digital speckle ca...

specific Embodiment approach 2

[0037] Specific implementation mode two: combination figure 1 and figure 2 Describe this embodiment, the displacement measurement system 3 in this embodiment includes a base 3-1, a total transverse support 3-2, two vertical supports 3-3, two sub-horizontal supports 3-4, two steering knuckles 3-5 and two LVDT rebound position sensors 3-6, the two vertical supports 3-3 are vertically arranged side by side on the base 3-1, and each vertical support 3-3 passes through the base 3-1 It is fixedly connected with the reaction force frame 2, and the total horizontal support 3-2 is horizontally arranged on two vertical supports 3-3 and is respectively slidably matched with each vertical support 3-3, and the two ends of the total horizontal support 3-2 Each is connected to a sub-transverse support 3-4 through a steering knuckle 3-5, and each sub-transverse support 3-4 is provided with an LVDT rebound type position sensor 3-6, and each LVDT rebound type position sensor 3 The probe of -...

specific Embodiment approach 3

[0041] Specific implementation mode three: combination figure 1 , figure 2 and Figure 4 This embodiment is described. In this embodiment, the motor 4-4 is a stepping motor, and the stress sensor 4-6 is a tension and compression stress sensor. In this embodiment, no vibration occurs during the test process through the setting of the stepping motor, and the impact on the test accuracy caused by the vibration of the motor is minimized. Stress sensors 4-6 are tension and compression stress sensors that effectively improve test accuracy. Other unmentioned structures and connections are the same as those in the first or second embodiment.

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Abstract

The invention discloses a comprehensive bituminous-mixture low-temperature-performance detection device, and relates to a comprehensive detection device. A low-temperature shrinkage test, a low-temperature stress relaxation test and a freezing breaking test need to be carried out through different devices, the problems that as the universality of the devices is poor, test cost is high, and meanwhile the accuracy of the detection result of a bituminous-mixture testing piece is low exist. The comprehensive bituminous-mixture low-temperature-performance detection device comprises an environmental box, a counterforce frame, a displacement measuring system, a data collecting control system, a micro-data collecting system and a heating system. The environmental box is arranged in the counterforce frame, a digital speckle camera faces to a visible window of the environmental box, a bituminous-mixture testing piece is arranged in the environmental box, one end of the bituminous-mixture testing piece is connected with a motor sequentially through a dowel steel and a transmission device, the other end of the bituminous-mixture testing piece is connected with a stress sensor through the other dowel steel, and the displacement measuring system is arranged outside the environmental box and connected with the counterforce frame. The comprehensive bituminous-mixture low-temperature-performance detection device is used for detecting the low-temperature performance of bitumen.

Description

technical field [0001] The invention specifically relates to a comprehensive low-temperature performance testing device for asphalt mixture. Background technique [0002] For the low-temperature cracking of asphalt pavement, domestic and foreign scholars have always insisted on using the theory and method of viscoelasticity as the basis of applied research in the research of asphalt mixture technical standards and technical specifications in the past 30 years, and viscoelasticity itself is a As a discipline based on experiments, the correct implementation of scientific and valuable quantitative measurements is undoubtedly of great significance to both theoretical development and scientific experiments. In the past inventions of test equipment for low-temperature performance testing, the influence of temperature on the components of the equipment and the sensor itself was often ignored, which reduced the accuracy of the test results. This process is also one of the extremely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18G01N25/00G01N33/42
CPCG01N3/18G01N25/00G01N33/42G01N2203/0017G01N2203/0067G01N2203/0085
Inventor 张磊刘明鹏孙志棋高飞谭忆秋纪伦邢超李添帅
Owner 黑龙江省工研院资产经营管理有限公司
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