Hot mix asphalt pavement smoke suppressant and preparation method of smoke-suppressing asphalt

A technology of asphalt pavement and smoke suppressant, which is applied in the direction of building components, fibrous fillers, building insulation materials, etc., can solve the problems of complex preparation process, high cost, and different use effects, and achieve obvious technical and economic benefits and low cost Low, the effect of reducing the release of asphalt fume

Active Publication Date: 2014-12-10
重庆建工建筑产业技术研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many brands of warm mix agents on the market, but the effects of use are different.
[0003]A paper published by Niu Ling (No. Issue), disclosed that the mixed use of warm mix agent and flame retardant on the highway pavement effectively solved the environmental protection problem in the construction process, and the smoke suppression effect is also good. However, the flame retardant in this paper is APFR silicon aluminum series Flame retardant is a mixed flame retardant compounded by using phosphorus, nitrogen, magnesium, aluminum and other multi-component compounds at the same time. The preparation process is complicated and the cost is high

Method used

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  • Hot mix asphalt pavement smoke suppressant and preparation method of smoke-suppressing asphalt
  • Hot mix asphalt pavement smoke suppressant and preparation method of smoke-suppressing asphalt
  • Hot mix asphalt pavement smoke suppressant and preparation method of smoke-suppressing asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 97kg of SBS modified asphalt and 3kg of smoke suppressant.

[0027] The smoke suppressant includes 0.21kg of warm mixing agent KZW-50 (produced by Tianjin Kangzewei Technology Co., Ltd.) and 2.79kg of surface-modified aluminum hydroxide.

[0028] The process of aluminum hydroxide surface modification treatment is as follows: dry aluminum hydroxide at 100-130°C for 3 hours, then evenly spray silane ethanol aqueous solution on the surface of aluminum hydroxide, mix evenly, and obtain aluminum hydroxide after surface modification treatment; The volume ratio of silane, ethanol and water in the silane ethanol aqueous solution is 20:72:8.

[0029] Heat the asphalt to 100-130°C, then add warm mix agent, and stir for a certain time until uniform;

[0030] Then add aluminum hydroxide and stir for a certain period of time until the smoke-suppressing pitch is obtained uniformly.

[0031] Tests have shown that the performance of the obtained smoke-suppressing asphalt is show...

Embodiment 2

[0035] Take 95kg of SBS modified asphalt and 5kg of smoke suppressant.

[0036] Among them, the smoke suppressant includes 0.45kg of warm mixing agent Evotherm TM 3G (produced by MeadWestvaco, USA) and 4.55kg of surface-modified aluminum hydroxide.

[0037] The process of aluminum hydroxide surface modification treatment is as follows: dry aluminum hydroxide at 100-130°C for 2 hours, then evenly spray silane ethanol aqueous solution on the surface of aluminum hydroxide, mix evenly, and obtain aluminum hydroxide after surface modification treatment; The volume ratio of silane, ethanol and water in the silane ethanol aqueous solution is: 20:72:8.

[0038]Heat the asphalt to 100-130°C, then add warm mix agent, and stir for a certain time until uniform;

[0039] Then add aluminum hydroxide and stir for a certain period of time until the smoke-suppressing pitch is obtained uniformly.

[0040] Tests have shown that the performance of the obtained smoke-suppressing asphalt is sho...

Embodiment 3

[0044] Take 96kg of SBS modified asphalt and 4kg of smoke suppressant.

[0045] The smoke suppressant includes 0.32kg of warm mixing agent LBW-1 (produced by Shijiazhuang Lubang Technology Co., Ltd.) and 3.68kg of surface-modified aluminum hydroxide.

[0046] The process of surface modification treatment of aluminum hydroxide is as follows: dry aluminum hydroxide at 100-130°C for 1 hour, then evenly spray silane ethanol aqueous solution on the surface of aluminum hydroxide, mix well, and obtain aluminum hydroxide after surface modification treatment; The volume ratio of silane, ethanol and water in the silane ethanol aqueous solution is: 20:72:8.

[0047] Heat the asphalt to 100-130°C, then add warm mix agent, and stir for a certain time until uniform;

[0048] Then add aluminum hydroxide and stir for a certain period of time until the smoke-suppressing pitch is obtained uniformly.

[0049] The test shows that the properties of the obtained smoke-suppressing asphalt are show...

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Abstract

The invention discloses a hot mix asphalt pavement smoke suppressant, comprising the following components in percentage by weight: 7%-9% of a warm mixing agent and 91%-93% of aluminium hydroxide subjected to surface modification treatment. The invention also discloses a preparation method of smoke-suppressing asphalt. The method comprises the following steps: a) heating asphalt to 100-130 DEG C, and then adding the warm mixing agent in the smoke suppressant according to the ratio in claim 1, and stirring until the warm mixing agent is uniform; and b) adding the aluminium hydroxide subjected to surface modification treatment, and stirring until the aluminium hydroxide is uniform, wherein the percentage of the asphalt is 95%-97%, and the percentage of the smoke suppressant is 3%-5%. According to the smoke suppressant disclosed by the invention, release of asphalt smoke in the construction process of a hot mix asphalt pavement can be obviously reduced, the mixing temperature of the smoke suppressant is low, the construction and ecological environments are greatly improved, the physical health of constructors is protected, the smoke suppressant has significant social benefits and environmental protection benefits, meanwhile, energy conservation can also be achieved, asphalt ageing is relieved, the pavement performances such as the integrality, the strength and the durability of the asphalt pavement are improved, and the smoke suppressant has obvious technical and economic benefits.

Description

technical field [0001] The invention relates to a smoke suppressant for hot-mix asphalt pavement, and also relates to a method for preparing smoke suppressant asphalt by using the smoke suppressant for asphalt pavement. Background technique [0002] Due to the advantages of comfortable driving, low noise, fast open traffic, and convenient maintenance, asphalt pavement is widely used in high-grade highways in my country. With the rapid development of my country's high-grade highway construction, the scale and quantity of asphalt pavement are expanding day by day. At present, the construction of asphalt pavement mainly adopts the hot mixing method, that is, firstly, the raw materials such as asphalt, sand aggregate, and mineral powder are preheated to a higher temperature (above 160°C) for mixing, and then the evenly mixed mixture is mixed at a certain temperature. paving and rolling at temperature. The hot mix method is characterized by using high temperature to reduce the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K9/06C08K3/22C09C1/40C09C3/04C09C3/08C09C3/12
Inventor 陈怡宏熊出华凌天清张意叶伟
Owner 重庆建工建筑产业技术研究院有限公司
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