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Warm-mixing SBS (styrene-butadiene-styrene) modified asphalt mixture and preparation method thereof

A technology of modified asphalt and mixture, which is applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., and can solve the problems affecting the health of construction workers, unfavorable compaction of SBS asphalt mixture, and SBS asphalt mixing Quick cooling of materials and other problems, to achieve the effect of convenient storage production, wide application range and prolonging the construction season

Inactive Publication Date: 2017-09-08
SHENZHEN OCEANPOWER NEW MATERIALS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the construction temperature of SBS modified asphalt mixture is high, the aggregate heating temperature is between 180°C and 190°C, and the discharge temperature is controlled between 175°C and 185°C. Due to the high construction temperature, a large amount of If it is constructed in the north, due to the large temperature difference with the outside world, the SBS asphalt mixture will cool down quickly, which is not conducive to the compaction of the SBS asphalt mixture.
[0003] In view of the fact that hot mix asphalt mixture not only consumes a lot of energy in the production process, but also emits a lot of exhaust gas and dust during the production and construction process, which seriously affects the surrounding environmental quality and the health of construction workers.

Method used

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  • Warm-mixing SBS (styrene-butadiene-styrene) modified asphalt mixture and preparation method thereof
  • Warm-mixing SBS (styrene-butadiene-styrene) modified asphalt mixture and preparation method thereof

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preparation example Construction

[0031] The present invention also provides a kind of preparation method of warm mix SBS modified asphalt mixture, comprises the following steps:

[0032] a. Heat the aggregate to 140°C-150°C and dry it, then add it to the mixing pot, keep the temperature in the stirring pot at 135°C-145°C, put the aggregate into the mixing pot and pre-mix for 30s;

[0033] b. Heat SBS modified asphalt to 155°C-170°C and add it to the mixing pot, add organic warm mixing agent, and stir in the mixing pot for 80s-100s;

[0034] c. Add mineral powder into the mixing pot and stir for 80s-100s;

[0035] d. Take the stirred mixture out of the pot at 120°C-145°C, and shape it at 115°C-140°C.

[0036] Wherein, in step c, the mixing time of the mineral powder is 90s.

Embodiment 1

[0042] Take 10600g of aggregate and heat it to 140°C for drying, add it to the mixing pot for pre-mixing for 30s, keep the temperature in the mixing pot at 135°C, take 498g of SBS modified asphalt and heat it to 166°C and add it to the mixing pot without adding EC-120 Warm mixing agent, stir in the mixing pot for 80s, add 212g of ore powder into the mixing pot, stir for 100s, take the mixed material out of the pot at 132°C, and shape it at 115°C to obtain warm-mix SBS modified permanent asphalt mixture.

Embodiment 2

[0044] Take 10680g of aggregate and heat it to 145°C for drying, add it to the mixing pot for pre-mixing for 30s, keep the temperature in the mixing pot at 129°C, take 502g of SBS modified asphalt and heat it to 161°C and add it to the mixing pot, put 10.0g of warm Sprinkle the agent on the surface of SBS modified asphalt, stir in the mixing pot for 89s, add 214g mineral powder into the mixing pot, and stir for 91s, take the mixed material out of the pot at 129°C, and shape it at 118°C. That is, warm mix SBS modified asphalt mixture is obtained.

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Abstract

The invention discloses a warm-mixing SBS (styrene-butadiene-styrene) modified asphalt mixture which comprises the following ingredients in parts by weight: 1 part of SBS modified asphalt, 11-36 parts of aggregate, 0.5-1.5 parts of mineral powder and 0.02-0.04 parts of an organic warm-mixing agent, wherein the organic warm-mixing agent is EC-120. Moreover, the invention discloses a preparation method of the warm-mixing SBS modified asphalt mixture. In the invention, on a basis of maintaining the basic performance of the asphalt mixture, the construction temperature is remarkably reduced, the construction peaceability is improved, the energy consumption in construction is reduced, the emission of harmful gas is reduced, and the destruction to the environment and the damage to the health of constructors are reduced.

Description

technical field [0001] The invention relates to the technical field of road engineering materials, in particular to a warm-mix SBS modified asphalt mixture and a preparation method thereof. Background technique [0002] In recent years, due to the continuous development of my country's transportation industry, the construction scale of highway asphalt pavement has gradually expanded, especially the mileage of high-grade highway construction has continued to increase, and the demand for high-quality highway asphalt is on the rise. At present, most of the crude oil in our country is paraffin-based crude oil. The asphalt produced is difficult to be used on high-grade highways due to its high wax content and poor durability. Factors such as the large temperature difference between north and south, winter and summer in my country put forward higher requirements for the quality of asphalt pavement, and it is difficult to meet the requirements with general traffic pavement asphalt. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/14C04B24/08
CPCC04B26/26C04B18/141C04B24/08Y02A30/30Y02W30/91
Inventor 陈栋陈宙翔高云龙张亮何子豪张琼之何唯平
Owner SHENZHEN OCEANPOWER NEW MATERIALS TECH
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