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Method for predicting service life of hydraulic asphalt concrete

A technology of asphalt concrete and operating life, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as difficulty in predicting the life of hydraulic asphalt concrete

Active Publication Date: 2017-06-27
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a hydraulic asphalt concrete operation life prediction method to solve the difficult problem of hydraulic asphalt concrete life prediction in view of the above existing problems

Method used

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  • Method for predicting service life of hydraulic asphalt concrete
  • Method for predicting service life of hydraulic asphalt concrete
  • Method for predicting service life of hydraulic asphalt concrete

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Embodiment Construction

[0025] In this embodiment, the aging formula is deduced after on-site sampling and aging test, and the service life of the hydraulic asphalt concrete is predicted by combining the aging formula with the performance characteristics of the hydraulic asphalt concrete and the actual project operation conditions.

[0026] The derivation steps of the aging formula in this embodiment are as follows:

[0027] a. On-site coring: For hydraulic asphalt concrete anti-seepage projects, in order to deeply study and predict the life of asphalt concrete, it is necessary to take on-site coring. According to the operating life and performance status of asphalt concrete, study the current properties of asphalt concrete, Then the service life of asphalt concrete can be deduced according to its running time.

[0028] In order to make the research results closer to the actual operation, the on-site coring process should be carried out in different areas. Since the life of hydraulic asphalt concrete...

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Abstract

The invention relates to a method for predicting the service life of hydraulic asphalt concrete. The purpose of the invention is to provide a method for predicting the service life of the hydraulic asphalt concrete, so as to solve a problem of difficult prediction of the service life of the hydraulic asphalt concrete. A technical scheme of the invention is that the method comprises the following steps: collecting intensity of ultraviolet radiation of a position at which the hydraulic asphalt concrete is located at different times; calculating asphalt penetration in the hydraulic asphalt concrete at the time t by an ageing formula, wherein the ageing formula is as shown in the description; A refers to a first constant, C refers to a speed constant, alpha refers to a second constant, U refers to the intensity of the ultraviolet radiation, and P0 refers to an initial performance index of the asphalt (which is a penetration index herein); calculating based on the ageing formula to obtain a curve of change of the asphalt penetration with time; and indicating that the service life of the hydraulic asphalt concrete is t1 when the change of the asphalt penetration with time becomes steady after time t1. The method provided by the invention is suitable for prediction of the asphalt concrete ageing degree and the service life of a hydraulic asphalt concrete anti-seepage layer, a sealing layer and the like.

Description

technical field [0001] The invention relates to a method for predicting the service life of hydraulic asphalt concrete. It is suitable for predicting the aging degree of asphalt concrete such as hydraulic asphalt concrete anti-seepage layer and sealing layer and its service life. Background technique [0002] Asphalt concrete has good impermeability, excellent flexible deformation characteristics and self-healing and closing functions, so it is widely used in water conservancy and hydropower projects, especially as the anti-seepage layer of dams, and its characteristics have been brought into full play . After the founding of the People's Republic of my country, the first batch of asphalt concrete anti-seepage projects in China began to be constructed in the early 1980s. Due to the limitation of the construction level at that time, the first batch of asphalt concrete protection projects have been renovated. [0003] A batch of asphalt concrete anti-seepage projects built i...

Claims

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/004
Inventor 王登银王樱畯陆欣李强雷显阳
Owner POWERCHINA HUADONG ENG COPORATION LTD
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