Drainage asphalt mixture water permeability performance test device and test method thereof

A technology for water permeability and drainage of asphalt, used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc.

Inactive Publication Date: 2015-12-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If rainwater accumulates inside the asphalt concrete for a long time, when the asphalt concrete is under the repeated action of driving water pressure, the viscosity of the asphalt mortar will decrease, and the asphalt film will fall off, thus causing water damage to the asphalt concrete pavement
[0003] In the prior art, there is no test device and test method for evaluating the lateral water permeability of asphalt concrete, and how to test the lateral water permeability of asphalt concrete has not been well resolved.

Method used

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  • Drainage asphalt mixture water permeability performance test device and test method thereof
  • Drainage asphalt mixture water permeability performance test device and test method thereof
  • Drainage asphalt mixture water permeability performance test device and test method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a drainage asphalt mixture water permeability testing device, including a water storage tank 1, a tubular monitor 5 made of transparent material, a test mold 8 for fixing a test piece, a water volume collector 11, the water storage tank 1. The outlet pipe at the bottom is connected to the upper end of the monitor 5, and the lower end of the monitor 5 is connected to the inlet pipe at the upper end of the test mold 8 through a pipe and a connecting nut 7. The monitor 5 is transparent and can be used to observe whether there are air bubbles in the water during the test The water volume collector 11 is located directly below the outlet pipe at the lower end of the test mold 8, the first valve 6 is installed on the pipeline between the monitor 5 and the test mold 8, and the outlet pipe at the lower end of the test mold 8 A second valve 10 is installed on it.

[0029] In this embodiment, the circumferential wall of the water storage cylinder 1 is ...

Embodiment 2

[0034] A method for testing the water permeability of drainage asphalt mixture utilizing the device, comprising the following steps:

[0035] (1) Formed test piece: OGFC-13 type asphalt mixture is used, and the mineral material gradation composition designed by its mix ratio is shown in Table 1. According to the designed asphalt mixture mix ratio, the rutting test plate of the drainage asphalt mixture is formed indoors. Cut the rutting test plate into 200mm×50mm×50mm test pieces with a cutting machine, measure the size of the test piece, and calculate the cross-sectional area A of the test piece;

[0036] Table 1 Gradation composition of OGFC-13 asphalt mixture

[0037]

[0038] (2) Install the piece to be tested: seal the four side walls of the asphalt mixture test piece with epoxy resin, and the surfaces of 50mm×50mm at both ends are not closed; after the epoxy resin is cured, put the test piece into the test mold 8, and the test piece Place a 2mm-5mm thick rubber sheet ...

Embodiment 3

[0044] A method for testing the water permeability of drainage asphalt mixture utilizing the device, comprising the following steps:

[0045] (1) Formed test piece: OGFC-13 type asphalt mixture is used, and the mineral material gradation composition designed by the mix ratio is shown in Table 3. According to the designed asphalt mixture mix ratio, the rutting test plate of the drainage asphalt mixture is formed indoors. Cut the rutting test plate into 200mm×50mm×50mm test piece by cutting machine, measure the size of the test piece, and calculate the cross-sectional area A of the test piece.

[0046] Table 3 Gradation composition of OGFC-13 asphalt mixture

[0047]

[0048] (2) Install the piece to be tested: seal the four side walls of the asphalt mixture test piece with epoxy resin, and the surfaces of 50mm×50mm at both ends are not closed; after the epoxy resin is cured, put the test piece into the test mold 8, and the test piece Place a 2mm-5mm thick rubber sheet betwe...

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PUM

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Abstract

The invention relates to a drainage asphalt mixture water permeability performance test device. The drainage asphalt mixture water permeability performance test device comprises a water storage cylinder, a tubular monitor made of a transparent material, a test mold for fixing a test piece and a water amount collector, wherein a water outlet pipe at the bottom of the water storage cylinder is connected with the upper end of the monitor, the lower end of the monitor is connected with an inlet pipe at the upper end of the test mold through a pipe and a connecting nut, the water amount collector is located right below an outlet pipe at the lower end of the test mold and is used for measuring the amount of water which permeates through the test piece, a first valve is installed on a pipe between the monitor and the test mold and a second valve is installed on the outlet pipe at the lower end of the test mold. The invention further provides a drainage asphalt mixture water permeability performance test method using the device. The drainage asphalt mixture water permeability performance test device and method have the advantages that the structure is simple, the operation is convenient to perform, the water permeability performance of drainage asphalt mixture under different rainfalls can be quickly, accurately and intuitively obtained, and a theoretical basis can be provided for the optimization design of the mixing ratio of the drainage asphalt mixture.

Description

technical field [0001] The invention relates to the technical field of asphalt pavement structure and material research, in particular to a device for testing the water permeability of drainage asphalt mixture and a testing method thereof. Background technique [0002] The purpose of paving the drainage asphalt concrete pavement is that when the rainwater enters the interior of the drainage asphalt concrete pavement, the rainwater can be quickly drained through the interconnected gaps in the drainage asphalt concrete instead of staying in the asphalt concrete for a long time. If rainwater accumulates inside the asphalt concrete for a long time, when the asphalt concrete is under the repeated action of driving water pressure, the viscosity of the asphalt mortar will decrease, and the asphalt film will fall off, thus causing water damage to the asphalt concrete pavement. [0003] In the prior art, there is no testing device and testing method for evaluating the lateral water p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 黄文通王端宜
Owner SOUTH CHINA UNIV OF TECH
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