Foaming asphalt system, and preparation device, preparation and usage methods of foaming asphalt

A technology of foamed asphalt and preparation equipment, which is applied in the direction of climate change adaptation, roads, road repairs, etc. It can solve problems such as inconvenient use, increase the workload of mixing plants, and limit the application range of foamed asphalt, so as to ensure stability, The effect of reducing investment

Inactive Publication Date: 2017-06-09
JIANGSU TIANNUO ROAD MATERIAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The on-site preparation of foamed asphalt in the mixing plant on the pavement construction site not only increases the workload of the mixing plant, but also cannot guarantee the quality of the asphalt; it also limits the application range of foamed asphalt, for some small micro-maintenance operations and other small usage Engineering is extremely inconvenient

Method used

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  • Foaming asphalt system, and preparation device, preparation and usage methods of foaming asphalt
  • Foaming asphalt system, and preparation device, preparation and usage methods of foaming asphalt
  • Foaming asphalt system, and preparation device, preparation and usage methods of foaming asphalt

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The foamed asphalt preparation device of this embodiment comprises the asphalt pump 1 and foaming agent pump 2 that are respectively connected to the asphalt feeding system and foaming agent feeding system, and the discharge pipelines of the asphalt pump and foaming agent pump are all connected to Mixer 3, the outlet of said mixer is connected to the inlet and outlet pipeline 14 of a pressure tank 6 through pressurization equipment 4 (air ejector) and pressure tank feed valve 5; The inlet and outlet pipeline of pressure tank 6 is also passed pressure The tank discharge valve 7 is connected to the discharge pipe; the device also includes a pressure tank heating system capable of heating the material in the pressure tank, and a pressure tank pressure stabilization system capable of maintaining a certain pressure higher than normal pressure in the pressure tank, and A stirring system capable of stirring the materials in the pressure tank. An asphalt heating device 8 and a ...

Embodiment 2

[0035] Utilize the device and method of the present invention to produce 20 tons of foamed asphalt, store for 1 hour, 5 hours, 15 hours, 48 ​​hours, 72 hours, 240 hours, and test indicators after 360 hours.

[0036] Process conditions:

[0037] Raw asphalt: AH-70# asphalt; temperature 120°C

[0038] Foaming agent is normal temperature water.

[0039] The ratio of raw material asphalt and water is 98%: 2% by mass ratio;

[0040] Production capacity: 10 tons / hour

[0041] The method for implementing this embodiment includes the following steps:

[0042] Step 1: Preheat the system, start the asphalt pump, and circulate the raw asphalt through the heat exchanger and flow meter to preheat the temperature to 130±0.5°C. The ratio of raw asphalt to foaming agent (water) is 98%:2%. It is 9.8 tons / hour to set and adjust the bitumen flow rate; Start the blowing agent pump, be 98%: 2% according to the ratio of raw material bitumen and blowing agent (water), set the flow rate of blowin...

Embodiment 3

[0053] Utilize the device and method of the present invention to produce 60 tons of foamed asphalt, store for 1 hour, 5 hours, 15 hours, 48 ​​hours, 72 hours, 240 hours, and test indicators after 360 hours.

[0054] Process conditions:

[0055] Raw asphalt: SBS modified asphalt I-C; temperature 140°C

[0056] Foaming agent is normal temperature water.

[0057] The ratio of raw material pitch to water is 97.5% by mass: 2.5%;

[0058] Production capacity: 20 tons / hour

[0059] The method for implementing this embodiment includes the following steps:

[0060] Step 1: Preheat the system, start the asphalt pump, and circulate the raw asphalt through a heat exchanger and a flow meter to preheat the temperature to 140±0.5°C. The ratio of raw asphalt to foaming agent (water) is 97.5%:2.5%. It is 19.5 tons / hour to set and adjust the bitumen flow rate; Start the blowing agent pump, be 97.5%: 2.5% according to the ratio of raw material bitumen and blowing agent (water), set the flow ...

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Abstract

The invention relates to a foaming asphalt system, and a preparation device, preparation and usage methods of foaming asphalt. The foaming asphalt system comprises an asphalt and foaming agent mixture sealed in a pressure container, as well as a heating system capable of maintaining the asphalt and foaming agent mixture in the pressure container above the atmospheric boiling point, and a pressure system capable of leading the pressure in the pressure container to be higher than the saturated steam pressure. According to the foaming asphalt system, the foaming asphalt can be stably stored and transported, and a foaming asphalt material can be conveniently generated on construction site.

Description

technical field [0001] The invention relates to the preparation technology of asphalt material for pavement engineering, in particular to a foamed asphalt system, a foamed asphalt preparation device, and a preparation and use method. Background technique [0002] The study found that during the production of asphalt mixture used for asphalt pavement, every 10°C decrease in temperature will reduce 0.9kg of CO2 emissions per ton of asphalt mixture. If the mixing temperature of asphalt mixture can be lowered by 30°C than the conventional temperature, the CO2 emission of ordinary asphalt mixture will be reduced by 14%, and the CO2 emission of modified asphalt mixture will be reduced by 13%. In addition, the use of warm mix asphalt will save fuel consumption by 30%-35% compared to hot mix asphalt. In this context, foamed asphalt warm mixing technology came into being. [0003] At present, the production of foamed asphalt is to use the asphalt storage tank and heating facilities...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C19/10
CPCE01C19/1009E01C19/1068Y02A30/30
Inventor 郭兆民柳卫军张玉贞李秋飞肖护兵
Owner JIANGSU TIANNUO ROAD MATERIAL TECH
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