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Method for determining material composition for asphalt pavement interlayer treatment measures

A treatment measure and asphalt pavement technology, applied in the direction of testing the strength of materials by applying stable shear force, can solve problems such as unformed design methods, and achieve the effect of easy movement and operation, and light test equipment

Active Publication Date: 2015-05-27
CHINA ACAD OF TRANSPORTATION SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, various studies have not formed a systematic design method for the material composition of the interlayer treatment measures, and the test equipment used is also varied.

Method used

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  • Method for determining material composition for asphalt pavement interlayer treatment measures
  • Method for determining material composition for asphalt pavement interlayer treatment measures
  • Method for determining material composition for asphalt pavement interlayer treatment measures

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Embodiment Construction

[0036] The invention provides a method for determining the material composition of the asphalt pavement interlayer treatment measures, which mainly includes the following steps:

[0037] The test piece forming step is to use a test piece forming mold to form a plurality of test pieces to be measured, wherein the interlayer treatment measures of each test piece are different from each other in the amount of cement sprinkled, the particle size of crushed stones or the spread of crushed stones; The amount of cement spread, the particle size of crushed stone or the spread of crushed stone mentioned here are different from each other, which means that among the multiple test pieces formed, the spread of cement material in the interlayer treatment measures of any two test pieces At least one indicator of the amount of crushed stone, the particle size of the crushed stone or the amount of crushed stone spread is different from each other.

[0038] Insulate the test piece to be measur...

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Abstract

The invention discloses a method for determining material composition for asphalt pavement interlayer treatment measures. The method comprises the following steps: test-piece molding step: after test-pieces to be measured undergo thermal insulation for 5-6 h, the test-pieces are put into a shear test mold, and angle of the shear test mold is selected according to ratio of vertical load to horizontal load; after the test-pieces continuously undergo thermal insulation for 30 min, the shear test mold containing the test-pieces is put into a shear test machine for a shear measuring test; the maximum force sensed by a sensor in the shear test machine and the maximum displacement value when the maximum force is reached are recorded, and shear strength is calculated according to shear angle and shear area; the calculated shear strength is recorded into a table; and after all the test-pieces are measured and shear strength of all the test-pieces is recorded, the maximum shear strength is selected from the table. Cementing agent spraying amount, ballast grain sizes and ballast greval corresponding to the maximum shear strength are the determined material composition for asphalt pavement interlayer treatment measures.

Description

technical field [0001] The invention belongs to the technical field of highway engineering, and in particular relates to a method for determining the material composition of asphalt pavement interlayer treatment measures. Background technique [0002] Maintaining good bonding between the asphalt mixture structure layers of the asphalt pavement will significantly improve the pavement performance, but insufficient bonding between the asphalt mixture surface layers will lead to spalling, potholes, interlayer slippage and other diseases of the pavement surface. [0003] In order to ensure the effective bonding between layers of asphalt pavement on asphalt pavement, inter-layer asphalt is sprinkled and waterproof layers are often used in practice to enhance inter-layer bonding. There are four types of commonly used waterproof adhesive layers: (1) coatings, such as neoprene latex asphalt, emulsified asphalt, rubber asphalt, epoxy resin, SBS modified asphalt, etc., the thickness is...

Claims

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Application Information

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IPC IPC(8): G01N3/24
Inventor 魏道新陈景郭朝阳边莉陈明于会廉王瞳江睿南
Owner CHINA ACAD OF TRANSPORTATION SCI
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