A method and application of determining the suitability of asphalt mixture for open traffic

An asphalt mixture, open traffic technology, applied in the direction of material inspection products, etc., can solve the problems of large error, low correlation between temperature and dynamic stability, and low accuracy

Active Publication Date: 2020-10-27
厦门华特公路沥青技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above measurement method can determine the open traffic conditions of asphalt mixture, but its accuracy is low, because the correlation between temperature and dynamic stability is low, and the rutting test is performed indoors, while the asphalt mixture on the construction site is Outdoors, if the rutting test is used to directly determine, there will be a large error, and it usually cannot accurately determine the appropriate open traffic conditions

Method used

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  • A method and application of determining the suitability of asphalt mixture for open traffic
  • A method and application of determining the suitability of asphalt mixture for open traffic
  • A method and application of determining the suitability of asphalt mixture for open traffic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. The rutting test specimen was prepared by using the rutting wheel milling machine. The asphalt mixture of the rutting specimen was modified asphalt I-D for SMA-13 ​​mixture overlay.

[0036] 1.1 According to figure 1 The schematic diagram of the double-layer rutting plate shown is used to make a trial mold. The double-layer rutting plate is composed of a bottom plate 1, a side plate 2, a lower end plate 3 and an upper end plate 4. Bottom plate 1 peripheral edge, side plate 2 lower end long sides and two short sides, lower end board 3 outer side two ends edges and lower end long side, upper strata end board 4 outer side two ends edges, all have screw holes. A movable handle 5 is welded to the geometric center of the outer surface of the side plate 2, and the movable handle 5 is used for the operator to move the assembled double-layer rutting plate. Then, the side plate 2 is connected to both sides of the bottom plate 1 by screws, and the lower end plate 3 is connecte...

Embodiment 2

[0061] The principles and steps of this embodiment are the same as those of Embodiment 1, and the same parts will not be described in detail, and only the differences will be described. The difference is that this example measures the suitable opening conditions for quick-opening modified asphalt for SMA-13 ​​mixture overlaying. The asphalt mixture used in the rutting specimen is the SMA-13 ​​mixture overlay with quick-opening modified asphalt.

[0062] It obtains the rutting dynamic stability data table shown in Table 3

[0063] Table 3 Indoor rutting test dynamic stability data table

[0064]

[0065] It obtains the stiffness data table shown in Table 4

[0066] Table 4 The stiffness data table of the SMA-13 ​​mixture overlay construction site using quick-opening modified asphalt

[0067]

[0068] Based on the data in Table 3 and Table 4 above, the dynamic stability data and overlay stiffness fitting equation of using quick-opening modified asphalt for SMA-13 ​​mixt...

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Abstract

The invention discloses a method for determining the suitability of an asphalt mixture for open traffic and the application thereof. The method comprises the following steps: S1, preparing a rutting test piece; S2, doing indoor rutting test to obtain the dynamic stability of the rutting test piece under a number of temperature nodes; S3, testing the stiffness of the asphalt mixture corresponding to the rutting test piece under a number of temperature nodes after spreading and compaction by rolling are completed on a construction site by adopting a stiffness measuring instrument; S4, analyzinga linear relation between the dynamic stability and the stiffness to obtain a fitting formula; S5, measuring the stiffness of the asphalt mixture on the construction site, calculating the dynamic stability through the fitting formula and determining whether traffic is open or not. The method disclosed by the invention has the benefits that the open traffic conditions can be quickly and accuratelyjudged on site, the traffic congestion time is further reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the field of road maintenance, in particular to a method and application for determining that asphalt mixture is suitable for open traffic. Background technique [0002] Asphalt concrete pavement often suffers early damage due to design, construction, maintenance and other reasons, and needs to be repaired and reconstructed. However, these easily damaged road sections are generally busy road sections, so economic losses caused by overhaul construction must be overcome during the maintenance process To ensure people's travel convenience and driving and construction safety, the most important thing is to open the traffic as soon as possible after the renovation. [0003] In order to ensure that the asphalt mixture paving layer will not cause pavement shear damage due to early opening of traffic, all countries have made corresponding regulations. my country's standard "Technical Specifications for Highway Asphalt Pavement Constru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/42
CPCG01N33/42
Inventor 马云容许春生蔡智慧胥亮朱明
Owner 厦门华特公路沥青技术有限公司
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