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Method for determining workability of cold patch asphalt mixture

A technology of cold-patch asphalt and mixture, applied in flow characteristics, measuring devices, and analysis materials, etc., can solve the problem that the construction and workability of cold-patch asphalt mixture are not objective, and achieve the goal of overcoming subjective factors, clear methods, The effect of data analysis convenience

Inactive Publication Date: 2020-05-08
HEILONGJIANG LONGJIAN ROAD & BRIDGE THE 6TH ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the construction workability judgment of cold-patch asphalt mixture in low-temperature construction has no objective, based on experimental parameters with significant physical significance or based on numerical judgment methods, and provides a method for determining the construction and workability of cold-patch asphalt mixture. easy method

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  • Method for determining workability of cold patch asphalt mixture
  • Method for determining workability of cold patch asphalt mixture
  • Method for determining workability of cold patch asphalt mixture

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specific Embodiment approach 1

[0018] Specific implementation mode 1: This implementation mode records a method for measuring the workability of cold-patch asphalt mixture, such as figure 1 and 2 As shown, the method is:

[0019] Put the mixed cold patched asphalt mixture into the test mold, level the surface after loading, put the mixture together with the test mold on the cement vibrating table and vibrate for 10 times, and then put the test mold on the disc of the press , after zeroing, carry out uniform penetration, penetrate to the same depth within the same time, record the penetration depth and resistance value, the construction workability is better if the penetration resistance is small, otherwise, the construction workability is poor.

specific Embodiment approach 2

[0020] Specific embodiment two: a method for measuring the workability of cold-patch asphalt mixture described in specific embodiment one, the device for realizing penetration is a CBR loading device or a mortar setting time tester, which can realize steady penetration and Measure penetration resistance.

specific Embodiment approach 3

[0021] Specific embodiment three: a method for measuring the construction workability of cold-patch asphalt mixture described in specific embodiment two, the parameters of the CBR loading device are: the diameter of the penetrating rod is 30+1mm, the contact surface is a plane, and the length Not less than 50mm.

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Abstract

The invention discloses a method for determining workability of a cold patch asphalt mixture, and belongs to the technical field of asphalt mixture performance testing. The invention aims to solve theproblem that no objective experimental parameters based on remarkable physical significance or numerical judgment method exists in construction workability judgment of a cold patch asphalt mixture inlow-temperature construction. A mixed cold patch asphalt mixture is loaded into a test mold, the surface is leveled after loading, the mixture and the test mold are placed on a cement vibration tabletogether to vibrate 10 times, then the test mold is placed on a disc of a pressure device, constant-speed injection is conducted after zero setting, the same depth is injected within the same time, and the injection depth and the resistance value are recorded. The design conforms to the actual paving and compacting mechanism, the method is clear, the operation and principle are simple, and data analysis is convenient. According to the method, standard experiments and numerical analysis are adopted to evaluate the construction workability of the cold patch asphalt mixture for pavement engineering repair, so that subjective factors of people are overcome, a more scientific experimental method is provided, and judgment has more scientific basis.

Description

technical field [0001] The invention belongs to the technical field of performance testing of asphalt mixtures, and in particular relates to a method for measuring the workability of cold patched asphalt mixtures. Background technique [0002] The working performance of cold-patch asphalt mixture is mainly reflected in two aspects: one is to have good construction workability, it is not easy to agglomerate or slightly agglomerate after a certain storage period, and it can be easily loosened under the action of external force , to facilitate paving and leveling during the construction process; second, the cold-patch asphalt mixture should have good compactability. Withstand vehicle loads and environmental effects. At present, for the workability of construction, only the empirical, hand kneading method is used to evaluate the workability of cold-patch asphalt mixture. Specifically: grab the mixed material with your hands, squeeze it tightly with your hands and observe wheth...

Claims

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Application Information

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IPC IPC(8): G01N11/12
CPCG01N11/12
Inventor 王伟波纪伦谭洪亮孙勇周晓峰陈彬刘航吴宗玺刘世佳国又非蔡显威邹勇郝晟
Owner HEILONGJIANG LONGJIAN ROAD & BRIDGE THE 6TH ENG