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Intermittent production graduation real-time monitoring system and method of hot-mix asphalt mixture

An asphalt mixture, real-time monitoring technology, applied in signal transmission system, comprehensive factory control, comprehensive factory control, etc., can solve the problem of unstable road surface quality, inability to ensure that the mixture gradation is always under control, and poor monitoring of the mixing process and other issues to achieve the effect of reducing the probability of early damage, good economic and social benefits, and reduced maintenance costs

Inactive Publication Date: 2013-12-04
CCCC TUNNEL ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing asphalt mixture quality monitoring methods focus on the control of cold silo gradation, but the quality of asphalt mixture products is not only related to the aggregate ratio delivered by cold silo, but also related to the aggregate ratio of hot silo after secondary screening. The process of entering the mixing plant after material metering is closely related, so such a control method cannot ensure that the gradation of the produced mixture is always under control
Poor monitoring of the mixing process will lead to the application of asphalt mixture that does not meet the design requirements on the road surface, resulting in unstable pavement quality

Method used

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  • Intermittent production graduation real-time monitoring system and method of hot-mix asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An example of an intermittent hot-mix asphalt mixture production gradation real-time monitoring system, see figure 1 The system includes a weight sensor 3 arranged in a batching scale 2 under a plurality of hot silos 1 of the mixing station, and the signal of the weight sensor is connected to an industrial control machine 4, wherein the hot silos are also provided The temperature sensor 5, the temperature sensor signal is connected to the industrial control machine, a computer 6 with a data acquisition and analysis system is connected to the industrial control machine, and the computer is connected to a master control room server 7 through the network 10 through a GPRS data link. The material in the batching scale falls onto the conveyor belt 11, and the conveyor belt sends the material to the mixer 12 for mixing.

[0032] The weight sensor signal and the temperature sensor signal can be connected to the industrial control machine through a laid cable respectively; however,...

Embodiment 2

[0034] An embodiment of a method for real-time monitoring of batch-type hot-mix asphalt mixture production gradation is based on the monitoring method of the batch-type hot-mix bituminous mixture production gradation real-time monitoring system described in Example 1. The method includes:

[0035] a. Formulate the gradation control range of the hot mix asphalt material for construction: determine the standard mix ratio for construction from three stages: target mix design, production mix design, and production mix verification. Different hot mix asphalt silos are used in different silos Vibrating screens with different sieve holes are set below the sieve, and the material quality control range of each bin in the production gradation is determined by the permissible fluctuation range of the quality of the material passed through each sieve;

[0036] b. Display the quality control range of each warehouse material in the form of a graphic monitoring interface, the graphic is a curve gr...

Embodiment

[0046] Example: A certain project is the lower layer of an expressway asphalt pavement, the mixture type is AC-20, and the layer thickness is 7 cm. During the mixing process of the mixture, the construction unit uses the method provided by the present invention as a guide to realize the real-time monitoring of the production gradation of the hot-mix asphalt mixture, which is specifically carried out in the following steps:

[0047] (1) Design of hot-mix asphalt mixture: adopts a three-stage design of target mix ratio, production mix ratio, and production mix ratio verification. After passing the verification, the standard mix ratio for construction and the allowable fluctuation range of the materials through each sieve are finally determined. Figure 4 .

[0048] (2) Through an industrial computer connected to the computer in the control room of the mixing plant, intercept the real-time production data on the computer in the control room of the mixing station, such as: number of tr...

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Abstract

The invention discloses an intermittent production graduation real-time monitoring system and method of a hot-mix asphalt mixture. Real-time detection is carried out on mix proportion of the asphalt mixture and the amount of asphalt on a construction site through a designed data collecting module and a designed data transmitting module. On the basis of real-time detection data, the mix proportion of the asphalt mixture and the amount of the asphalt can be monitored in real time on a mixing site through a designed data processing module and a designed warning system. The method effectively solves the problem of difference between an intermittent mixture production mix proportion and a target mix proportion, makes up for detects of a proportion ratio monitoring technique of an existing cold material bin and achieves real-time monitoring of production graduation in a hot material bin of the hot-mix asphalt mixture.

Description

Technical field [0001] The invention relates to the field of monitoring the production quality of hot-mix asphalt mixtures, in particular to an intermittent hot-mix asphalt mixture production gradation real-time monitoring system and method. Background technique [0002] The quality of asphalt mixture is mainly affected by aggregate characteristics and production process control. During the construction process, due to the influence of the working conditions of the mixing station's transportation, drying, metering, mixing and control systems, the gradation of the hot-mix asphalt mixture is more likely to fluctuate, or even seriously deviate from the target gradation. Make the road performance of asphalt mixture seriously deviate from the various road indexes designed and verified by the laboratory. The variability of the gradation of the hot-mix asphalt mixture will result in a substantial decrease in the quality of the asphalt pavement and serious early damage to the pavement. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418G08C17/02
CPCY02P90/02
Inventor 郝培文刘兴国刘红瑛黄玉江王春许爱政马红梅王建军
Owner CCCC TUNNEL ENG
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