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Asphalt warm mixing agent

A technology of warm mix agent and asphalt, which is applied in the field of asphalt warm mix agent, can solve the problems of reducing the high temperature viscosity of asphalt, the influence of asphalt low temperature viscosity without paying attention, and the scarcity of warm mix agent, so as to achieve the improvement of low temperature viscosity, great application value, Effect of lowering viscosity at high temperature

Pending Publication Date: 2021-12-21
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the foreign warm mix agent Sasobit is widely used in the market. This product has defects such as high price and poor low temperature performance.
In order to realize the localization of warm mix agents and meet the needs of green, environmental protection and energy-saving development of road construction, there have been many domestic research reports on warm mix agents in recent years, for example, literature [Fan Qunbao, Xie Dong, Jiao Liya. 29] studied the cooling effect of LF-2 warm mix agent; literature [Jia Xiaopeng, Chen Qiao, Zhang Yanjun. Road Engineering, 2020, 11:58-60.] studied the effect of RH warm mix agent on the performance of different types of asphalt; literature [ Jia Hezhu. Shandong Communications Technology, 2020, 6: 15-17.] studied the influence of surfactant-based warm mix agents on asphalt properties. These studies basically focused on reducing the high-temperature viscosity of asphalt, but did not give a focus on
The ideal warm mix agent should not only reduce the high-temperature viscosity of asphalt, but also increase the low-temperature viscosity of asphalt, but such a warm mix agent is very scarce

Method used

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  • Asphalt warm mixing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Weigh 20.0g of base asphalt in a 100ml small beaker, heat it in an oven at 100°C, add 0.80g of stearamide after the base asphalt is melted, stir with a stainless steel stirring rod for about 6 minutes, stearamide is completely dissolved, and then Pour the asphalt mixture into the preheated Brookfield viscosity measurement mold, and then measure the viscosity of the asphalt mixture at 60-165°C with a Brookfield rotational viscometer according to the method specified in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011). Viscosity, experimental data are listed in the summary table.

Embodiment 2

[0013] Weigh 20.0g of base asphalt in a 100ml small beaker, heat it in an oven at 100°C, add 1.00g of stearamide after the base asphalt is melted, stir with a stainless steel stirring rod for about 6 minutes, stearamide is completely dissolved, and then Pour the asphalt mixture into the preheated Brookfield viscosity measurement mold, and then measure the viscosity of the asphalt mixture at 60-165°C with a Brookfield rotational viscometer according to the method specified in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011). Viscosity, experimental data are listed in the summary table.

Embodiment 3

[0015] Weigh 20.0g of base asphalt in a 100ml small beaker, heat it in an oven at 100°C, add 0.80g of stearamide and 0.08g of stearic acid after the base asphalt is melted, and stir it with a stainless steel stirring rod for about 6 minutes. The amide and stearic acid are completely dissolved, and then the asphalt mixture is poured into the preheated Brookfield viscosity measurement mold, and then the Brookfield rotational viscosity is measured according to the method specified in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011). Measure the viscosity of the asphalt mixture at 60-165°C with the meter, and the experimental data are listed in the summary table.

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Abstract

The invention relates to an asphalt warm mixing agent which is characterized by comprising stearamide and stearic acid. The asphalt warm mixing agent can effectively reduce the viscosity of asphalt at high temperature and improve the viscosity of asphalt at low temperature, and has important application value.

Description

technical field [0001] The invention relates to the technical field of road asphalt materials, in particular to an asphalt warm mix agent. Background technique [0002] In recent years, my country's expressways have developed rapidly, and asphalt pavement has become the preferred pavement material for expressways due to its good driving comfort and excellent performance. Hot-mix asphalt mixture technology is generally used in the construction of asphalt pavement. The construction temperature of this technology is relatively high (generally heating temperature is 160-180 ℃), which not only consumes a lot of energy, but also produces a lot of smoke and irritating asphalt at high temperature. odor, seriously pollute the environment, and endanger the health of construction workers. With the strengthening of people's awareness of environmental protection, scientists have proposed warm-mix asphalt mixture technology, that is, adding a class of substances in the heating and mixing...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K5/20C08K5/09
CPCC08K5/20C08K5/09C08L95/00
Inventor 袁福根白雪鹏沈菊男石鹏程朱雪华胡正新贾真朱超李爽
Owner SUZHOU UNIV OF SCI & TECH
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