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Method for testing interaction capacity of asphaltum and aggregate

A technology of interaction and detection method, which is applied in the field of detection, can solve the problems of uncertain evaluation index of asphalt-aggregate interaction ability, poor reproducibility of test data, and difficulty in accurately grasping test conditions, etc.

Inactive Publication Date: 2008-04-16
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 problems that the existing asphalt-aggregate interaction ability evaluation index is not quantitative, the test conditions are difficult to accurately grasp, the test data reproducibility is poor, and the interaction ability between asphalt and aggregate cannot be directly characterized. Test method for interaction ability between asphalt and aggregate

Method used

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  • Method for testing interaction capacity of asphaltum and aggregate
  • Method for testing interaction capacity of asphaltum and aggregate

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specific Embodiment approach 1

[0005] Specific embodiment one: the method of this embodiment is realized according to the following steps: one, the preparation of asphalt mortar: a, preparation aggregate (stone material) powder, after stone material is removed surface impurity, utilize vibration mill that stone material is ground into Uniform powder particles, the particle size of the powder particles is ≤0.15mm, use a 0.075mm square hole sieve to sieve the powder particles into two grades of m , the phase angle δ of the asphalt mortar c , complex elastic modulus G * and complex viscosity η * And other rheological indicators, so as to determine the interaction ability of asphalt and aggregate. The aggregate is limestone, basalt, sand or granite.

specific Embodiment approach 2

[0006] Embodiment 2: In this embodiment, the weight ratio of asphalt and powder particles is 1:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0007] Specific implementation mode three: this implementation mode is placed in an oven with a temperature of 100°C for health preservation. Others are the same as in the first embodiment.

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Abstract

The invention provides a method for detecting the interaction capability between asphalt and aggregate and relates to a detection method. The objective of the invention is to solve the problems that the evaluation criterion of the prior interaction capability between asphalt and aggregate can not be quantified, the test conditions are difficult to be controlled precisely, the repeatability of test data is poor and the interaction capability between asphalt and aggregate can not be demonstrated directly. In the invention, asphalt and dusty kernel are mixed evenly at the proportion of weight from one to zero point eight to one to one point two to generate asphalt mastic; the evenly mixed asphalt mastic of zero point eight to one point two grams is arranged on a lower flat board of a flat board fixture with the diameter of twenty five millimeters and is preserved in the mixed liquor of water and glycol of twenty DEG C to thirty DEG C for fifteen minutes to twenty five minutes; the test time is one hundred to one hundred and forty seconds. The data obtained from the invention is more quantified and the impact by the artificial factors are greatly reduced; the repeatability of the test data is good; the test is performed in a scenario of an simulated road environment and with traffic loads, which is more close to the real road traffic conditions, and the physical meaning of the evaluation criterion is more specified and the interaction capability between asphalt and aggregate can be reflected.

Description

technical field [0001] The invention relates to a detection method. Background technique [0002] With the widespread use of asphalt pavement in high-grade highways, the problems of its durability and early failure of pavement structure are becoming more and more prominent. Studies have shown that the failure phenomenon of asphalt pavement has a great relationship with the properties of the asphalt and aggregate interface area. The interaction ability between asphalt and aggregate is an important factor affecting the performance of asphalt mixture, which directly affects the basic road performance such as strength, high temperature stability, water stability and fatigue resistance of asphalt mixture. Therefore, it is of great significance to deeply study the evaluation index of the interaction ability of asphalt and aggregate, and then analyze its influencing factors, reveal its mechanism of action, fully understand and actively improve this action process. At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/10G01N33/42
Inventor 谭忆秋李晓民吴建涛
Owner HARBIN INST OF TECH
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