Method for measuring flushing performance of base layer by lateral distribution rutmeter

A technology of lateral distribution and rutting, which is applied in the direction of removing certain component weighing, measuring devices, testing wear resistance, etc., can solve problems such as erosion damage, and achieve a simple, easy-to-operate method, obvious economic and social benefit effect

Inactive Publication Date: 2018-10-12
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Problems solved by technology

[0006] Aiming at the problem that the cement-stabilized macadam base is prone to scour damage during use, An Chunying proposed a scour test method

Method used

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  • Method for measuring flushing performance of base layer by lateral distribution rutmeter
  • Method for measuring flushing performance of base layer by lateral distribution rutmeter
  • Method for measuring flushing performance of base layer by lateral distribution rutmeter

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Embodiment 1

[0065] In order to verify the method, the experimental group used multiple comparison test groups of different graded mixtures for experimental verification. According to the cement-stabilized gravel gradation recommended in the "Technical Rules for Road Pavement Base Construction" JTG F20-2015, C-C- 1. C-C-2, C-C-3 three water-stabilized crushed stone base gradations are used as test groups 1-3, and then verified according to the above steps. The test results are shown in Table 1.

[0066] Table 1 Scouring wear test results

[0067]

[0068] As a control group, the test method of T 0860-2009 anti-erosion test method of inorganic binder stabilized materials in the JTG E51-2009 specification of "Test Regulations for Inorganic Binder Stable Materials in Highway Engineering" was used to carry out the control group test, and then verified according to the above steps. The test results As in Table 2. The control group uses the same graded mixture control group 1-3 as the test g...

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Abstract

The invention relates to a method for measuring the flushing performance of a base layer by a lateral distribution rutmeter. The method comprises the following steps: 1, mixing cement stabilized broken stones; 2, molding a double-layer rut plate: calculating the filling amount according to the volume of a rut plate test mold and the maximum dry density of the cement stabilized broken stones, and molding the double-layer rut plate; 3, curing the produced double-layer rut plate test piece under standard conditions for 28 days; 4, drying the cured test piece until the weight is constant, and weighing the test piece to obtain mass m1; 5, turning on the lateral distribution rutmeter for 60 min; 6, taking out the tested double-layer rut plate, drying the tested double-layer rut plate until the weight is constant, weighing the dried double-layer rut plate to obtain mass m2, carrying out demolding, and weighing the test mold to obtain a weight m3; and 7, obtaining the flushing rate according to the following formulas: the flushing quantity = m1 - m2, and the flushing rate = (m1 - m2) / (m1 - m3). The lateral distribution rutmeter in the method is obtained through improving a common rutmeter,and the method is simple and is easy to operate. The method has significant social and economic benefits.

Description

technical field [0001] The invention belongs to the field of construction and relates to a method for measuring the scouring performance of a base layer through a laterally distributed rutting instrument. Background technique [0002] During the use of the road, water will penetrate into the pavement structure layer through the cracks in the pavement surface layer, and the water entering the pavement structure layer is usually difficult to evaporate. In the rainy season, continuous rainfall for several days may make the base under the pavement cracks in a saturated state. The function makes these flowing water generate strong hydrodynamic pressure to scour the grassroots. When the anti-scouring ability of the semi-rigid base material is insufficient, the void between the surface layer and the base layer caused by erosion will cause damage to the pavement structure. [0003] For the anti-scouring performance of base materials, the foreign test methods mainly include the rot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01N5/04
CPCG01N3/567G01N5/04G01N2203/0676
Inventor 徐世法李铁成胡超峰刘琳贾海洋刘然索智杨东丽祝闯石家磊胡伦福刘晨旭李崔义刘钰斌郭金阳邓振波姜治伟
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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