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Method for measuring voidage of asphalt concrete pavement core

A technology of asphalt concrete and measurement method, which is applied in the direction of measuring device, specific gravity measurement, permeability/surface area analysis, etc., can solve the problems that are not clearly stated in the specification, and achieve the effect of wide application environment and range, easy operation and high accuracy

Inactive Publication Date: 2013-04-10
天津市市政工程研究院
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AI Technical Summary

Problems solved by technology

How to measure the porosity of concrete core samples for asphalt pavement that cannot be tested in parallel is not clearly stated in the existing specifications

Method used

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  • Method for measuring voidage of asphalt concrete pavement core
  • Method for measuring voidage of asphalt concrete pavement core
  • Method for measuring voidage of asphalt concrete pavement core

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Embodiment Construction

[0029] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0030] A method for determining the porosity of an asphalt concrete pavement core sample, which comprises the steps of separately measuring the bulk density of the asphalt concrete pavement core sample and the maximum theoretical density of the asphalt concrete pavement core sample, and then by the formula VV = ( 1 - ρ f ρ t ) × 100 % calculated.

[0031] Among them, the steps for determining the maximum theoretical density of asphalt concrete pavement core samples are as follows:

[0032] ⑴. Prepare a long-handled s...

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Abstract

The invention relates to a method for measuring voidage of an asphalt concrete pavement core. The method is characterized by comprising the following steps of: respectively measuring the bulk density of an asphalt concrete pavement core sample and the maximum theoretical density of the asphalt concrete pavement core sample, and calculating the density according to a formula. The method for measuring voidage of the asphalt concrete pavement core is easy, convenient, feasible, real and reliable in data, low in cost and pollution-free and has high innovativeness.

Description

technical field [0001] The invention relates to a method for measuring the parameters of a concrete pavement core sample, in particular to a method for measuring the porosity of an asphalt concrete pavement core sample, which is mainly used in the evaluation of asphalt surface layers in the field of road engineering. Background technique [0002] Void ratio is a very important index to characterize the service performance of asphalt concrete pavement, and it is also one of the key factors affecting the service life of asphalt concrete pavement. The determination of the porosity of asphalt concrete pavement core samples is a very common test for the quality of asphalt pavement. Different measurement methods will reflect different levels of porosity. The scientific and accurate determination method of core sample porosity of asphalt concrete pavement has great guiding significance for objectively evaluating the stability, fatigue resistance, rutting resistance and durability o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01N9/00G01N5/00
Inventor 周卫峰于林李源渊赵永祯刘雅萍张春昱赵翔董涛胡海学张艳师蕾郑莉谷玥王国洪朱金标
Owner 天津市市政工程研究院
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