Low-temperature stickiness knock test equipment of asphalt and aggregate and test method thereof

A test equipment and adhesion technology, applied in the direction of flow characteristics, analysis materials, measuring devices, etc., can solve the problems of unfavorable low temperature adhesion control indicators, reduced test accuracy, eccentric impact of steel balls, etc., to achieve simple structure and operation. Convenience and longevity effect

Inactive Publication Date: 2010-10-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that in the existing asphalt-aggregate low-temperature cohesion test method, the particle size range of the aggregate is too wide and its placement is too empirical, and eccentric impact is prone to occur when the steel ball falls. Phenomena and other defects lead to lower test accuracy, which is not conducive to the determination of low-temperature adhesion control indicators, and there is no problem in providing relevant standard test equipment in the prior art, thereby providing a low-temperature adhesion of asphalt and aggregates. Impact test equipment and its test method

Method used

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  • Low-temperature stickiness knock test equipment of asphalt and aggregate and test method thereof
  • Low-temperature stickiness knock test equipment of asphalt and aggregate and test method thereof
  • Low-temperature stickiness knock test equipment of asphalt and aggregate and test method thereof

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine Figure 1 to Figure 6 Describe the low-temperature adhesion percussion test equipment for asphalt and aggregates of this embodiment, which includes a steel ball support frame 1, a specimen frame body 2, a crushed stone collection tank 3 and a specimen forming tank 4, and the crushed stones are collected The tank 3 is a tank body with an open upper end, a handle 3-1 is provided on one side of the gravel collection tank 3, the specimen frame body 2 is a tank body with an open upper end, and the middle and lower part of one side surface of the specimen frame body 2 is An opening 2-1 is provided, and the main body of the gravel collection tank 3 is arranged in the specimen frame body 2 through the opening 2-1, and the bottom surface of the specimen forming groove 4 is placed on the specimen frame body 2 upwards, and the steel ball The axes of the through hole 1-1-1 on the support frame 1, the test piece frame body 2, the gravel coll...

specific Embodiment approach 2

[0017] Specific implementation mode two: combination Figure 4 Describe the low-temperature adhesion knocking test equipment for asphalt and aggregates in this embodiment. The test piece forming groove 4 is a groove body with a closed frame 4-2 around it, and the bottom surface of the test piece forming groove 4 extends beyond the frame 4-2. 2 outside form a horizontal convex edge 4-1, when the test piece forming groove 4 is placed upside down on the test piece frame body 2, the closed frame 4-2 is located in the test piece frame body 2, and the horizontal convex edge 4-1 is located in the test piece frame body 2 the upper end of the side. Other components and connections of this embodiment are the same as those of Embodiment 1.

specific Embodiment approach 3

[0018] Specific implementation mode three: combination figure 1 and Figure 4 The low-temperature adhesive percussion test equipment for asphalt and aggregates in this embodiment is described. The height of the closed frame 4-2 of the test piece forming groove 4 is 8mm. The other components and connections of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses low-temperature stickiness knock test equipment of asphalt and aggregate and a test method thereof, relating to material performance test equipment in the civil engineering and a test method thereof, in particular to low-temperature stickiness knock test equipment of asphalt and aggregate and a test method thereof. The invention aims to solve the problems that the existing test method has wide aggregate grain diameter range and unreasonable arrangement, a steel ball is easy to be in eccentric impact, no relevant equipment is provided and the like. The test equipment comprises a steel ball support frame, a test piece frame, a macadam collecting tank and a test piece shaping tank, wherein the macadam collecting tank is pulled and drawn from the bottom of the test piece frame, and the shaping tank is arranged on the test piece frame in the mode that the bottom surface faces upwards. The test method is as follows: 1. the distance from a horizontal tube to the frame is 500 mm; 2. 100 macadams are dried; 3. hot asphalt is filled into a preheated shaping tank and is cooled after vibration; 4. macadam is put on the asphalt and is cooled after heated; 5. the shaping tank is erected, and a steel sphere falls; and 6. macadam expulsion rate is calculated. The invention is especially suitable for material selection of big-gap dewatering asphalt pavement.

Description

technical field [0001] The invention relates to a material performance test device and a test method thereof in civil engineering, in particular to a low-temperature adhesive percussion test device for asphalt and aggregates and a test method thereof. Background technique [0002] The adhesion of asphalt refers to the adhesion between asphalt and aggregates. The quality of the adhesion is directly related to the function of the lower sealing layer such as the waterproof damage ability of the asphalt pavement and the interlayer bonding ability of the base layer. The low-temperature adhesion reflects the low-temperature use performance of asphalt. The lower the low-temperature viscosity of asphalt, it means that this kind of asphalt is easy to flow at low temperature, has strong low-temperature deformation ability, and strong cracking resistance; Low-temperature deformation ability is poor, and it is easy to crack. Therefore, it is feasible to use low-temperature adhesion as a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00
Inventor 易军艳冯德成赵含权磊左文锌马宏岩赵银胡伟超
Owner HARBIN INST OF TECH
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