Asphalt distribution precision and uniformity testing method

A test method and uniformity technology, applied in the field of asphalt spreading accuracy and uniformity test, can solve the problems of unsystematic involvement, lack of data statistics, etc., and achieve convenient operation, accurate technical guidance, and strong engineering practice significance Effect

Inactive Publication Date: 2016-06-29
HOHAI UNIV
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Problems solved by technology

[0003] At present, there are not many studies on the accuracy and uniformity of asphalt spreading at home and abroad, and the focus of the research is on the factors that affect the accuracy of asphalt spreading. However, there is no systematic study on how to measure the accuracy and uniformity of asphalt spreading. arrive
At the same time, the current method of evaluating the accuracy and uniformity of asphalt spreading on the construction site is mainly determined by observing the construction site situation on the surface, and there is a lack of reliable data statistics

Method used

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  • Asphalt distribution precision and uniformity testing method
  • Asphalt distribution precision and uniformity testing method
  • Asphalt distribution precision and uniformity testing method

Examples

Experimental program
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Embodiment 1

[0024] The asphalt distribution vehicle used in this example is a continuous asphalt distribution vehicle, so it is only necessary to prepare a group of 10 pallets for testing, and the mass of each pallet is recorded as m 1 -m 10 , whose shape is a square with a side length of 0.2m and an area of ​​0.04m 2 , followed by numbering 1-10.

[0025] Place the pallets horizontally and evenly on the same straight line on the road surface; each group of pallets is divided into three parts: left, middle and right, the distance between the middle and left and right parts is 50cm, and the distance between each inner pallet is 10cm; the quality of each group of asphalt-spreading pallets is denoted as m' 1 -m' 10 .

[0026] According to the mass of the pallet before and after sprinkling asphalt, the amount of asphalt sprayed per unit area of ​​a single pallet is calculated by formula (1):

[0027] S i =(m' i -m i ) / 0.04(1)

[0028] The calculation results are shown in the table be...

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Abstract

The invention provides an asphalt distribution precision and uniformity testing method. A tray is obtained, the mass m of the tray is weighed, and the area of the tray is measured; the tray is placed on a road surface where asphalt is not distributed, and the mass m' of the tray is weighed after asphalt distribution; then the asphalt distribution amount S of the tray in unit area is calculated according to the mass of the tray before asphalt is distributed and the mass of the tray after the asphalt is distributed; finally, according to the unit area asphalt distribution amount S0 meeting the standard requirement, the range ratio and errors of the unit area asphalt distribution amount of the tray are calculated, and asphalt distribution precision and uniformity are evaluated. The testing method can quantitatively test asphalt distribution precision and uniformity, the principle is simple, operation is convenient, more scientific and more accurate technical guidance can be provided for site construction, and the method has great engineering practice significance.

Description

technical field [0001] The invention belongs to the technical field of road engineering, in particular to a method for testing the accuracy and uniformity of asphalt spreading. Background technique [0002] In the construction process of modern asphalt pavement, the requirements for construction quality are getting higher and higher, and the sealing layer of asphalt pavement is an important part of pavement construction, which is mainly realized by spreading emulsified asphalt on the road surface. The amount and uniformity directly affect the performance of the pavement, too much will be uneconomical, and too little will reduce the performance of the pavement. Therefore, it is of great significance to test the accuracy and uniformity of asphalt spreading for on-site construction. [0003] At present, there are not many studies on the accuracy and uniformity of asphalt spreading at home and abroad, and the focus of the research is on the factors that affect the accuracy of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/00
CPCG01N5/00
Inventor 于新梁星敏尹龙董夫强王天宇徐波
Owner HOHAI UNIV
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