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Test device for scour resistance of base course

A technology for testing equipment and pavement base, which can be applied in the direction of removing certain components, such as weighing, etc., can solve the problems of complex equipment, difficult to popularize and use, etc., and achieve the effects of simple installation, simple and clear design ideas, and convenient maintenance.

Inactive Publication Date: 2010-08-04
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its equipment is complicated, and it is not easy to promote and use it in actual engineering.

Method used

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  • Test device for scour resistance of base course
  • Test device for scour resistance of base course
  • Test device for scour resistance of base course

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The invention mainly includes a hydraulic pressure component, a test component and a support component.

[0018] see figure 1 , The anti-scouring test instrument has a water pressure machine 2 to provide the dynamic water pressure required for the test. Water enters the water pressure machine 2 from the water inlet pipe 1, and after obtaining the pressure required for the test, it flows into the test part from the water outlet pipe 3 to perform the scouring test. The nozzle 4 is located on the top plate 9, and the instrument has two nozzles, from which a water column with a certain pressure is sprayed to hit the test piece placed on the rotating support 5. The motor 7 and the transmission shaft 6 drive the rotating support 5 to rotate at a certain speed, thereby driving the test piece on it to rotate, so that the top surface of the test piece is completely washed by the water column, so as to ensure the accuracy and validity of the data. After the test piece is washed ...

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PUM

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Abstract

The invention discloses a test device for scour resistance of a base course, which comprises a bracket. A chassis is arranged at the bottom of the bracket; a rotary support and a water baffle are arranged on the chassis; the water baffle is arranged on the chassis and sleeved outside the rotary support and a test piece for blocking the splash during test; a motor is arranged under the chassis and a transmission shaft passes through the chassis to be connected with the rotary support and the motor; and a spray nozzle is arranged on the top of the bracket. The test device for the scour resistance of the base course tests the scour resistance of different types of base courses; the scour resistance of different types of base course mixtures is analyzed and compared; and a reliable test basis is provided.

Description

technical field [0001] The invention relates to the field of testing the anti-scouring performance of road engineering pavement bases. In particular, it relates to proposing a testing device for anti-scouring performance of a semi-rigid base. Background technique [0002] Water damage to pavement is a difficult problem that has not been solved so far, especially the damage to semi-rigid base pavement is quite common. There are many reasons for water damage. One very important reason is that the road surface water enters the interface between the surface layer and the semi-rigid base layer from the pores, joints, and cracks. When trucks are running at high speeds), considerable hydrodynamic pressure and suction force will be generated. After a certain number of instantaneous and repeated actions of these two forces, the surface layer will be separated from the base layer, which will lead to stress on the pavement structure. The condition deteriorates, which in turn damages ...

Claims

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Application Information

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IPC IPC(8): G01N5/04
Inventor 陈拴发郑木莲王博
Owner CHANGAN UNIV
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