Mixing and stirring method and device in construction of SBS modified stone mastic asphalt

A technology of modified asphalt and mastic, used in roads, road repair, roads, etc., can solve problems such as reducing production efficiency, increasing construction costs, reducing the overall performance of SBS modified asphalt mastic crushed stone, etc., to achieve productivity Improve and improve the effect of measuring accuracy

Active Publication Date: 2010-04-07
CCCC SHEC DONGMENG ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the lignin fiber is added while the aggregate is added, the aggregate input time is generally 3-5 seconds, and the remaining 12-15 seconds is purely redundant time for waiting for the lignin fiber. In order to improve the quality of SBS modified asphalt mastic The overall performance of the stone will need to wait for the addition of lignin to complete, and then start spraying asphalt and wet mixing after fully stirring; generally, each plate of asphalt mastic macadam mixture waits for lignin fiber addition for 12 t

Method used

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  • Mixing and stirring method and device in construction of SBS modified stone mastic asphalt
  • Mixing and stirring method and device in construction of SBS modified stone mastic asphalt
  • Mixing and stirring method and device in construction of SBS modified stone mastic asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, in the mixing equipment, the crusher 1 and the weighing bucket 3 are connected by a conveyor belt 2, the screw conveyor 4 is connected below the weighing bucket 3, the other end of the screw conveyor is connected with the blower 6, and the rear end of the blower 6 is There is an air intake valve 5, and the front end of the blower 6 is connected to the metering storage tank 11 through the pipeline 7, and an exhaust tube is fixed above the metering storage tank 11. There is an exhaust valve 8 in the exhaust tube, and the exhaust is controlled by the exhaust valve 8. There is a cloth bag 10 between the exhaust cylinder and the metering storage cylinder 11 to prevent the lignin fiber from flying out of the exhaust cylinder during the exhaust process. The upper part of the metering storage cylinder 11 is also fixed with a blowback valve 9. It is connected with the mixing cylinder 14, and the discharge is controlled by the discharge valve 13 between the metering ...

Embodiment 2

[0018] Example 2, such as image 3 , Figure 4 As shown, by adding a lignin fiber storage cylinder on the mixing tank, the addition of lignin fiber is parallel to the coarse aggregate discharge time (3-5) seconds of the asphalt mixer (floor), and the aggregate metering, The discharge time is weighed and measured at the same time and on standby, and the above process is circulated. The time of intermittent weighing and measuring of lignin fiber is digested in dry mixing and wet mixing. The feeding time is shortened to 3 to 5 seconds through weighing and measuring. The entire mixing cycle of the material is shortened to 60 seconds, and the productivity of the asphalt mixing machine (building) is increased by 25%. At the same time, the metering accuracy is improved by overcoming the timed volumetric metering of the material (the problem of only paying attention to the feeding time regardless of the actual amount of feeding).

Embodiment 3

[0019] Embodiment 3, self-made crusher, conveyor belt conveyor, metering storage barrel, all the other are purchase items (intake valve, exhaust valve, what discharge valve purchases are French VIM, and metering bucket, screw conveyor, blower are German Benning Hoff). Redesign the control program of lignin fiber addition and weighing measurement in the mixing building, design the setting items and command items, redesign the control circuit, send out signals, respectively control the intake valve, exhaust valve, blowback valve, and discharge valve, and make full use of Weighing and metering improve production efficiency and eliminate measurement errors. The metering storage tank is 1.7 meters high and 0.8 meters in diameter; it is equipped with three material level monitoring points and a back-flushing cleaning system.

[0020] work status control table

[0021]

[0022] This mixing method adopted in the construction of SBS modified asphalt mastic macadam, it increases the...

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Abstract

The invention relates to a mixing and stirring method and a device in construction of SBS modified stone mastic asphalt (SMA), enhancing the measuring accuracy. The invention is characterized in that a crusher 1 performs primary crushing on cellulose fiber, the cellulose fiber processed by the primary crushing is conveyed to a batchmeter 3 via a conveying belt 2 connected to the crusher 1, and accurate measurement is carried out by a self decrement scale of the batchmeter 3; the cellulose fiber processed by the secondary crushing and accurate measuring is conveyed to an air blower 6, an air inlet valve 5 and an air outlet valve 8 are opened, a blowback valve 9 and a discharge valve 13 are closed, the air blower 6 is started to blow the cellulose fiber into a measurement storing barrel 11 via a channel 7, after all the measured cellulose fiber is blown into the measurement storing barrel, the air outlet valve is closed, the air inlet valve, the discharge valve and the blowback valve are opened, all the cellulose fiber is sent into an agitating tank to be dryly agitated with the aggregate of coarse aggregate and fine aggregate, and finally mineral powder and asphalt are added to perform wet agitating to produce qualified SMA concrete.

Description

technical field [0001] The invention relates to a mixing method and equipment in highway construction, and is particularly suitable for the mixing method and equipment in SBS modified asphalt mastic macadam construction. Background technique [0002] At present, batch-type asphalt mixture mixers (floors) are used for the mixing of SBS modified asphalt mastic macadam pavement mixtures. At present, the most advanced German Benninghof 5000 asphalt mixture mixers are used. (Building) as the representative of the asphalt mixer, the feeding order of mixing asphalt mastic macadam is: [0003] [0004] The lignin fiber generally adopts time relay timing volume metering, air pressure feeding method or equal packaging one-time adding continuous feeding control, that is, when the coarse and fine aggregates are put in, start timing metering or weigh the set weight of equal packaging The lignin fiber is unpacked and sent to the mixing tank continuously by air. Although the amount of...

Claims

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Application Information

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IPC IPC(8): E01C19/10
Inventor 陈萍贾利民高丛侯永川张龙健赵勇高飞
Owner CCCC SHEC DONGMENG ENG CO LTD
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