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Indoor test estimation method for estimating bituminous pavement rut

A technology for asphalt pavement and indoor testing, which is applied in the direction of roads, roads, road repairs, etc. It can solve the problems of inconvenient determination of calculation parameters, unreasonable mechanics theory, etc., and achieve the effect of saving costs and maintenance costs

Inactive Publication Date: 2012-05-23
NANTONG ZHONGRUN CONCRETE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although they consider the overall effect of the pavement structure, the mechanics theory applied is not reasonable, and some calculation parameters are inconvenient to determine, and have not been widely used.

Method used

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  • Indoor test estimation method for estimating bituminous pavement rut
  • Indoor test estimation method for estimating bituminous pavement rut
  • Indoor test estimation method for estimating bituminous pavement rut

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Embodiment: The indoor deduction method of rutting estimation of Fenguan Expressway, including the following steps:

[0031] (1) Indoor local loading test and permanent deformation law

[0032] The pavement structure surface layer of Fenguan Expressway is composed of: 4cm SMA-13 ​​(modified asphalt) + 6cm Superpave-20 (ordinary asphalt) + 8cm Superpave-25 (ordinary asphalt). In the rutting prediction of the pavement structure, all pavement structure layer materials are replaced by Superpave-20 (modified asphalt) mixture.

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PUM

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Abstract

The invention discloses an indoor test estimation method for estimating a bituminous pavement rut. In the method, an indoor test method, a numerical analysis method and weather and traffic survey data are fully utilized, four factors, namely material parameters, deformation rules of materials, temperature conditions and traffic conditions, determining a development rule of the bituminous pavementrut are organically combined, and the depth of the bituminous pavement rut is accurately estimated. By taking Fenguan Highway in Jiangsu province as an example, the specific implementation mode is illustrated. The invention expands the conventional bituminous pavement rut estimation method, can provide scientific decision for pavement management and maintenance department, and has realistic significance of reducing the pavement test cost and maintenance cost.

Description

technical field [0001] The invention belongs to the application technical field of testing and evaluating road performance of asphalt pavement, and in particular relates to a method for estimating rutting depth of asphalt pavement. Background technique [0002] Rutting is one of the main diseases of asphalt pavement. It affects the smoothness of the pavement and reduces the quality of the pavement. If the rutting accumulates too quickly, it will directly affect the service life of the pavement. In the late 1970s, the American AASHTO survey of asphalt pavement damage in various states showed that the damage of 13 of the 44 major highways investigated was caused by rutting, accounting for 29.5% of the total surveyed. In the 1980s, according to Japanese surveys, on roads with a cumulative traffic volume of more than 3 million vehicles, rut depths greater than 10mm accounted for more than 50%, and more than 80% of asphalt pavements that needed to be repaired were caused by ruts ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C23/01
Inventor 廖公云陈俊黄晓明
Owner NANTONG ZHONGRUN CONCRETE
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