Bituminous mixture permeability testing device and method

A technology of asphalt mixture and testing device, which is applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve the problems of inability to simulate precipitation intensity and road cross slope, and inability to measure the water volume of asphalt mixture, There are problems such as errors in the measurement results of pavement permeability

Inactive Publication Date: 2015-12-09
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods can only measure the permeability coefficient, but cannot measure the amount of water remaining inside the asphalt mixture, and the permeability measuring instrument in the laboratory cannot simulate the precipitation intensity and the cross slope of the road surface, so that there are errors in the measurement results of the pavement permeability

Method used

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  • Bituminous mixture permeability testing device and method
  • Bituminous mixture permeability testing device and method
  • Bituminous mixture permeability testing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Embodiment: the evaluation method of OGFC-13 mixture permeability, comprises the steps:

[0034] Select aggregates and SBS asphalt whose gradation is shown in Table 1. It is preliminarily determined that the oil-stone ratio is 4.9%, and the porosity is 18.2%. A rutting plate with a size of 300mm×300mm×50mm is worked out.

[0035] Table 1 OGFC-13 gradation

[0036] Sieve hole(mm)

13.2

9.5

4.75

2.36

1.18

0.6

0.3

0.15

0.075

Passing rate(%)

98.01

72.94

24.38

16.94

13.35

10.71

8.27

6.82

5.02

[0037] The formula of rainstorm intensity in Nanjing is:

[0038] q = 10716.7 ( 1 + 0.837 lg P ) ( t + 32.90...

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Abstract

The invention discloses a bituminous mixture permeability testing device. The testing device is characterized by comprising a water storage tank and a base, wherein multiple through holes are formed in a bottom plate of the water storage tank, and drain holes are formed in the side face of the water storage tank; the base is provided with an upper bottom plate and a lower bottom plate, one end of the upper bottom plate and one end of the lower bottom plate are connected through a hinge, a height adjusting device is arranged at the other ends and used for changing the slope of the upper bottom plate, an enclosure is arranged on the periphery of the upper bottom plate, the upper bottom plate is provided with clamping grooves and a partition plate, the water storage tank can be inserted into the clamping grooves to be fixed, and the partition plate is connected with the enclosure. The invention relates to a bituminous mixture permeability testing method. A road surface cross slope is simulated through the slope of the upper bottom plate, rainfall intensity is simulated by adjusting heights of the drain holes, surface drained water, transverse permeating water and internal residual water of a test piece are collected separately, and the permeability and water-retaining property of the bituminous mixture test piece are revealed more vividly and visually.

Description

technical field [0001] The invention belongs to the field of detection and evaluation of service performance of asphalt mixture, and in particular relates to a testing device and method for the permeability of asphalt mixture. Background technique [0002] With the continuous progress of the transportation industry, China's highway construction has made great progress. By the end of 2014, the total mileage of national highways reached 4.4639 million kilometers. Asphalt concrete pavements account for the vast majority of roads that have been opened to traffic. When the traffic network basically meets the needs, attention should be paid to the performance of the road. There are many problems in the traditional densely graded road surface, such as: with the economic development, the number of vehicles on the road increases, resulting in noise pollution. According to relevant data, 33.9 million people in my country are disturbed by road noise, and severe traffic noise will cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 陈俊张倩倩徐艳陶莎
Owner HOHAI UNIV
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