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Ultraviolet aging-resistant modified asphalt mixture and preparation method thereof

A modified asphalt, UV-resistant technology, applied in the field of road asphalt pavement material preparation, can solve the problems of easy settlement, low apparent density, and influence on UV protection effect, etc.

Pending Publication Date: 2019-06-07
陶乐敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the magnesium-aluminum-based double hydroxide is an inorganic powder, on the one hand, the powdery magnesium-aluminum-based double hydroxide has a very small apparent density. It is difficult to form a uniform dispersion with SBS modified asphalt. On the other hand, the compatibility of inorganic magnesium-aluminum-based double hydroxides with SBS-modified asphalt is poor, and magnesium-aluminum-based double hydroxides are prone to occur in SBS modified asphalt. Subsidence, thus seriously affecting the UV protection effect of magnesium-aluminum-based layered double hydroxide on SBS modified asphalt

Method used

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  • Ultraviolet aging-resistant modified asphalt mixture and preparation method thereof

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Embodiment 1

[0050] A kind of anti-ultraviolet aging modified asphalt mixture, the anti-ultraviolet aging modified asphalt mixture is composed of the following raw materials in weight percentage: basalt coarse aggregate 50%, natural sand fine aggregate 35%, magmatic rock mineral powder 8% and UV aging-resistant modified asphalt 7%, of which, the basalt coarse aggregate with a particle size of 16-26.5mm is 18%, the basalt coarse aggregate with a particle size of 9.5-16mm is 18%, and the basalt coarse aggregate with a particle size of 4.75-9.5mm The basalt coarse aggregate is 14%, the basalt fine aggregate with a particle size of 2.36-4.75mm is 10%, and the basalt fine aggregate with a particle size of 0-2.36mm is 25%.

[0051] The anti-ultraviolet aging modified asphalt is composed of the following raw materials in weight percentage: 80% of asphalt, 10% of styrene-butadiene-styrene triblock copolymer, 8% of surface organically modified magnesium-aluminum layered double hydroxide, 0.1% of 2-...

Embodiment 2

[0062] A kind of anti-ultraviolet aging modified asphalt mixture, the anti-ultraviolet aging modified asphalt mixture is composed of the following raw materials in weight percentage: 55% of granite coarse aggregate, 28% of machine-made sand fine aggregate, 8% of slaked lime powder and UV aging modified asphalt 9%, of which, 20% of granite coarse aggregate with a particle size of 16-26.5mm, 20% of granite coarse aggregate with a particle size of 9.5-16mm, and 20% of granite with a particle size of 4.75-9.5mm The coarse aggregate is 15%, the machine-made sand fine aggregate with a particle size of 2.36-4.75mm is 6%, and the machine-made sand fine aggregate with a particle size of 0-2.36mm is 22%.

[0063] The anti-ultraviolet aging modified asphalt is composed of the following raw materials in weight percentage: asphalt 82%, styrene-butadiene-styrene triblock copolymer 8.98%, surface organically modified magnesium-aluminum layered double hydroxide 8%, 0.02% dibenzothiazole disul...

Embodiment 3

[0074] A modified asphalt mixture resistant to UV aging, which is composed of the following raw materials in weight percentage: 60% of diabase coarse aggregate, 30% of stone chip fine aggregate, and 5% of cement mineral powder and UV aging-resistant modified asphalt 5%, of which, the diabase coarse aggregate with a particle size of 16-26.5mm is 21.5%, the diabase coarse aggregate with a particle size of 9.5-16mm is 21.5%, and the particle size is The 4.75-9.5mm diabase coarse aggregate is 17%, the stone chip fine aggregate with a particle size of 2.36-4.75mm is 8%, and the stone chip fine aggregate with a particle size of 0-2.36mm is 22%.

[0075] The anti-ultraviolet aging modified asphalt is composed of the following raw materials in weight percentage: asphalt 85%, styrene-butadiene-styrene triblock copolymer 7.95%, surface organically modified magnesium-aluminum-based layered double hydroxide 5%, N-cyclohexyl-2-benzothiazole sulfenamide 0.05% and carbon disulfide 2%, wherei...

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Abstract

The invention discloses an ultraviolet aging-resistant modified asphalt mixture and a preparation method thereof. The ultraviolet aging resistant-modified asphalt mixture is prepared from the following raw materials: coarse aggregate, fine aggregate, mineral powder and ultraviolet aging-resistant modified asphalt. The ultraviolet aging-resistant modified asphalt is prepared from the following rawmaterials: asphalt, SBS, surface organic modified magnesium-aluminum-based layered double hydroxide, an accelerant and a compatilizer. The preparation method comprises the following steps: selecting coarse aggregate, fine aggregate and mineral powder to prepare the ultraviolet aging-resistant modified asphalt; preheating the ultraviolet aging resistant modified asphalt, the coarse aggregate, the fine aggregate and the mineral powder; weighing the coarse aggregate, the fine aggregate, the mineral powder and the ultraviolet aging-resistant modified asphalt, and mixing all the components to obtain the ultraviolet aging-resistant modified asphalt mixture. Experimental results show that the ultraviolet aging-resistant modified asphalt mixture prepared by the preparation method disclosed by theinvention has very good ultraviolet aging resistance.

Description

technical field [0001] The invention relates to the technical field of preparation of road asphalt pavement materials, in particular to an ultraviolet aging-resistant modified asphalt mixture and a preparation method thereof. Background technique [0002] With the continuous and rapid development of my country's economy, the traffic volume is increasing day by day, heavy and overloaded vehicles are very common, and road surface cracks, rutting and other diseases often appear, which put forward higher requirements for the high and low temperature performance of asphalt pavement. In order to prolong the service life of asphalt pavement, improve the service quality of the pavement, and reduce the maintenance cost, it is imperative to adopt effective modification and enhancement methods and means to improve the service quality of asphalt mixture. To solve this problem, polymers are usually used to modify asphalt to improve the road performance of asphalt mixture. Among them, sty...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B111/20
Inventor 陶乐敏
Owner 陶乐敏
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